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题名: Genome-Wide Identification and Evolutionary Analysis of the SBP-Box Gene Family in Castor Bean
作者: Zhang, Shu-Dong1, 2; Ling, Li-Zhen1, 2
刊名: PLOS ONE
关键词: TRANSCRIPTION FACTORS ; PHYLOGENETIC ANALYSIS ; PROTEIN EVOLUTION ; DNA-BINDING ; ARABIDOPSIS ; SEQUENCE ; DATABASE ; DOMAIN ; PLANTS ; RATES
英文摘要: Genes in the SQUAMOSA promoter-binding-protein (SBP-box) gene family encode transcriptional regulators and perform a variety of regulatory functions that involved in the developmental and physiological processes of plants. In this study, a comprehensive computational analysis identified 15 candidates of the SBP-box gene family in the castor bean (Ricinus communis). The phylogenetic and domain analysis indicated that these genes were divided into two groups (group I and II). The group II was a big branch and was further classified into three subgroups (subgroup II-1 to 3) based on the phylogeny, gene structures and conserved motifs. It was observed that the genes of subgroup II-1 had distinct evolutionary features from those of the other two subgroups, however, were more similar to those of group I. Therefore, we inferred that group I and subgroup II-1 might retain ancient signals, whereas the subgroup II-2 and 3 exhibited the divergence during evolutionary process. Estimation of evolutionary parameters (dN and dN/dS) further supported our hypothesis. At first, the group I was more constrained by strong purifying selection and evolved slowly with a lower substitution rate than group II. As regards the three subgroups, subgroup II-1 had the lowest rate of substitution and was under strong purifying selection. By contrast, subgroups II-2 and 3 evolved more rapidly and experienced less purifying selection. These results indicated that the different evolutionary rates and selection strength caused the different evolutionary patterns of the members of SBP-box genes in castor bean. Taken together, these results provide better insights into understanding evolutionary divergence of the members of SBP-box gene family in castor bean and provide a guide for future functional diverse analyses of this gene family.
出版日期: 2014-01-22
卷号: 9, 期号:1, 页码:e86688
DOI标识: 10.1371/journal.pone.0086688
语种: 英语
收录类别: SCI
学科分类: Multidisciplinary Sciences
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/17947
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming, Peoples R China

Recommended Citation:
Zhang,ShuDong*;Ling,LiZhen.Genome-Wide Identification and Evolutionary Analysis of the SBP-Box Gene Family in Castor Bean,PLOS ONE,2014,9(1):e86688
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