表型可塑性变异的生态-发育机制及其进化意义

被引:32
作者
高乐旋
陈家宽
杨继
机构
[1] 复旦大学进化生物学研究中心复旦大学生物多样性与生态工程教育部重点实验室
关键词
生态-发育; 进化; 表型可塑性;
D O I
暂无
中图分类号
Q941 [植物演化与植物发展];
学科分类号
071001 ;
摘要
表型可塑性赋予生物个体在不同环境条件下通过产生不同表型来维持其适合度的能力。研究结果显示多数可塑性变异的产生是基于对环境变异信号的响应、改变基因表达式样并调整发育轨迹的结果,表观遗传调控体系在基因选择性表达和可塑性变异的跨世代传递过程中发挥了重要作用。不同物种和种群对环境变化的敏感性、发生可塑性变异的能力以及可塑性反应模式不尽相同,预示着控制可塑性能力并独立于控制性状的可塑性基因的存在,这些基因是直接响应环境信号并控制表型表达的调控基因。表型可塑性不仅是物种适应性进化的一个重要方面,也是选择进化的产物,物种的表型可塑性变异对其生态适应和进化模式有深远的影响。
引用
收藏
页码:441 / 451
页数:11
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