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A Horizontally Transferred Plant Fatty Acid Desaturase Gene Steers Whitefly Reproduction

文献类型： 外文期刊

作者： Gong, Cheng 1 ; Guo, Zhaojiang 1 ; Hu, Yuan 1 ; Yang, Zezhong 1 ; Xia, Jixing 1 ; Yang, Xin 1 ; Xie, Wen 1 ; Wang, Shaoli 1 ; Wu, Qingjun 1 ; Ye, Wenfeng 3 ; Zhou, Xuguo 4 ; Turlings, Ted C. J. 3 ; Zhang, Youjun 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Dept Plant Protect, State Key Lab Vegetable Biobreeding, Beijing 100081, Peoples R China

2.Tianjin Acad Agr Sci, Inst Plant Protect, Tianjin 300381, Peoples R China

3.Univ Neuchatel, Inst Biol, Lab Fundamental & Appl Res Chem Ecol, CH-2000 Neuchatel, Switzerland

4.Univ Kentucky, Dept Entomol, Lexington, KY 40546 USA

关键词： Delta 12 desaturase; Bemisia tabaci; horizontal gene transfer; polyunsaturated fatty acids; reproduction

期刊名称：ADVANCED SCIENCE （ 影响因子：15.1； 五年影响因子：16.7 ）

ISSN：

年卷期： 2024 年 11 卷 10 期

页码：

收录情况： SCI

摘要： Polyunsaturated fatty acids (PUFAs) are essential nutrients for all living organisms. PUFA synthesis is mediated by Delta 12 desaturases in plants and microorganisms, whereas animals usually obtain PUFAs through their diet. The whitefly Bemisia tabaci is an extremely polyphagous agricultural pest that feeds on phloem sap of many plants that do not always provide them with sufficient PUFAs. Here, a plant-derived Delta 12 desaturase gene family BtFAD2 is characterized in B. tabaci and it shows that the BtFAD2-9 gene enables the pest to synthesize PUFAs, thereby significantly enhancing its fecundity. The role of BtFAD2-9 in reproduction is further confirmed by transferring the gene to Drosophila melanogaster, which also increases the fruit fly's reproduction. These findings reveal an extraordinary evolutionary scenario whereby a phytophagous insect acquired a family of plant genes that enables it to synthesize essential nutrients, thereby lessening its nutritional dependency and allowing it to feed and reproduce on many host plants.

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