浙江农业学报 ›› 2022, Vol. 34 ›› Issue (2): 207-220.DOI: 10.3969/j.issn.1004-1524.2022.02.01

• 作物科学 • 上一篇    下一篇

大豆PP2C家族基因鉴定与响应盐胁迫的转录组分析

杨昕霞a(), 唐满生b, 张斌b,*()   

  1. a.湖南科技学院,后勤处,湖南 永州 425199
    b.湖南科技学院,化学与生物工程学院,湖南 永州 425199
  • 收稿日期:2021-05-21 出版日期:2022-02-25 发布日期:2022-03-02
  • 通讯作者: 张斌
  • 作者简介:张斌,E-mail: zhangbin27104@163.com
    杨昕霞(1982—),女,湖南永州人,学士,副教授,研究方向为植物资源利用。E-mail: 76406391@qq.com
  • 基金资助:
    湖南省自然科学基金(2020JJ4030);湖南科技学院重点项目(17XKY012)

Identification of soybean PP2C family genes and transcriptome analysis in response to salt stress

YANG Xinxiaa(), TANG Manshengb, ZHANG Binb,*()   

  1. a. Department of Logistics, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China
    b. College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China
  • Received:2021-05-21 Online:2022-02-25 Published:2022-03-02
  • Contact: ZHANG Bin

摘要:

植物蛋白磷酸酶2C(PP2C)能够通过影响植物体内多种生物学过程在环境胁迫响应中发挥重要作用。为研究栽培大豆PP2C家族成员在盐胁迫中的功能,通过生物信息学手段结合转录组学分析对栽培大豆PP2C家族进行了系统探究。在栽培大豆中共鉴定出126个PP2C家族成员,并将其在进化树上分为11个亚家族,同一亚家族的成员具有类似的基因和蛋白结构。盐胁迫转录组测序结果显示,大豆126个GmPP2C基因中有9个是差异表达基因,其中,GmPP2C41、GmPP2C48、GmPP2C72、GmPP2C84、GmPP2C89、GmPP2C107和GmPP2C113在盐处理后表达水平上调,GmPP2C27和GmPP2C114在盐处理后表达下调。qRT-PCR结果显示,GmPP2C89和GmPP2C113在盐处理6 h表达水平上调最高。GO富集分析发现,9个差异基因主要具有离子结合和磷酸酶活性;Y2H结果显示,GmPP2C113和GmPP2C47能够互作。以上结果将为进一步研究大豆PP2C家族成员在盐胁迫响应中的功能与分子机制提供理论依据,为大豆耐盐性遗传改良提供重要候选基因。

关键词: 大豆, 蛋白磷酸酶, 盐胁迫, 转录组, 差异表达基因

Abstract:

Protein phosphatases (PP2Cs) plays important roles in response to environmental stress by affecting a variety of biological processes in plants. In order to explore the function of members of PP2C family of cultivated soybeans in salt stress, PP2C family of cultivated soybeans was systematically explored through bioinformatics and transcriptom analysis. A total of 126 PP2C members were identified in this study and were divided into 11 subfamilies, and PP2Cs in the same subfamily have similar gene and protein structures. Transcriptome sequencing results showed that 9 GmPP2Cs were differentially expressed genes (DEGs) under salt stress, of which GmPP2C41, GmPP2C48, GmPP2C72, GmPP2C84, GmPP2C89, GmPP2C107 and GmPP2C113 were up-regulated after salt treatment, while GmPP2C27 and GmPP2C114 were down-regulated. qRT-PCR results showed that GmPP2C89 and GmPP2C113 had the highest expression level at 6 h after salt treatment. GO enrichment analysis found that the nine DEGs mainly had ion binding and phosphatase activity. The Y2H results showed that GmPP2C113 and GmPP2C47 could interact. Therefore, the above results would provide a theoretical basis for further research on the functions and molecular mechanisms of soybean PP2C family members in response to salt stress and provide important candidate genes for the genetic improvement of soybean salt tolerance.

Key words: soybean (Glycine max), type 2C protein phosphatase, salt stress, transcriptome analysis, differentially expressed genes

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