香树和传粉黄蜂的基因组提供了关于无花果黄蜂共同进化的见解
Xingtan Zhang1, Gang Wang2, Shengcheng Zhang1
1Center for Genomics and Biotechnology, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002.
Cell
|October 9, 2020
概括
对树 (Ficus) 和它们的黄蜂授粉者的基因分析揭示了对空中根的发展和共生共进的遗传见解. 这项研究强调了基因重复和荷尔蒙调节驱动独特的植物特征.
科学领域:
- 基因组学
- 进化生物学
- 植物学
背景情况:
- 树 (Ficus) 以其空中根和与特定黄蜂授粉者的共生关系而闻名.
- 属表现出多种繁殖策略,包括单和二.
- 了解这些特征的遗传基础对于进化研究至关重要.
研究的目的:
- 测序和比较Ficus microcarpa (有空基) 和Ficus hispida (没有空基) 的基因组.
- 测序与F. microcarpa共同进化的黄蜂授粉者Eupristina verticillata的基因组.
- 研究空中根部发育的基因基础,性别决定和植物与传粉者的共同适应.
主要方法:
- 对F. microcarpa,F. hispida和E. verticillata的全基因组测序
- 对基因组进行比较分析以识别变异和基因扩展.
- 人口基因组分析以检测共适应的特征.
主要成果:
- 在两个Ficus物种之间观察到动态型变异.
- 素相关基因的拷贝数扩张和素产量增加与F. microcarpa的空中根部发育相关.
- 在F. hispida中确定了一种男性特异性的AGAMOUS对应物 (FhAG2).
- 基因组特征表明与授粉者共同适应,涉及特定的挥发性化合物.
结论:
- 测序的基因组为研究空中根和生殖系统的演变提供了宝贵的资源.
- 基因复制和辅酶通路是空中根形成的关键.
- 这项研究揭示了植物授粉者多样化和繁殖策略的基因组基础.
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