植物颗粒结合淀粉合酶GBSS基因家族的进化  

Evolutionary Pattern of the GBSS Gene Family in Plants

作　　者：王倩[1] 孙文静[1] 包颖[1] 

机构地区：[1]曲阜师范大学生命科学学院,曲阜273165

出　　处：《植物学报》2017年第2期179-187,共9页Chinese Bulletin of Botany

基　　金：国家自然科学基金(No.31570218)

摘　　要：为全面理解植物颗粒结合淀粉合酶(GBSS)基因在植物中的进化模式并重建其进化历史,利用20种陆生植物和2种藻类植物的基因组数据,通过生物信息学手段,深入挖掘和分析植物类群基因组中GBSS基因家族的构成和基因特点,推测其可能的扩增和丢失规律。结果共识别42条同源序列。系统发育和进化分析表明,GBSS基因起源古老,可能在所有绿色植物的祖先中就已经出现,之后在进化过程中不断发生谱系的特异扩张和拷贝丢失,并最终通过功能分化的形式在植物类群中被固定。We analyzed the evolutionary pattern of the granule-bound starch-synthase genes（GBSS） in 20 land plants and 2 algae from whole-genome data with bioinformatics methods. A total of 42 genes were detected and their sequence structures were characterized. Phylogenetic analysis revealed that the GBSS gene family had an ancient origin and complex evolutionary history. It probably appeared in the early evolutionary stage of green plants, then mostly experienced lineage-specific expansion and copy loss during evolution, and finally was fixed in different plant taxa via functional divergence.

关 键 词：基因组 系统发育 基因复制 拷贝丢失 功能分化 

分 类 号：Q946[生物学—植物学]