Reproduction and Wing Differentiation of Gynoparae Are Regulated by Juvenile Hormone Signaling in Aphis gossypii
文献类型： 外文期刊
作者： Wang, Liuyu 1 ; Lv, Jingli 1 ; Zhu, Xiangzhen 1 ; Zhang, Kaixin 1 ; Shi, Qingyu 1 ; Wang, Li 1 ; Ma, Weihua 2 ; Ji, Jichao 1 ; Luo, Junyu 1 ; Cui, Jinjie 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biobreeding & Integrated Util, Anyang 455000, Peoples R China
2.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Insect Resources Utilizat & Sustainable Pest, Wuhan 430070, Peoples R China
3.Zhengzhou Univ, Sch Agr Sci, State Key Lab Cotton Biobreeding & Integrated Util, Zhengzhou 450001, Peoples R China
4.Chinese Acad Agr Sci, Western Agr Res Ctr, Changji 831100, Peoples R China
5.Inst Cotton Res, Chinese Acad Agr Sci, Plant Protect Dept, 38 Huanghe Rd, Anyang 455000, Peoples R China
关键词：
期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 16 卷 6 期
页码：
收录情况： SCI
摘要： Gynopara is a specific winged type in the life history of Aphis gossypii. As a key reproduction mode between parthenogenesis and sexual reproduction, it lays sexual females in late autumn. However, little is known about gynoparae because of its rare presence in the wild and the lack of its detailed descriptions. In this study, we investigated the morphological characteristics, ovary maturation process, and key signaling pathways during the development of gynoparae of A. gossypii. With the extension of development stage, the gynoparae exhibited gradually enlarged and thickened abdomen, deepened color. Obviously differentiated wing primordia in the second instar nymphs. Two nested U-shaped zones containing a series of waxy secreta spots were present on the abdomen of the fourth instar nymphs, and these morphological characteristics could be used as important markers for identifying gynoparae. Temporal transcriptomic analysis suggested that juvenile hormone (JH) might be involved in regulating the development of gynoparae. After the application JH analog kinoprene to the first instar nymphs, almost all treated individuals failed to complete wing differentiation, and most lost the ability to produce progeny, suggesting the destructive effect of JH on wing differentiation and reproduction of gynoparae. Moreover, exogenous addition of kinoprene also significantly altered the expression levels of four key genes responsible for the synthesis and degradation of JH. Our findings reveal the mechanism by which JH regulated wing differentiation and reproductive capacity of gynoparae, which lay a foundation for the further research on reproduction mode switch in aphids in the future.
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