数字农科院2.0

Identification and functional analysis of five genes that encode distinct isoforms of protein phosphatase 1 in Nilaparvata lugens

文献类型： 外文期刊

作者： Wang Weixia ; Tingheng Zhu *; Fengxiang Lai ; Pinjun Wan ; Qi Wei ; Qiang Fu *

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期刊名称： Scientific Reports

ISSN： 0068-1261

年卷期： 2020 年 10 卷 1 期

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摘要： Ten distinct cDNAs encoding five different protein phosphatases 1 (PPP1) were cloned from Nilaparvata lugens. NlPPP1 alpha and NlPPP1 beta are highly conserved whereas NlPPP1-Y, NlPPP1-Y1 and NlPPP1-Y2 are lowly conserved among insects. NlPPP1 alpha and NlPPP1 beta exhibited a ubiquitous expression, while NlPPP1-Y, NlPPP1-Y1, and NlPPP1-Y2 were obviously detected from the 4th instar nymph to imago developmental stages in males, especially detected in internal reproductive organ and fat bodies of the male. Injection nymphs with dsRNA of NlPPP1 alpha or NlPPP1 beta was able to reduce the target gene expression in a range of 71.5-91.0%, inducing a maximum mortality rate of 95.2% or 97.2% at 10th day after injection and eclosion ratio down by 65.5-100.0%. Injection with dsNlPPP1Ys targeted to NlPPP1-Y, NlPPP1-Y1and NlPPP1-Y2 was able to induce a maximum mortality rate of 95.5% at 10th day after injection, eclosion ratio down by 86.4%. Knock-down one of the male-biased NlPPP1 genes has no effect on survival and eclosion ratio. Injection of 4th instar nymph with dsNlPPP1Ys led to reduced oviposition amount and hatchability, down by 44.7% and 19.6% respectively. Knock-down of NlPPP1-Y1 or NlPPP1-Y2 gene did not significantly affect oviposition amount but significantly affected hatchability. The results indicate that the male-biased NlPPP1 genes have overlapping functions in N. lugens development, and NlPPP1-Y1 and NlPPP1-Y2 may play important roles in spermatogenesis and fertilization. The dsNlPPP1 beta and dsNlPPP1Ys in this study could be the preferred sequence in RNAi and low-conserved male-biased NlPPP1 genes could be potential target for N. lugens control.

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