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园艺学报 ›› 2022, Vol. 49 ›› Issue (5): 1121-1135.doi: 10.16420/j.issn.0513-353x.2021-0092

• 研究报告 • 上一篇    下一篇

睡莲WRKY家族的全基因组鉴定和分子进化分析

潘鑫峰, 叶方婷, 毛志君, 李兆伟, 范凯()   

  1. 福建农林大学农学院,作物遗传育种与综合利用教育部重点实验室,福州 350002
  • 收稿日期:2021-12-06 修回日期:2022-02-11 出版日期:2022-05-25 发布日期:2022-05-25
  • 通讯作者: 范凯 E-mail:fankai@fafu.edu.cn
  • 基金资助:
    国家自然科学基金项目(31701470);中国博士后基金项目(2017M610388);中国博士后基金项目(2018T110637);福建农林大学杰出青年科研人才计划项目(xjq201917);福建农林大学科技创新专项基金项目(CXZX2020007A);福建省自然科学基金项目(2021J01073)

Genomic Identification and Molecular Evolution of the WRKY Family in Nymphaea colorata

PAN Xinfeng, YE Fangting, MAO Zhijun, LI Zhaowei, FAN Kai()   

  1. Key Laboratory of Ministry of Education for Genetics,Breeding and Multiple Utilzation of Crops,College of Agriculture,Fujian Agriculture And Forestry University,Fuzhou 350002,China
  • Received:2021-12-06 Revised:2022-02-11 Online:2022-05-25 Published:2022-05-25
  • Contact: FAN Kai E-mail:fankai@fafu.edu.cn

摘要:

在睡莲中共鉴定出69个NcWRKY转录因子,将其分成3个亚家族,即Ⅰ、Ⅱ和Ⅲ,其中Ⅱ亚家族可进一步分为Ⅱa、Ⅱb、Ⅱc、Ⅱd和Ⅱe,与拟南芥中WRKY亚家族分类相同。Ⅱc亚家族中含有17个成员,是睡莲WRKY家族中成员数最多的亚家族。所有成员的蛋白质二级结构中无规则卷曲所占比例高达为39% ~ 78%。motif 1和motif 3被注释为WRKY保守结构。NcWRKY成员在睡莲14条染色体中均有分布,其中Ⅱa亚家族中所有成员都定位在Nc4号染色体。启动子顺式调控元件分析发现,NcWRKY成员广泛参与激素调控反应,通过不同组织中表达量分析筛选出在成熟叶柄中高表达的NcWRKY04NcWRKY18,在花瓣中高表达的NcWRKY05和在雄蕊中高表达的NcWRKY61。基因复制事件分析发现,NcWRKY家族主要以片段复制事件为主。基因表达网络关系分析预测NcWRKY61NcWRKY63可能与其他成员有共表达关系。

关键词: 睡莲, WRKY, 全基因组鉴定, 分子进化

Abstract:

Sixty-nine NcWRKY transcription factors were identified in Nymphaea colorata and can be divided into three large subfamilies(I,Ⅱ and Ⅲ). The Ⅱ subfamily can be further classified into Ⅱa,Ⅱb,Ⅱc,Ⅱd and Ⅱe. The Ⅱc as subfamily has the highest number of NcWRKY members with 17 members. Random coil accounted for 39%-78% in the protein secondary structure of the NcWRKY members. Motif 1 and motif 3 were annotated as WRKY conserved domain. NcWRKY members were distributed in waterlily 14 chromosomes. All members of the Ⅱa subfamily were located on chromosome Nc4. NcWRKY members can be regulated by hormones through the cis-element analysis of their promoters. NcWRKY04 and NcWRKY18 had very high expression level in mature leafstalk,NcWRKY05 had very high expression level in flower and NcWRKY61 had very high expression level in stamen through tissue specific expression analysis. NcWRKY61 and NcWRKY63 may have a co-expression relationship with other members through the gene expression network.

Key words: Nymphaea colorata, WRKY, genomic identification, molecular evolution

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