Heritability and Evolutionary Potential Drive Cold Hardiness in the Overwintering Ophraella communa Beetles
文献类型： 外文期刊
作者： Zhao, Chenchen 1 ; Ma, Fangzhou 2 ; Chen, Hongsong 4 ; Wan, Fanghao 1 ; Guo, Jianying 1 ; Zhou, Zhongshi 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China
2.Minist Environm Protect, Key Lab Biosafety, Nanjing, Jiangsu, Peoples R China
3.Minist Environm Protect, Nanjing Inst Environm Sci, Nanjing, Jiangsu, Peoples R China
4.Guangxi Acad Agr Sci, Guangxi Key Lab Biol Crop Dis & Insect Pests, Inst Plant Protect, Nanning, Peoples R China
关键词： Ophraella communa; heritability; cold hardiness; super cooling point; glycerol content; chill coma recovery time
期刊名称：FRONTIERS IN PHYSIOLOGY （ 影响因子：4.566； 五年影响因子：4.804 ）
ISSN： 1664-042X
年卷期： 2018 年 9 卷
页码：
收录情况： SCI
摘要： Chill tolerance plays a crucial role that allows insect species to adapt to cold environments. Two Chinese geographical populations (Laibin and Yangzhou populations) were selected to understand the chill resistance and evolutionary potential in the Ophraella communa, a biological control agent of the invasive common ragweed, Ambrosia artemisiifolia. Super-cooling point assays, knockdown tests under static low-temperature conditions and determination of glycerol content were studied. ANOVAs indicated significant differences regarding chill coma recovery time, super-cooling point, and glycerol content across populations and sexes. The narrow-sense heritability (h(2)) estimates of cold resistance based on a parental half-sibling breeding design ranged from 0.39 to 0.53, and the h(2) value was significantly higher in the Yangzhou population than in the Laibin population. Additive genetic variances were significantly different from zero for cold tolerance. The Yangzhou population of O. communa has a strong capability to quickly gain resistance to cold. We conclude that the O. communa beetle has a plasticity that can provide cold resistance in the changing climate conditions.
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