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Genomewide identification of PPR gene family and prediction analysis on restorer gene in Gossypium

文献类型： 外文期刊

作者： Zhao, Nan 1 ; Wang, Yumei 1 ; Hua, Jinping 1 ;

作者机构： 1.China Agr Univ, Beijing Key Lab Crop Genet Improvement, Lab Cotton Genet Genom & Breeding, Key Lab Crop Heterosis & Utilizat,Minist Educ,Col, Beijing 100193, Peoples R China

2.Hubei Acad Agr Sci, Res Inst Cash Crops, Wuhan 430064, Hubei, Peoples R China

关键词： Gossypium; PPR gene family; phylogenetic analysis; cytoplasmic male sterility; restorer gene

期刊名称：JOURNAL OF GENETICS （ 2020影响因子：1.166； 五年影响因子：1.212 ）

ISSN： 0022-1333

年卷期： 2018 年 97 卷 5 期

页码：

收录情况： SCI

摘要： Pentatricopeptide repeat (PPR) gene family plays an essential role in the regulation of plant growth and organelle gene expression. Some PPR genes are related to fertility restoration in plant, but there is no detailed information in Gossypium. In the present study, we identified 482 and 433 PPR homologues in Gossypium raimondii (D5) and G. arboreum (A2) genomes, respectively. Most PPR homologues showed an even distribution on the whole chromosomes. Given an evolutionary analysis to PPR genes from G. raimondii (D5), G. arboreum (A2) and G. hirsutum genomes, eight PPR genes were clustered together with restoring genes of other species. Most cotton PPR genes were qualified with no intron, high proportion of -helix and classical tertiary structure of PPR protein. Based on bioinformatics analyses, eight PPR genes were targeted in mitochondrion, encoding typical P subfamily protein with protein binding activity and organelle RNA metabolism in function. Further verified by RNA-seq and quantitative real-time PCR (qRT-PCR) analyses, two PPR candidate genes, Gorai.005G0470 (D5) and Cotton_A_08373 (A2), were upregulated in fertile line than sterile line. These results reveal new insights into PPR gene evolution in Gossypium.

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