杨树<i>MIR156</i>基因家族的进化与功能分化-《江苏农业科学》

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Title:: Evolution and functional diversification of poplar MIR156 gene family

作者:: 刘志祥¹; 2; 曾超珍¹; 周永青¹; 谭晓风²; 1.中南林业科技大学生命科学与技术学院，湖南长沙 410004；2.经济林育种与栽培国家林业局重点实验室/中南林业科技大学林学院，湖南长沙 410004

Author(s):: Liu Zhixiang; et al

关键词:: 杨树; microRNA; MIR156基因家族; 分子进化; 功能分化

Keywords:: -

分类号:: Q943

DOI:: -

文献标志码:: A

摘要:: 为阐明杨树MIR156基因家族的进化过程和功能分化，研究了杨树MIR156基因家族的扩张模式、倍增时间、系统发育、表达方式、启动子元件和靶基因。结果表明：杨树MIR156基因家族主要通过染色体大片段重复实现扩张，而串联重复对此没有贡献；不同家族成员表达方式已分化，其中ptc-MIR156g/h/i/j表达活性最高；家族成员启动子顺式作用元件存在差异；杨树MIR156的靶基因包括29个SBP结构域蛋白质，由于成熟序列存在差异，家族成员调控的靶基因也表现出差异。说明杨树MIR156基因家族成员的功能已经分化，在杨树中可能形成了复杂的调控网络。

Abstract:: -

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