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园艺学报 ›› 2023, Vol. 50 ›› Issue (7): 1482-1494.doi: 10.16420/j.issn.0513-353x.2022-0472

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

铁十字秋海棠GASA家族全基因组鉴定及叶斑形成的初步探索

薛珍珍1, 关鸿发3, 李娜2, 李凌飞2,*(), 钟春梅1,*()   

  1. 1 华南农业大学生物质工程研究院,农业农村部能源植物资源与利用重点实验室,广东省农林生物质工程技术研究中心,广州 510642
    2 深圳市中国科学院仙湖植物园,深圳市南亚热带植物多样性重点实验室,广东深圳 518004
    3 华南农业大学生命科学学院,广州 510642
  • 收稿日期:2023-02-26 修回日期:2023-05-15 出版日期:2023-07-25 发布日期:2023-07-26
  • 通讯作者:
    *(E-mail:
  • 基金资助:
    广东省基础与应用基础研究基金项目(2021A1515011315); 深圳市城管科研项目(202205); 仙湖植物园科研基金项目(FLSF-2021-01)

Genome-wide Identification of GASA Family and Preliminary Exploration of Leaf Variegation Formation in Begonia masoniana

XUE Zhenzhen1, GUAN Hongfa3, LI Na2, LI Lingfei2,*(), ZHONG Chunmei1,*()   

  1. 1 Key Laboratory of Energy Plants Resource and Utilization,Ministry of Agriculture and Rural Affairs,Guangdong Engineering Technology Research Center of Agricultural and Forestry Biomass,Institute of Biomass Engineering,South China Agricultural University,Guangzhou 510642,China
    2 Key Laboratory of Southern Subtropical Plant Diversity,Fairy Lake Botanical Garden,Shenzhen & Chinese Academy of Sciences,Shenzhen,Guangdong 518004,China
    3 College of Life and Science,South China Agricultural University,Guangzhou 510642,China
  • Received:2023-02-26 Revised:2023-05-15 Published:2023-07-25 Online:2023-07-26

摘要:

为了解铁十字秋海棠(Begonia masoniana)中Gibberellic Acid-stimulated Arabidopsis(GASA)基因家族的功能,采用生物信息的方法鉴定铁十字秋海棠GASA家族成员,并分析其在不同组织器官以及赤霉素(GA)、脱落酸(ABA)、水杨酸(SA)、茉莉酸甲酯(MeJA)、生长素(auxin)等处理后的基因表达模式。结果显示,铁十字秋海棠含10个GASA家族成员,可分为4个亚家族,其蛋白结构特征是含2 ~ 3个保守motif,1个GASA保守结构域;其基因结构特征是含0 ~ 10个内含子,不同成员之间内含子数差异明显。该家族基因启动子含有大量光响应元件和激素响应元件。基因家族成员在各组织器官中广泛表达,但差异较大;对外源GA、ABA、SA、MeJA以及auxin等响应差异明显,可能参与了不同组织器官生长发育以及各种生物或非生物胁迫响应过程,其中BmaGASA7可能在叶斑形成过程中发挥重要作用。

关键词: 铁十字秋海棠, GASA, 激素响应, 表达分析, 叶斑

Abstract:

In order to understand the potential functions of Gibberellic Acid-stimulated Arabidopsis (GASA)in Begonia masoniana(BmaGASAs),the bioinformatics analysis was carried out to identify the members of BmaGASA gene family,and then their expression patterns were analyzed. The results showed that ten members of the GASA family were distributed in four subgroups. The structural characteristics of BmaGASAs include 2-3 motifs,one GASA conserved domain,0-10 introns that varies among different members. The cis-acting elements distribution analysis showed that the BmaGASAs promoters contained abundant light and hormone response elements. BmaGASAs were widely expressed in various tissues and organs. In addition,BmaGASAs had significant differences in response to GA,ABA,SA,MeJA and auxin. This study indicates that members of the BmaGASA gene family are highly conserved and have diverse expression patterns. They may be involved in the growth and development of various tissues and organs,as well as the response processes of various biological or abiotic stress. Among them,BmaGASA7 may play an important role in leaf variegation formation.

Key words: Begonia masoniana, GASA, hormonal response, expression analysis, leaf variegation