A very long-chain fatty acid enzyme gene, PxHacd2 affects the temperature adaptability of a cosmopolitan insect by altering epidermal permeability
文献类型： 外文期刊
作者： Lei, Gaoke 1 ; Zhou, Huiling 1 ; Chen, Yanting 1 ; Vasseur, Liette 1 ; Gurr, Geoff M. 1 ; You, Minsheng 1 ; You, Shijun 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Inst Appl Ecol, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Fuzhou 350002, Peoples R China
2.Minist Educ, Joint Int Res Lab Ecol Pest Control, Fuzhou 350002, Peoples R China
3.Fujian Agr & Forestry Univ, Ministerial & Prov Joint Innovat Ctr Safety Prod C, Fuzhou 350002, Peoples R China
4.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou 350013, Peoples R China
5.Brock Univ, Dept Biol Sci, St Catharines, ON L2S 3A1, Canada
6.Charles Sturt Univ, Gulbali Inst, Orange, NSW 2800, Australia
关键词： Plutella xylostella; Very long-chain fatty acids; Extreme temperature; CRISPR; Cas9; Water balance
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 891 卷
页码：
收录情况： SCI
摘要： Temperature fluctuations pose challenges to poikilotherms, such as insects, especially under climate change condi-tions. Very long-chain fatty acids (VLCFAs) form important structural components of membranes and epidermal sur-faces, so play important roles in adaptation to temperature stress in plants. It has been unclear whether VLCFAs are involved in epidermis formation and thermal resistance in insects. In this study, we focused on the 3-hydroxy acyl-CoA dehydratase 2 (Hacd2), an important enzyme in the synthesis pathway of VLCFAs, in a cosmopolitan pest, the diamondback moth, Plutella xylostella. Hacd2 was cloned from P. xylostella and the relative expression pattern was identified. Epidermal permeability increased with the decreased VLCFAs in the Hacd2-deficient P. xylostella strain, which was constructed by using the CRISPR/Cas9 system. Survival and fecundity of the Hacd2-deficient strain was sig-nificantly lower than that of the wildtype strain when subject to desiccating environmental stress. Hacd2 mediates thermal adaptability in P. xylostella by changing epidermal permeability so is likely to be key to its remaining a major pest species under predicted climate change conditions.
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