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1. Diversification patterns of the grasshopper genus Zoniopoda Stål (Romaleidae, Acridoidea, Orthoptera) in open vegetation biomes of South America. [2018]

  • POCCO, M. A. R. T. I. N. A. E., GUZMÁN, N. O. E. L. I. A., PLISCHUK, S. A. N. T. I. A. G. O., CONFALONIERI, V. I. V. I. A. N. A., LANGE, C. A. R. L. O. S. E., and CIGLIANO, MARÍA M. A. R. T. A.
  • Systematic Entomology. Apr2018, Vol. 43 Issue 2, p290-307. 18p.
Subjects
BIODIVERSITY, GRASSHOPPER behavior, BIOMES, PHYLOGENY, and SPECIES distribution
Abstract
Abstract: The open vegetation biomes, within the limits of the Chacoan subregion, occur along a diagonal in eastern South America covering a large range of environmental conditions. In order to contribute to the knowledge on the biodiversity of these open biomes, we analysed the phylogenetic relationships of the grasshopper genus Zoniopoda to the remaining South American Romaleinae, and examined the biogeographical patterns of diversification of the genus. The study is based on morphological and molecular (COI and H3) evidence, including 12 species of Zoniopoda and 17 species of four tribes of South American Romaleinae. We describe a new species of Zoniopoda, and test its taxonomic placement within the group. Results of our phylogenetic analyses recovered Zoniopoda as a monophyletic group with high support values. According to the dispersion–vicariance analysis, the ancestor of Zoniopoda may have been distributed in an area corresponding to the Chacoan and Cerrado provinces. A vicariant event, that could be explained by the uplift of the Brazilian Plateau and the subsidence of the Chaco, is hypothesized to have occurred splitting the ancestral distribution of Zoniopoda, resulting in the independent evolution of the Tarsata group within the Cerrado and the Iheringi group in the Chacoan subregion. This published work has been registered in ZooBank, http://zoobank.org/urn:lsid:zoobank.org:act:FCFB4C5D-1741-46F1-8E25-B37ED2B9D872. [ABSTRACT FROM AUTHOR]

2. HNF1B deletions in patients with young-onset diabetes but no known renal disease. [2013]

  • Edghill, E. L., Stals, K., Oram, R. A., Shepherd, M. H., Hattersley, A. T., and Ellard, S.
  • Diabetic Medicine. Jan2013, Vol. 30 Issue 1, p114-117. 4p. 1 Diagram.
Subjects
DIAGNOSIS of diabetes, KIDNEY disease diagnosis, LIVER, GENETIC polymorphisms, GENETICS, GENETIC mutation, and ANATOMY
Abstract
Diabet. Med. 30, 114-117 (2013) Abstract Aims Hepatocyte nuclear factor 1β ( HNF1B) mutations cause a syndrome of renal cysts and diabetes, with whole gene deletions accounting for approximately 50% of cases. The severity of the renal phenotype is variable, from enlarged cystic kidneys incompatible with life to normal renal development and function. We investigated the prevalence of HNF1B deletions in patients with diabetes but no known renal disease. Methods We tested 461 patients with familial diabetes diagnosed before 45 years, including 258 probands who met clinical criteria for maturity-onset diabetes of the young (two generations affected and at least one family member diagnosed under 25 years). A fluorescent polymerase chain reaction assay was used to analyse two intragenic polymorphic HNF1B markers and identify heterozygous patients who therefore did not have whole gene deletions. Those patients homozygous for both markers were then tested for an HNF1B deletion using multiplex ligation-dependent probe amplification. Results Heterozygous HNF1B intragenic polymorphisms were identified in 337/461 subjects. Multiplex ligation-dependent probe amplification analysis showed an HNF1B gene deletion in three of the remaining 124 probands, all of whom met the criteria for maturity-onset diabetes of the young. Testing of their relatives identified three additional deletion carriers and ultrasound scanning showed renal developmental abnormalities in three of these six patients. Conclusions We estimate that HNF1B mutations account for < 1% of cases of maturity-onset diabetes of the young. Although HNF1B mutations are a rare cause of diabetes in the absence of known renal disease, a genetic diagnosis of renal cysts and diabetes syndrome is important as it raises the possibility of subclinical renal disease and the 50% risk of renal cysts and diabetes syndrome in the patient's offspring. [ABSTRACT FROM AUTHOR]

3. High-throughput determination of malondialdehyde in plant tissues [2005]

  • Davey, M.W., Stals, E., Panis, B., Keulemans, J., and Swennen, R.L.
  • Analytical Biochemistry. Dec2005, Vol. 347 Issue 2, p201-207. 7p.
Subjects
MALONDIALDEHYDE, PEROXIDATION, CRYOBIOLOGY, and ALCOHOLS (Chemical class)
Abstract
Abstract: Malondialdehyde (MDA) is a widely used marker of oxidative lipid injury whose concentration varies in response to biotic and abiotic stress. Commonly, MDA is quantified as a strong light-absorbing and fluorescing adduct following reaction with thiobarbituric acid (TBA). However, plant tissues in particular contain many compounds that potentially interfere with this reaction and whose concentrations also vary according to the tissue type and stress conditions. As part of our studies into the stress responses of plant tissues, we were interested in developing a rapid, accurate, and robust protocol for MDA analysis using reverse-phased HPLC to avoid these problems with reaction specificity. We demonstrate that a partitioning step into n-butanol during sample preparation is essential and that gradient HPLC analysis is necessary to prevent sample carryover between injections. Furthermore, the starting composition of the mobile phase must be sufficiently hydrophobic to allow direct injection of the n-butanol extracts without peak splitting, tailing, and other artifacts. To minimize analysis times, we used a short, so-called “Rocket” HPLC column and high flow rates. The optimized HPLC separation has a turnaround time of 2.5min per sample. Butanolic extracts of MDA(TBA)2 were stable for at least 48h, and recoveries were linear between 0.38 and 7.5pmol MDA added. Importantly, this procedure proved to be compatible with existing extraction procedures for l-ascorbate and glutathione analysis in different plant species, allowing multiple “stress metabolite” analyses to be carried out on a single tissue extract. [Copyright &y& Elsevier]

4. Development and Life History of Zelus tetracanthus Stål: A Potential Predator of Diorhabda spp. in Tamarix spp. L.. [2020]

  • Ferguson, M. E., Berro, A. M., Lindenmayer, J. C., Singleton, C., and Royer, T. A.
  • Southwestern Entomologist. Mar2020, Vol. 45 Issue 1, p17-30. 14p.
Subjects
TAMARISKS, ASSASSIN bugs, LIFE history theory, PREDATORY animals, BODY size, and NATURAL history
Abstract
The harpactorine assassin bug, Zelus tetracanthus (Stål) (Hemiptera: Reduviidae), is an insect predator frequently found in surveys of saltcedar (Tamarix spp.) in Oklahoma. Previous studies in a laboratory showed it could prey on Diorhabda carinulata (Desbrochers) (Coleoptera: Chrysomelidae), a recently introduced biological control agent for Tamarix. An F2 cohort of Z. tetracanthus was reared from egg to adult to measure stage-specific development rates and describe immature stages at 22 ± 1.0°C and 16:8 light:dark hours. The mean times for development of the five instars were 6.96 ± 0.13, 5.18 ± 0.13, 6.94 ± 0.29, 10.92 ± 0.43, and 17.93 ± 0.76 days, respectively. Several anatomical characters to distinguish instars, including body size, body color, and select morphological characters were described. Data from museum collections of Z. tetracanthus suggested the insect has a univoltine life cycle. The development data contrast with a previous description of Z. socius (= Z. tetracanthus) and illustrate the need to further study the variable morphology, natural history, and genetic makeup of the species. [ABSTRACT FROM AUTHOR]

5. Potential of Melia azedarach L. (Meliaceae) as a Host Plant for Halyomorpha halys (Stål) (Hemiptera: Pentatomidae). [2019]

  • Tillman, P. Glynn, Cottrell, Ted E., and Buntin, G. David
  • Florida Entomologist. Apr2019, Vol. 102 Issue 1, p222-226. 5p.
Subjects
MELIACEAE, HOST plants, HEMIPTERA, STINKBUGS, and INSECT antifeedants
Abstract
Currently, the invasive brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), is considered an agricultural and nuisance pest in Georgia. The invasive chinaberry tree, Melia azedarach L. (Meliaceae), commonly grows in dense thickets along roadsides, and in woodlands adjacent to agricultural crops across the southeastern USA. Thus, the objective of this study was to determine the potential of M. azedarach to serve as a host plant of H. halys by examining mortality and feeding of first and second instars on M. azedarach leaves vs. carrot (i.e., a control diet), and documenting presence of H. halys on M. azedarach in woodlands at 2 locations in Georgia where this stink bug has become established. Over all sampling dates and locations, the number of H. halys in chinaberry was very low (0.1 per tree), and only 3 late instars and 1 adult were observed feeding on M. azedarach at 1 field site late in the season. Percentage feeding by second instars of H. halys was lower for individuals given M. azedarach leaves vs. those provided with carrot, most likely indicating that compounds in M. azedarach have an antifeeding effect. In fact, mortality for second instars on M. azedarach leaves was very high, and thus we conclude that M. azedarach is an unsuitable host plant for H. halys. [ABSTRACT FROM AUTHOR]

6. Studies on probing stimulants for the green rice leafhopper, Nephotettix nigropictus (Stål) (Hemiptera: Cicadellidae), in the rice plant (Oryza sativa L.). [2016]

  • Zhi-Hui ZHAN, Akane MATSUO, and Chul-Sa KIM
  • Journal of Pesticide Science. 2016, Vol. 41 Issue 4, p163-166. 4p. 5 Black and White Photographs, 1 Graph.
Subjects
STIMULANTS, LEAFHOPPERS, RICE diseases & pests, BIOLOGICAL assay, and METHANOL
Abstract
A crude rice extract caused a higher probing response than did the control in the green rice leafhopper, Nephotettix nigropictus. Bioassay-guided separation led to the isolation of four active compounds, isoscoparin 2"-O-glucoside, isoscoparin 2"-O-(6"'-(E)-feruloyl)glucoside, isoscoparin 2"-O-(6"'-(E)-p-coumaroyl)glucoside, and isovitexin 2"-O-(6"'- (E)-feruloyl)glucoside from ODS 40% methanol in water faction. Each of the compounds, or any combination without one of the four compounds, caused weaker probing responses than the crude rice extract. The activity was recovered only when all the compounds were combined. [ABSTRACT FROM AUTHOR]

7. Identification of a novel locus, BPH38(t), conferring resistance to brown planthopper (Nilaparvata lugens Stal.) using early backcross population in rice (Oryza sativa L.). [2019]

  • Balachiranjeevi, C. H., Prahalada, G. D., Mahender, A., Jamaloddin, Md., Sevilla, M. A. L., Marfori-Nazarea, C. M., Vinarao, R., Sushanto, U., Baehaki, S. E., Li, Z. K., and Ali, J.
  • Euphytica. 2019, p1-14. 14p.
Subjects
NILAPARVATA lugens, SINGLE nucleotide polymorphisms, LOCUS (Genetics), GENOTYPES, INSECT pests, and RICE
Abstract
Rice is the most important staple food crop, and it feeds more than half of the world population. Brown planthopper (BPH) is a major insect pest of rice that causes 20–80% yield loss through direct and indirect damage. The identification and use of BPH resistance genes can efficiently manage BPH. A molecular marker-based genetic analysis of BPH resistance was carried out using 101 BC1F5 mapping population derived from a cross between a BPH-resistant indica variety Khazar and an elite BPH-susceptible line Huang–Huan–Zhan. The genetic analysis indicated the existence of Mendelian segregation for BPH resistance. A total of 702 high-quality polymorphic single nucleotide polymorphism (SNP) markers, genotypic data, and precisely estimated BPH scores were used for molecular mapping, which resulted in the identification of the BPH38(t) locus on the long arm of chromosome 1 between SNP markers 693,369 and id 10,112,165 of 496.2 kb in size with LOD of 20.53 and phenotypic variation explained of 35.91%. A total of 71 candidate genes were predicted in the detected locus. Among these candidate genes, LOC_Os01g37260 was found to belong to the FBXL class of F-box protein possessing the LRR domain, which is reported to be involved in biotic stress resistance. Furthermore, background analysis and phenotypic selection resulted in the identification of introgression lines (ILs) possessing at least 90% recurrent parent genome recovery and showing superior performance for several agro-morphological traits. The BPH resistance locus and ILs identified in the present study will be useful in marker-assisted BPH resistance breeding programs. [ABSTRACT FROM AUTHOR]

8. Inventory of some families of Hemiptera, Coleoptera (Curculionidae) and Hymenoptera associated with horticultural production of the Alto Valle de Río Negro and Neuquén provinces (Argentina). [2021]

  • ÁLVAREZ, Leopoldo J., BERNARDIS, Adela M., DEFEA, Bárbara S., DELLAPÉ, Pablo M., DEL RÍO, María G., GITTINS LÓPEZ, Cecilia G., LANTERI, Analía A., LÓPEZ ARMENGOL, María F., MARINO DE REMES LENICOV, Ana M., MINGHETTI, Eugenia, PARADELL, Susana L., and RIZZO, María E.
  • Revista de la Sociedad Entomológica Argentina. 2021, Vol. 80 Issue 1, p48-69. 22p.
Subjects
HYMENOPTERA, CURCULIONIDAE, HOMOPTERA, PEST control, INSECT collection & preservation, BEETLES, and HEMIPTERA
Abstract
The knowledge of the entomological fauna in productive systems is important for the agroecological management since beneficial insects are a key resource for pest management in horticultural systems. Scientific information on the biodiversity present in a given area is essential as well as the ecological function and/or feeding habits of the insects. In Alto Valle de Río Negro and Neuquén, horticultural production systems can be described as highly dependent on chemical inputs for pest management and fertilization. The aim of this study is to carry out an inventory of the biodiversity of some families of Hemiptera, Coleoptera (Curculionidae) and Hymenoptera present in peri-urban and rural farms located in Neuquén and Río Negro, respectively. Insects were collected through pitfall and sweeping net on tomato and pepper crops and the surrounding non-cultivated areas. Idiosystatus Berg (Auchenorrhyncha) was cited for the first time from Argentina. Species cited for the first time from Neuquén: Hemiptera: Auchenorrhyncha: Acanalonia chloris (Berg), Syncharina punctatissima (Signoret), Amplicephalus dubius Linnavuori, Exitianus obscurinervis (Stål), Agalliana ensigera Oman and Bergallia signata (Stål); Hemiptera: Heteroptera: Harmostes (Harmostes) prolixus Stål and Atrachelus (Atrachelus) cinereus (Fabricius); Coleoptera: Curculionidae: Hypurus bertrandi (Perris), Naupactus leucoloma Boheman, Otiorhynchus rugosostriatus (Goeze) and Sitona discoideus Gyllenhal and Hymenoptera: Xylocopa (Neoxylocopa) augusti Lepeletier and Pseudagapostemon (Neagapostemon) singularis Jörgensen. Species cited for the first time from Río Negro: Hemiptera: Auchenorrhyncha: Amplicephalus dubius Linnavuori, Amplicephalus marginellanus Linnavuori, Circulifer tenellus (Baker) and Xerophloea viridis (Fabricius); Hemiptera: Heteroptera: Tupiocoris cucurbitaceus (Spinola), Atrachelus (Atrachelus) cinereus (Fabricius), Dichelops furcatus (Fabricius) and Harmostes (Harmostes) prolixus Stål; Coleptera: Curculionidae: Naupactus xanthographus (Germar) and Hymenoptera: Diadasia pereyrae (Holmberg) and Dialictus autranellus (Vachal). [ABSTRACT FROM AUTHOR]

9. Desempeño biológico y reproductivo de Oebalus insularis Stal (Hemiptera: Pentatomidae) en diferentes plantas hospedantes. [2014]

  • Zachrisson, Bruno, Polanco, Pamela, and Martínez, Onesio
  • Revista de Proteccion Vegetal. 2014, Vol. 29 Issue 2, p77-81. 5p.
Subjects
HEMIPTERA, HOST plants, RICE diseases & pests, ECHINOCHLOA, and REPRODUCTION
Abstract
Obtaining eggs of Oebalus insularis Stal., for the multiplication of Telenomus podisi Ashmead depends on the quality of the food provided by diverse host plants. Therefore, the biological and reproductive performance of O. insularis on Oryza sativa L. and Echinochloa colona (L.) was determined at 28±2°C, 80 ± 5% of relative humidity and 12 hours photophase. The duration of the period of nymph eclosion until the emergence of the adult of O. insularis varied between 20,9 and 21,2 days, for O. sativa and E. colona, respectively. The longevity of the female and male of O. insularis was statistically similar on both host plants. The female longevity was higher than that shown by the male, varying between 15 and 12 days, respectively. The O. insularis female fed with E. colona presented a high number of eggs per batch, total number of eggs per female and the eclosion rate of nymphs was higher. The biological and reproductive parameters of this insect confirmed their adaptation to the alternative host E. colona, optimizing the production of eggs subjected to T. podisi parasitism. [ABSTRACT FROM AUTHOR]

10. Survey of Florida Olive Groves during Olive Fruit Development: Monitoring for Stink Bugs and Olive Fruit Flies. [2021]

  • Phillips, Eleanor F., Allan, Sandra A., and Gillett-Kaufman, Jennifer L.
  • Florida Entomologist. Dec2021, Vol. 104 Issue 4, p265-273. 9p.
Subjects
STINKBUGS, OLIVE fly, OLIVE, FRUIT development, BROWN marmorated stink bug, INTRODUCED organisms, and LEAFHOPPERS
Abstract
Olives, Olea europaea L. (Oleaceae), are an emerging commercial crop in Florida; however, potential arthropod threats during olive tree establishment and fruit development remain uncharacterized. Two potential pests that may threaten olive fruit production directly are native and invasive pentatomid stink bugs, which are important pest species of many crops in the southeast, and the invasive olive fruit fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae),which is not known to be established in Florida. Monitoring for stink bugs during fruit maturation was done using dual funnel tube traps baited with stink bug lures. Yellow sticky card traps baited with food and pheromone lures were used to monitor for the olive fruit fly. Both trap types were placed in tree canopies in 4 North Central Florida olive groves during the anticipated fruit development period for 2 growing seasons. Whereas neither of the invasive species targeted (Halyomorpha halys Stål [Hemiptera: Pentatomidae] or B. oleae) were detected, several other potential pests were identified including brown stink bugs (Euschistus spp.; Hemiptera: Pentatomidae), glassy winged sharpshooters, Homalodisca vitripennis Germar (Hemiptera: Cicadellidae), and grasshoppers. No fruit damage attributable to arthropod pests was detected although fruit production was very low with limited samples. These results contribute to awareness of potential pests that may jeopardize olive fruit production and aid in the future studies to develop effective monitoring activities for Florida growers. [ABSTRACT FROM AUTHOR]

11. Lantana camara L. and its biocontrol agent, Teleonemia scrupulosa Stål, in Botswana. [2015]

  • Assefa, Yoseph, Tiroesele, Bamphitlhi, Segwagwe, Amogelang, and Madisa, Mogapi E.
  • African Journal of Ecology. Sep2015, Vol. 53 Issue 3, p381-384. 4p.
Subjects
LANTANA camara, ORNAMENTAL plants, BIOSAFETY, QUARANTINE, ECOSYSTEM dynamics, NATURALIZATION, and WEEDS
Abstract
The article presents a research focused on analyzing the status of ornamental plant lantana camara that grows in the urban areas and also discusses its implication on the biosafety and quarantine of the region. Various topics discussed in the research includes natural enemies of lantana, natural ecosystem of Botswana and impact of naturalization on weed removal.

12. INSECTOS PERJUDICIALES Y BENÉFICOS EN CULTIVO DE CÁRTAMO EN LA REGIÓN PAMPEANA SEMIÁRIDA. [2018]

  • Florencia, Fritz, Ramonda, Fernando, and Baudino, Estela M.
  • Semiárida. Revista de la Facultad de Agronomía UNLPam. 2018, Vol. 28 Issue 2, p35-44. 10p.
Abstract
The work's aims were to identify both harmful and helpful insect species for safflower crop and to study their distribution along time in relation to plant phenological state. The insect species identified as harmful were: Uroleucon jaceae L., Capitophorus elaeagni, Frankliniella occidentalis P., Dichelops furcatus (F.), Athaumasthus haematicus (Stál), Nezara viridula (L.), Nysius simulans Stál, Edessa meditabunda (F.), Piezodorus guildinii (W.), Helicoverpa zea B., Epicauta adspersa K., Spodoptera frugiperda (J. E. Smith), Chauliognathus scriptus (Germ.), Pantomorus auripes H. and Rachiplusia nu (G.). Regarding aphids, their highest density was observed at the beginning of November, when crop was in the state of branching, with invasion mainly of the upper third of plants: leaves, young shoots and flower heads. Among all harmful true bugs found in the crop, red bug - Athaumastus haematicus (Stál)- comprised the highest proportion and was detected before aphids attacks, when stem elongation of plants was just beginning. As for beneficial species, the six insects detected in sufflower crop were Hippodamia convergens G., Eriopis connexa G., Harmonia axyridis (P.), Nabis sp., Ophion sp. and Apis melifera L., besides various spider species. The coccinellids- Hippodamia convergens; Eriopis connexa and Harmonia axydiris performed as the main natural control agents at crop. KE [ABSTRACT FROM AUTHOR]

13. Population growth parameters of three Neotropical mirid predators (Hemiptera: Miridae) at five temperatures on tobacco with Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) eggs as food. [2018]

  • BUENO, V. H. P., CALIXTO, A. M., MONTES, F. C., and VAN LENTEREN, J. C.
  • Israel Journal of Entomology. 2018, Vol. 48 Issue 2, p1-22. 22p.
Subjects
MIRIDAE, EGGS as food, PREDATORY animals, TEMPERATURE effect, and MEDITERRANEAN flour moth
Abstract
Three Neotropical predators Campyloneuropsis infumatus (Carvalho), Engytatus varians (Distant) and Macrolophus basicornis (Stål) (Hemiptera: Miridae) are considered in Brazil as potential biological control agents of Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) and other tomato pests. This study evaluated the effect of five constant temperatures (16, 20, 24, 28 and 32°C, all ±1°C) on the reproduction, population growth and longevity of these predatory mirids. Adults freshly emerged from nymphs reared at each temperature, were separated in couples and kept in 1.7 l glass pots with tobacco plant seedlings (Nicotiana tabacum L., cv. TNN) as oviposition substrate and ad libitum Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) eggs as food. The shortest pre-oviposition and the longest oviposition periods were observed at 24°C and 28°C in all three mirid species. At 24°C all three species showed the highest daily and total fecundities. The population growth parameters represented by the intrinsic rate of increase (rm) and the finite rate of increase (λ) were highest at 24°C and 28°C, and the net reproductive rate (R0) was highest at 24°C for all three species. Longevities of both males and females were longest at 24°C and 28°C in all three mirids. The size of tibia and adult weight in the three species were greatest at 20°C and 28°C, respectively. Differences in values for all above variables were small and often statistically non-significant for the three mirid species at the same temperature. Also, not a single significant difference was found for any of the growth parameters at each of the temperatures, including rm. The results indicate that temperatures in the range from 24-28°C are best for reproduction and population growth of C. infumatus, E. varians and M. basicornis. The factitious prey E. kuehniella is an excellent food source and tobacco plants provide a good rearing substrate for these mirids. The obtained results may assist in developing a mass rearing method for C. infumatus, E. varians and M. basicornis, in determining optimal timing and frequency of mirid releases in the crop, and in determining whether they are active at the temperature spectrum observed during tomato production in the field or greenhouse. [ABSTRACT FROM AUTHOR]

14. New records and update on the geographic distribution of fifteen species of Lincus Stål, 1867 (Insecta: Hemiptera: Pentatomidae) associated with palms and coconut trees in the Neotropics. [2017]

  • Roell, Talita, Winter, Ingrid C., Asipuela, René, and Campos, Luiz A.
  • Check List. 2017, Vol. 13 Issue 2, p1-9. 9p.
Subjects
HEMIPTERA and STINKBUGS
Abstract
The Neotropical genus Lincus Stål, 1867 is frequently associated with the transmission of diseases to palms and coconut trees (Elaeis guineensis and Cocos nucifera) in commercial plantations in South America. Here we update the geographical distribution of 15 species of Lincus collected in E. guineensis and C. nucifera in the Neotropics. The geographical range of five species is expanded with new countries recorded for L. malevolus and L. styliger, and detailed geographic information is given for the first time for L. lobuliger and L. securiger. [ABSTRACT FROM AUTHOR]

15. Role of hydroperoxide lyase in white-backed planthopper ( Sogatella furcifera Horváth)-induced resistance to bacterial blight in rice, Oryza sativa L. [2010]

  • Gomi, Kenji, Satoh, Masaru, Ozawa, Rika, Shinonaga, Yumi, Sanada, Sachiyo, Sasaki, Katsutomo, Matsumura, Masaya, Ohashi, Yuko, Kanno, Hiroo, Akimitsu, Kazuya, and Takabayashi, Junji
  • Plant Journal. Jan2010, Vol. 61 Issue 1, p46-57. 12p. 2 Color Photographs, 1 Black and White Photograph, 1 Chart, 4 Graphs.
Subjects
LYASES, PLANTHOPPERS, RICE, GENES, and XANTHOMONAS
Abstract
A pre-infestation of the white-backed planthopper (WBPH), Sogatella furcifera Horváth, conferred resistance to bacterial blight caused by Xanthomonas oryzae pv. oryzae ( Xoo) in rice ( Oryza sativa L.) under both laboratory and field conditions. The infestation of another planthopper species, the brown planthopper (BPH) Nilaparvata lugens Stål, did not significantly reduce the incidence of bacterial blight symptoms. A large-scale screening using a rice DNA microarray and quantitative RT-PCR revealed that WBPH infestation caused the upregulation of more defence-related genes than did BPH infestation. Hydroperoxide lyase 2 ( OsHPL2), an enzyme for producing C6 volatiles, was upregulated by WBPH infestation, but not by BPH infestation. One C6 volatile, ( E)-2-hexenal, accumulated in rice after WBPH infestation, but not after BPH infestation. A direct application of ( E)-2-hexenal to a liquid culture of Xoo inhibited the growth of the bacterium. Furthermore, a vapour treatment of rice plants with ( E)-2-hexenal induced resistance to bacterial blight. OsHPL2-overexpressing transgenic rice plants exhibited increased resistance to bacterial blight. Based on these data, we conclude that OsHPL2 and its derived ( E)-2-hexenal play some role in WBPH-induced resistance in rice. [ABSTRACT FROM AUTHOR]

16. Assessment of chemical resistance of wild and cultivated Vigna species to the brown pod-bugClavigralla tomentosicollis Stal (Hem., Coreidae). [2003]

  • Koona, P., Osisanya, E. O., Lajide, L., Jackai, L. E. N., and Tamo, M.
  • Journal of Applied Entomology. Jun2003, Vol. 127 Issue 5, p293. 6p.
Subjects
PLANT chemical defenses, VIGNA, and COREIDAE
Abstract
The effects of secondary metabolites in different Vigna species on the development of Clavigralla tomentosicollis were investigated in an artificial seed system using different fractions of crude pod extracts, while the orientation response of this pod-bug to volatile extracts was studied using a dual-choice olfactometer. Feeding on the neutral fraction extracts, in contrast to the basic and acidic fractions, resulted in significantly higher mortalities, longer total developmental time, and lower growth index of the insects in comparison with controls. All volatile extracts elicited an avoidance reaction by C. tomentosicollis, except the volatile from the susceptible genotype IT84S-2246 which generally attracted as many insects as controls. Extracts from wild Vigna species showed higher activity than those from their cultivated relatives. The present study which has established that most secondary metabolites in cowpea pods were localized in the neutral fraction of the crude extract, could facilitate experiments on the separation and characterization of the toxic factors involved. [ABSTRACT FROM AUTHOR]

17. High-throughput determination of malondialdehyde in plant tissues [2005]

  • Davey, M.W., Stals, E., Panis, B., Keulemans, J., and Swennen, R.L.
Subjects
Cell Biology, Molecular Biology, Biochemistry, Biophysics, Sample preparation, Malondialdehyde, chemistry.chemical_compound, chemistry, Chromatography, Lipid peroxidation, Butanol, Glutathione, High-performance liquid chromatography, Thiobarbituric acid, and Metabolite
Abstract
Malondialdehyde (MDA) is a widely used marker of oxidative lipid injury whose concentration varies in response to biotic and abiotic stress. Commonly, MDA is quantified as a strong light-absorbing and fluorescing adduct following reaction with thiobarbituric acid (TBA). However, plant tissues in particular contain many compounds that potentially interfere with this reaction and whose concentrations also vary according to the tissue type and stress conditions. As part of our studies into the stress responses of plant tissues, we were interested in developing a rapid, accurate, and robust protocol for MDA analysis using reverse-phased HPLC to avoid these problems with reaction specificity. We demonstrate that a partitioning step into n -butanol during sample preparation is essential and that gradient HPLC analysis is necessary to prevent sample carryover between injections. Furthermore, the starting composition of the mobile phase must be sufficiently hydrophobic to allow direct injection of the n -butanol extracts without peak splitting, tailing, and other artifacts. To minimize analysis times, we used a short, so-called “Rocket” HPLC column and high flow rates. The optimized HPLC separation has a turnaround time of 2.5 min per sample. Butanolic extracts of MDA(TBA) 2 were stable for at least 48 h, and recoveries were linear between 0.38 and 7.5 pmol MDA added. Importantly, this procedure proved to be compatible with existing extraction procedures for l -ascorbate and glutathione analysis in different plant species, allowing multiple “stress metabolite” analyses to be carried out on a single tissue extract.

18. Essential oils as spatial repellents for the brown marmorated stink bug, Halyomorpha halys ( Stål) ( Hemiptera: Pentatomidae). [2014]

  • Zhang, Q.‐H., Schneidmiller, R. G., Hoover, D. R., Zhou, G., Margaryan, A., and Bryant, P.
  • Journal of Applied Entomology. Aug2014, Vol. 138 Issue 7, p490-499. 10p.
Subjects
ESSENTIAL oils, REPELLENTS, STINKBUGS, HEMIPTERA, LEMONGRASS oil, SPEARMINT oil, and METHYL benzoate
Abstract
The brown marmorated stink bug ( BMSB), Halyomorpha halys ( Stål), native to Northeastern Asia, is a serious invasive pest in the United States, Canada, Switzerland, Germany and France. Several common essential oils and their compositions were tested against BMSBs as potential repellents. All the tested individual essential oils and a ternary oil blend showed significant repellency to both BMSB nymphs and adults. Clove oil, lemongrass oil, spearmint oil, ylang-ylang oil, and the ternary oil mixture (clove, lemongrass and spearmint) almost completely blocked attraction of BMSBs to the stink bug attractant-baited traps; whereas wintergreen oil, geranium oil, pennyroyal oil and rosemary oil resulted in 60-85% trap catch reductions. Over 20 BMSB antennally active compounds were identified from SPME headspace samples of the eight repellent essential oils using GC- EAD and GC- MS techniques. Among the synthetic EAD-active compounds tested in the field, eugenol, l-carvone, p/l-menthone, pulegone, methyl salicylate, trans/ cis-citral, methyl benzoate and β-caryophyllene significantly reduced trap catches of BMSBs by 72-99%; these compounds are likely responsible for the repellency of their corresponding essential oils. Surprisingly, a synthetic mixture of the predacious spined soldier bug ( SSB) [ Podisus maculiventris (Say)] aggregation pheromone ( trans-2-hexenal, α-terpineol and benzyl alcohol) also showed a significant inhibition of BMSB response to its attractants. These repellent essential oils and their active compounds, as well as the synthetic SSB pheromone, are potentially useful as part of an efficient, environmentally sound semiochemical-based IPM programme to combat this serious invasive stink bug. [ABSTRACT FROM AUTHOR]

19. Herbivory-induced plant volatiles from Oryza sativa and their influence on chemotaxis behaviour of Tibraca limbativentris stal. (Hemiptera: Pentatomidae) and egg parasitoids. [2014]

  • Melo Machado, R.C., Sant'Ana, J., Blassioli-Moraes, M.C., Laumann, R.A., and Borges, M.
  • Bulletin of Entomological Research. Jun2014, Vol. 104 Issue 3, p347-356. 10p.
Subjects
HEMIPTERA, ORYZA, PARASITOIDS, RICE, PLANTING, STINKBUGS, and PARASITES
Abstract
The rice stem bug, Tibraca limbativentris Stal. (Hemiptera: Pentatomidae) is one of the most important pests of rice crops, especially irrigated crops. Plant defence strategies against these bugs may involve the emission of chemical compounds, which are released following herbivore attacks, directly or indirectly harming pest performance. The aim of this study was to evaluate the influence of constitutive and herbivory-induced volatiles from rice plants (Oryza sativa L.) on the behavioural responses of T. limbativentris adults and egg parasitoids Trissolcus basalis (Wollaston) and Telenomus podisi (Ashmead) (Hymenoptera, Platygastridae). Plant volatiles were collected from undamaged plants of the rice cultivar IRGA 424 and from plants that suffered herbivory by five males or five females of T. limbativentris. Air-entrainment extracts were analysed by GC–flame ionization detector and GC–MS, and insect responses evaluated in a ‘Y’ olfactometer. T. limbativentris feeding damaged on rice plants induced the release of 16 volatiles compounds in a higher amounts compared to undamaged plants The main compounds induced were (E)-2-hexenal, (E)-2-octen-1-ol, methyl salicylate and α-muurolene. Female bugs were significantly attracted to air-entrainment extracts containing volatiles from undamaged plants compared with air-entrainment extracts containing volatiles emitted from plants damaged by T. limbativentris, whereas males showed no preference. Telenomus podisi females were significantly attracted to volatiles from air-entrainment extracts of plants damaged by females, whereas T. basalis showed no preference. These results suggest that rice plants may be emitting defence compounds, which could be avoided by T. limbativentris females and also acted indirectly by attracting natural enemies. [ABSTRACT FROM AUTHOR]

20. Brown marmorated stink bug, Halyomorpha halys (Stål), genome: putative underpinnings of polyphagy, insecticide resistance potential and biology of a top worldwide pest [2020]

  • Sparks, Michael E., Bansal, Raman, Benoit, Joshua B., Blackburn, Michael B., Chao, Hsu, Chen, Mengyao, Cheng, Sammy, Childers, Christopher, Dinh, Huyen, Doddapaneni, Harsha Vardhan, Dugan, Shannon, Elpidina, Elena N., Farrow, David W., Friedrich, Markus, Gibbs, Richard A., Hall, Brantley, Han, Yi, Hardy, Richard W., Holmes, Christopher J., Hughes, Daniel S. T., Ioannidis, Panagiotis, Cheatle Jarvela, Alys M., Johnston, J. Spencer, Jones, Jeffery W., Kronmiller, Brent A., Kung, Faith, Lee, Sandra L., Martynov, Alexander G., Masterson, Patrick, Maumus, Florian, Munoz-Torres, Monica, Murali, Shwetha C., Murphy, Terence D., Muzny, Donna M., Nelson, David R., Oppert, Brenda, Panfilio, Kristen A., Paula, Débora Pires, Pick, Leslie, Poelchau, Monica F., Qu, Jiaxin, Reding, Katie, Rhoades, Joshua H., Rhodes, Adelaide, Richards, Stephen, Richter, Rose, Robertson, Hugh M., Rosendale, Andrew J., Tu, Zhijian Jake, Velamuri, Arun S., Waterhouse, Robert M., Weirauch, Matthew T., Wells, Jackson T., Werren, John H., Worley, Kim C., Zdobnov, Evgeny M., Gundersen-Rindal, Dawn E., Biochemistry, Ioannidis, Panagiotis, Zdobnov, Evgeny, Department of Biochemistry and Molecular Biology [Houston, TX, USA], The University of Texas Medical School at Houston, Human Genome Sequencing Center [Houston] (HGSC), Baylor College of Medicine (BCM), Baylor University-Baylor University, Human Genome Sequencing Center, Baylor College of Medicine, Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité de Recherche Génomique Info (URGI), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Lawrence Berkeley National Laboratory [Berkeley] (LBNL), National Center for Biotechnology Information (NCBI), University of Tennessee, Department of Biology, Georgetown University, University of Illinois [Chicago] (UIC), University of Illinois System, Université de Lausanne (UNIL), Cincinnati Children's Hospital Medical Center, Department of Genetic Medicine and Development [Geneva], Université de Genève (UNIGE), Invasive Insect Biocontrol and Behavior Laboratory [Beltsville, USA], USDA Agricultural Research Service [Beltsville, Maryland], and USDA-ARS : Agricultural Research Service-USDA-ARS : Agricultural Research Service
  • BMC Genomics, Vol 21, Iss 1, Pp 1-26 (2020)
    BMC Genomics, Vol. 21, No 1 (2020) P. 227
    BMC Genomics
    BMC Genomics, vol. 21, no. 1, pp. 227
    BMC Genomics, 2020, 21 (1), ⟨10.1186/s12864-020-6510-7⟩
Subjects
Brown marmorated stink bug genome, Pentatomid genomics, polyphagy, chemoreceptors, odorant binding proteins, opsins, lcsh:Biotechnology, lcsh:TP248.13-248.65, lcsh:Genetics, lcsh:QH426-470, Genetics, Biotechnology, Genome, PEST analysis, Insect, media_common.quotation_subject, media_common, Ecology, Brown marmorated stink bug, biology.organism_classification, biology, Integrated pest management, Invasive species, Pesticide, Habitat, ddc:576.5, Research Article, cathepsins, xenobiotic detoxification, invasive species, QL, and [SDV.GEN]Life Sciences [q-bio]/Genetics
Abstract
Background Halyomorpha halys (Stål), the brown marmorated stink bug, is a highly invasive insect species due in part to its exceptionally high levels of polyphagy. This species is also a nuisance due to overwintering in human-made structures. It has caused significant agricultural losses in recent years along the Atlantic seaboard of North America and in continental Europe. Genomic resources will assist with determining the molecular basis for this species’ feeding and habitat traits, defining potential targets for pest management strategies. Results Analysis of the 1.15-Gb draft genome assembly has identified a wide variety of genetic elements underpinning the biological characteristics of this formidable pest species, encompassing the roles of sensory functions, digestion, immunity, detoxification and development, all of which likely support H. halys’ capacity for invasiveness. Many of the genes identified herein have potential for biomolecular pesticide applications. Conclusions Availability of the H. halys genome sequence will be useful for the development of environmentally friendly biomolecular pesticides to be applied in concert with more traditional, synthetic chemical-based controls.

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