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Insights into wing dimorphism in worldwide agricultural pest and hostalternating aphid Aphis gossypii

Journal of Cotton Research 2021年第1期4卷 38-49页

作者： JI Jichao HUANGFU Ningbo LUO Junyu GAO Xueke NIU Lin ZHANG Shuai CUI Jinjie State Key Laboratory of Cotton Biology/Institute of Cotton Research(ICR) Chinese Academy of Agricultural Sciences(CAAS)Anyang 455000HenanChina Zhengzhou Research Base of ICR CAAS/State Key Laboratory of Cotton

Background:The worldwide pest Aphis gossypii has three-winged morphs in its life cycle,namely,winged parthenogenetic female(WPF),winged gynopara(GP),and winged male,which are all produced by a wingless parthenogenetic female(WLPF).Most studies on *** have focused on WPF,while few have investigated GP and *** shared molecular mechanism underlying the wing differentiation in the three wing morphs of *** remains *** wing differentiation of WPF was explored in a previous ***,GP and male were induced *** characters of the body,internal genitals,wing veins,and fecundity of GP and male were compared with those of WPF or *** with WLPF,the shared and separate differentially expressed genes(DEGs)were identified in these three-wing ***:Newly-born nymphs reared in short photoperiod condition(8 L:16D,18°C)exclusively produced gynoparae(GPe)and males in adulthood successively,in which the sex ratio was GP biased.A total of 14 GPe and 9 males were produced by one mother *** with WLPF,the three-wing morphs exhibited similar morphology and wing vein patterns but were obviously discriminated in the length of fore-and underwings,reproductive system,and fecundity.A total of 37090 annotated unigenes were obtained from libraries constructed using the four morphs via RNA sequencing(RNA-Seq).In addition,10867 and 19334 DEGs were identified in the pairwise comparison of GP versus WLPF and male versus WLPF,*** with WLPF,the winged morphs demonstrated 2335 shared DEGs(1658 upregulated and 677 downregulated).The 1658 shared upregulated DEGs were enriched in multiple signaling pathways,including insulin,FoxO,MAPK,starch and sucrose metabolism,fatty acid biosynthesis,and degradation,suggesting their key roles in the regulation of wing plasticity in the cotton ***-four genes that spanned the range of differential expression were chosen to validate statistical analysis based on RNA-Seq through the

关键词： Cotton aphid Wing differentiation Wing plasticity winged parthenogenetic female Gynopara Male

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