Induction of Nlvg and suppression of Nljhe gene expression in Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) adult females and males exposed to two insecticides

Ge, Lin-Quan; Wu, Jin-Cai; Zhao, Ke-Fei; Chen, Yao; Gao, Yang

doi:10.1016/j.pestbp.2010.06.018

Cited by 70 publications

(65 citation statements)

References 33 publications

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“…Work on individual genes and on global protein expression in insecticide- and jingGANGmycin-treated BPH34618 demonstrates the enhancing influence of agricultural chemicals on BHP reproduction and population changes. The influence of these chemicals operates through multiple systems, including carbohydrate transport19, protein biosynthesis18, developmental hormones18 and lipid biosynthesis20.…”

Section: Discussionmentioning

confidence: 99%

“…The influence of these chemicals operates through multiple systems, including carbohydrate transport19, protein biosynthesis18, developmental hormones18 and lipid biosynthesis20. Treating males with either of the insecticides, the organophosphate tzp or the pyrethroid, deltamethrin, led to increased protein contents in treated males and in untreated females after mating with treated males3.…”

Section: Discussionmentioning

confidence: 99%

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Suppressing male spermatogenesis-associated protein 5-like gene expression reduces vitellogenin gene expression and fecundity in Nilaparvata lugens Stål

Xia

Huang

et al. 2016

Sci Rep

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In our previous study with the brown planthopper (BPH), Nilaparvata lugens, triazophos (tzp) treatments led to substantial up-regulation of a male spermatogenesis-associated protein 5-like gene (NlSPATA5) compared to untreated controls. Mating with tzp-treated males significantly increased fecundity (as numbers of eggs laid), relative to females mated with untreated males. Because SPATA5 acts in mammalian sperm development and is expressed in testes, we posed the hypothesis that NlSPATA5 occurs in BPH seminal fluid and it operates in fecundity via mating. We tested the hypothesis by investigating the influence of suppressing NlSPATA5 expression in BPH males on fecundity. Reduced expression of NlSPATA5 led to decreased male accessory gland protein content and reproductive system development compared to controls. These changes in males led to prolonged pre-oviposition periods and decreased fecundity in females. For both genders, we recorded no difference in the body weight, oviposition periods, and longevity compared to controls. NlSPATA5 suppression in males also led to decreased fat body and ovarian protein content, yeast-like symbionts abundance and ovarian development as well as vitellogenin gene expression in their mating partners. We infer that increased NlSPATA5 expression may be one molecular mechanism of tzp-driven reproduction and population increases in BPH.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Suppressing male spermatogenesis-associated protein 5-like gene expression reduces vitellogenin gene expression and fecundity in Nilaparvata lugens Stål

Xia

Huang

et al. 2016

Sci Rep

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“…Few have considered biochemical, hormonal or molecular changes in insects during hormesis, although this is likely to change in the coming years (e.g. Ge et al 2010;Hu et al 2010;Yu et al 2010). (vii)With the exception of a few field and semi-field studies Lowery and Sears 1986b;Morse and Zareh 1991), almost all work documenting hormesis in insects has been done in the lab, despite important implications for insecticide-induced hormesis in the field.…”

Section: Evidence Of Hormesis In Insectsmentioning

confidence: 99%

Insects, Insecticides and Hormesis: Evidence and Considerations for Study

2012

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Insects are ubiquitous, crucial components of almost all terrestrial and fresh water ecosystems. In agricultural settings they are subjected to, intentionally or unintentionally, an array of synthetic pesticides and other chemical stressors. These ecological underpinnings, the amenability of insects to laboratory and field experiments, and our strong knowledgebase in insecticide toxicology, make the insect-insecticide model an excellent one to study many questions surrounding hormesis. Moreover, there is practical importance for agriculture with evidence of pest population growth being accelerated by insecticide hormesis. Nevertheless, insects have been underutilized in studies of hormesis. Where hormesis hypotheses have been tested, results clearly demonstrate stimulatory effects on multiple taxa as measured through several biological endpoints, both at individual and population levels. However, many basic questions are outstanding given the myriad of chemicals, responses, and ecological interactions that are likely to occur.

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“…Many of pesticides stimulate reproduction of BPH, of which organophosphates (triazophos) and pyrethroids (deltemethrin) are typically induced resurgent pesticides (Yin et al 2008;Azzam et al 2009;Ge et al 2010aGe et al , b, 2011Wang et al 2010). However, triazophos and deltemethrin not only stimulate fecundity but also stimulate reproduction of adult males (Ge et al 2010a, b;Wang et al 2010;Yu et al 2012).…”

Section: Effects Of Sublethal Dosementioning

confidence: 99%

Rice Planthoppers

2015

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Induction of Nlvg and suppression of Nljhe gene expression in Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) adult females and males exposed to two insecticides

Cited by 70 publications

References 33 publications

Suppressing male spermatogenesis-associated protein 5-like gene expression reduces vitellogenin gene expression and fecundity in Nilaparvata lugens Stål

Suppressing male spermatogenesis-associated protein 5-like gene expression reduces vitellogenin gene expression and fecundity in Nilaparvata lugens Stål

Insects, Insecticides and Hormesis: Evidence and Considerations for Study

Rice Planthoppers

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