PPR蛋白在玉米子粒发育中的研究进展  

Research Progress for Functions of PPR Proteins during Maize Kernel Development

作　　者：张欣欣 程文 王志武[1] 赵苏娴[1] 卢增斌[1] 唐媛 丁照华[1,2] ZHANG Xin-xin;CHENG Wen;WANG Zhi-wu;ZHAO Su-xian;LU Zeng-bin;TANG Yuan;DING Zhao-hua(Maize Research Institute,Shandong Academy of Agricultural Sciences/National Engineering Laboratory of Wheat and Maize/Key Laboratory of Maize Biology,Genetics and Breeding in the North of Huang-Huai-Hai,Ministry of Agriculture and Rural Affairs,Jinan 250100;College of Life Sciences,Shandong Normal University,Jinan 250014,China)

机构地区：[1]山东省农业科学院玉米研究所/小麦玉米国家工程实验室/农业农村部黄淮海北部玉米生物学与遗传育种重点实验室,济南250100 [2]山东师范大学生命科学学院,济南250014

出　　处：《玉米科学》2023年第1期54-61,共8页Journal of Maize Sciences

基　　金：山东省农业良种工程项目(2019LZGC002);山东省现代农业产业技术体系玉米创新团队(SDAIT-02-04);山东省农业科学院创新工程主要农作物育种关键技术(CXGC2021A09)。

摘　　要：PPR蛋白在真核生物中广泛存在,是最大的蛋白家族之一。该蛋白由一系列重复单位(形成两个反向平行的α螺旋)串联而成。PPR蛋白可与RNA特异性结合,参与细胞器RNA的加工和编辑。玉米中有约521个PPR蛋白成员,他们在子粒发育、叶片发育及胁迫响应等生物学过程中发挥重要作用,但多数分子功能尚未被鉴定。另外,PPR蛋白编码基因的突变体大多导致发育异常表型,如发育迟缓、子粒缺陷、叶色异常等。PPR proteins existed widely in eukaryote,and they are one of the largest families of proteins.PPR proteins are often composed of a series of repeating units(forming two reverse parallel alpha spirals).PPR proteins can be bind to RNA and take participation in the processing and editing of organelle RNA.In maize,there are ap⁃proximately 521 PPR protein members,which play an important role in biological processes such as kernel develop⁃ment,leaf development and stress response,but the most molecular functions have not been identified.Moreover,most of the mutants of PPR protein coding genes lead to developmental abnormalities,such as developmental retar⁃dation,kernel defects,leaf color abnormality and so on.

关 键 词：玉米 PPR蛋白 子粒发育 内含子剪切 RNA编辑 

分 类 号：S513.035.3[农业科学—作物学]