Recent advances in molecular biology research of a rice pest, the brown planthopper

Bao, Yan-Yuan; Zhang, Chuan‐Xi

doi:10.1016/s2095-3119(17)61888-4

Cited by 38 publications

(44 citation statements)

References 134 publications

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“…The brown planthopper (BPH), Nilaparvata lugens Stål, is one of the typical monophagous pest herbivores of rice in Asia, which feeds on sap from rice plant phloem through its mouthpart and causes hopper burn when BPH population is high ( Cheng et al, 2013 ). The BPH harms rice plants by transmitting viruses, such as the rice ragged stunt virus and rice grassy stunt virus ( Bao and Zhang, 2019 ). Therefore, the BPH is one of the significant pests affecting rice production, and N. lugens outbreaks have led to huge rice yield losses since 1970s in many East and Southeast Asian countries ( Wu et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobials Affect the Fat Body Microbiome and Increase the Brown Planthopper Mortality

et al. 2021

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Symbionts in the abdomen fat body of brown planthopper (BPH) play an important role in the growth and reproduction of their host, Nilaparvata lugens Stål (Hemiptera: Delphacidae). Thus, controlling BPH infection on rice by inhibiting symbionts with antimicrobials is feasible. However, the effect of antimicrobials on the microbiome in the fat body and the relationship between microbial community and mortality have not been fully elucidated. A decrease in the total number of yeast-like symbiotes in the fat body and elevated mortality were observed after exposure to toyocamycin, tebuconazole, and zhongshengmycin. Additionally, we found that the antimicrobials reduced bacterial diversity and increased fungal diversity in the fat body and altered the bacterial and fungal community structure. Although the total absolute abundance of bacteria and fungi decreased after antimicrobial exposure, the absolute abundance of Serratia increased, indicating that Serratia, which was the most dominant in the fat body, is an important symbiont involved in resistance to antimicrobials. After antimicrobial exposure, seven genera, which probably participated in the nutrition and development function of the host, were totally eliminated from the fat body. Overall, our study enriches the knowledge of microbiomes in the fat body of BPH under antimicrobial treatment and the disturbance of symbionts would be further used to help other pesticides to control pests.

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Section: Introductionmentioning

confidence: 99%

Antimicrobials Affect the Fat Body Microbiome and Increase the Brown Planthopper Mortality

et al. 2021

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“…Insects 2020, 11, 642; doi:10.3390/insects11090642 www.mdpi.com/journal/insects China [1]. Nilaparvata lugens possess robust fecundity, enabling population densities to increase quickly in a favorable environment.…”

Section: Introductionmentioning

confidence: 99%

“…Nilaparvata lugens possess robust fecundity, enabling population densities to increase quickly in a favorable environment. Once an eruption of this insect pest occurs, little can be done to control the planthoppers [1]. The regulation mechanisms of insect reproduction have attracted great interest for decades.…”

Section: Introductionmentioning

confidence: 99%

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NADPH Oxidase 5 Is Essential for Molting and Oviposition in a Rice Planthopper Nilaparvata lugens

Peng

Dai

Yang

et al. 2020

Insects

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The brown planthopper Nilaparvata lugens is a typical monophagous insect herbivore that feeds exclusively on rice sap. This insect pest causes serious damage to rice crops throughout East Asian countries. Chemical control remains the first choice for managing N. lugens populations; however, the use of insecticides has given rise to planthopper resurgence and additional environmental risks. Nilaparvata lugens is a model insect of Hemiptera because its whole genome sequence has been elucidated and is susceptible to RNA interference. In this study, our findings revealed that a superoxide-generating gene, NADPH oxidase 5 (Nox5), is essential for molting and oviposition in a Hemipteran insect Nilaparvata lugens. Knockdown of Nox5 transcript levels by RNA interference in 2nd–5th-instar nymphs results in significantly lethal deficits in the molting transitions from nymph–nymph and nymph–adult. Nox5 knockdown leads to a reduction of hydrogen peroxide in female ovaries and failure of oviposition from the insect ovipositor into the rice leaf sheath. Here, we provide in vivo evidence demonstrating that Nox5 is a key enzyme for regulating molting and oviposition in this insect species.

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“…The r-strategic BPH is a migratory insect, has a short lifespan, and shows high fecundity with no parental care. In appropriate conditions, BPHs have the potential to achieve high population numbers and cause leaves to initially turn orange-yellow before they become brown and dry, a phenomenon called hopperburn that kills the plant (Bao and Zhang, 2019).…”

Section: Introductionmentioning

confidence: 99%

A Mucin-Like Protein Is Essential for Oviposition in Nilaparvata lugens

Lou

Shen

et al. 2019

Front. Physiol.

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Mucins play a variety of roles; for example, in vertebrates, mucins lubricate epithelial surfaces and protect tissue from physical and biological damage, however, knowledge of insect mucins is limited. Here, we identified an eggshell-related mucin-like protein, NlESMuc, in the brown planthopper (BPH), Nilaparvata lugens . NlESMuc was specifically expressed in the follicular cells from the egg chambers of the ovarioles. RNA interference (RNAi) was used to perform functional analysis of NlESMuc . Adult female BPH with NlESMuc knockdown had significantly reduced fecundity, including more difficult oviposition, lower egg production, and eggs that could not hatch. Scanning electron microscopy showed that, in NlESMuc knocked-down BPH, the ultrastructure of the eggshells of fully developed oocytes was loose, and the cross-section showed many small droplets of about 0.1-μm diameter. Based on the results, it is concluded that NlESMuc is an eggshell-related protein and essential for normal oviposition. Our findings help to provide new targets for pesticide design and RNAi-based BPH control and will also provide new insights into insect eggshells and insect mucins.

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Recent advances in molecular biology research of a rice pest, the brown planthopper

Cited by 38 publications

References 134 publications

Antimicrobials Affect the Fat Body Microbiome and Increase the Brown Planthopper Mortality

Antimicrobials Affect the Fat Body Microbiome and Increase the Brown Planthopper Mortality

NADPH Oxidase 5 Is Essential for Molting and Oviposition in a Rice Planthopper Nilaparvata lugens

A Mucin-Like Protein Is Essential for Oviposition in Nilaparvata lugens

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