生物
植物进化
基因
基因复制
次生代谢
基因组
ATP合酶
萜烯
生物合成
萜类
基因家族
进化生物学
植物
作者
Qidong Jia,Reid Brown,Tobias G Köllner,Jianyu Fu,Xinlu Chen,Gane Ka-Shu Wong,Jonathan Gershenzon,John L. Bowman,Feng Chen
标识
DOI:10.1073/pnas.2100361119
摘要
Significance Land plants produce numerous terpenoids that regulate development and mediate environmental interactions. Thus, how typical plant terpene synthase ( TPS ) genes originated and evolved to create terpenoid diversity is of fundamental interest. By investigating TPSs from the genomes and transcriptomes of diverse taxa of green plants, it was demonstrated here that the ancestral TPS gene originated in land plants after divergence from green algae and encoded a bifunctional ent -kaurene synthase for phytohormone biosynthesis. This ancestral TPS then underwent gene duplication at least twice early in land plant evolution, leading to three ancient TPS lineages reflecting sub-functionalization of class I and II activities for phytohormone biosynthesis and neo-functionalization from primary to secondary metabolism, followed in each case by dynamic functional divergence.
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