Genome-wide analysis of basic/helix-loop-helix gene family in peanut and assessment of its roles in pod development
文献类型： 外文期刊
作者： Gao, Chao 1 ; Sun, Jianlei 1 ; Wang, Chongqi 1 ; Dong, Yumei 1 ; Xiao, Shouhua 1 ; Wang, Xingjun 2 ; Jiao, Zigao 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Vegetables & Flowers, Shandong Key Lab Greenhouse Vegetable Biol, Jinan, Peoples R China
2.Shandong Acad Agr Sci, Biotechnol Res Ctr, Jinan, Peoples R China
3.Shandong Prov Key Lab Crop Genet Improvement Ecol, Jinan, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2017 年 12 卷 7 期
页码：
收录情况： SCI
摘要： The basic/helix-loop-helix (bHLH) proteins constitute a superfamily of transcription factors that are known to play a range of regulatory roles in eukaryotes. Over the past few decades, many bHLH family genes have been well-characterized in model plants, such as Arabidopsis, rice and tomato. However, the bHLH protein family in peanuts has not yet been systematically identified and characterized. Here, 132 and 129 bHLH proteins were identified from two wild ancestral diploid subgenomes of cultivated tetraploid peanuts, Arachis duranensis (AA) and Arachis ipaensis (BB), respectively. Phylogenetic analysis indicated that these bHLHs could be classified into 19 subfamilies. Distribution mapping results showed that peanut bHLH genes were randomly and unevenly distributed within the 10 AA chromosomes and 10 BB chromosomes. In addition, 120 bHLH gene pairs between the AA-subgenome and BB-subgenome were found to be orthologous and 101 of these pairs were highly syntenic in AA and BB chromosomes. Furthermore, we confirmed that 184 bHLH genes expressed in different tissues, 22 of which exhibited tissue-specific expression. Meanwhile, we identified 61 bHLH genes that may be potentially involved in peanut-specific subterranean. Our comprehensive genomic analysis provides a foundation for future functional dissection and understanding of the regulatory mechanisms of bHLH transcription factors in peanuts.
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