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园艺学报 ›› 2022, Vol. 49 ›› Issue (11): 2439-2448.doi: 10.16420/j.issn.0513-353x.2021-0543

• 研究报告 • 上一篇    下一篇

桑树MaERF105-Like的克隆及其在干旱胁迫下的表达分析

黄仁维, 任迎虹(), 祁伟亮, 曾睿, 刘欣宇, 邓彬艳   

  1. 成都师范学院化学与生命科学学院,特色园艺生物资源开发与利用四川省高校重点实验室,成都 611130
  • 收稿日期:2022-06-08 修回日期:2022-07-18 出版日期:2022-11-25 发布日期:2022-11-25
  • 通讯作者: 任迎虹 E-mail:renyinghong@163.com
  • 基金资助:
    四川省科技厅应用基础重点项目(2018JY0442);成都师范学院高层次人才引进项目(2021YJRC2020-22);成都师范学院校级创新团队项目(CSCXTD2020A04)

Cloning of Mulberry MaERF105-Like Gene and Its Expression Under Drought Stress

HUANG Renwei, REN Yinghong(), QI Weiliang, ZENG Rui, LIU Xinyu, DENG Binyan   

  1. College of Chemistry and Life Sciences,Sichuan Provincial Key Laboratory for Development and Utilization of Characteristic Horticultural Biological Resources,Chengdu Normal University,Chengdu 611130,China
  • Received:2022-06-08 Revised:2022-07-18 Online:2022-11-25 Published:2022-11-25
  • Contact: REN Yinghong E-mail:renyinghong@163.com

摘要:

以桑树‘德果1号’为材料,克隆获得MaERF105-Like及其启动子序列。序列分析发现,MaERF105-Like的cDNA序列长为1 131 bp,包含1个长度为882 bp的开放阅读框,编码293个氨基酸,蛋白质分子量为32.43 kD,等电点为8.71。MaERF105-Like含有1个AP2/ERF保守结构域,与ERF家族B3亚家族成员聚为一类,且与番茄SlERF5亲缘关系较近。亚细胞定位预测显示,MaERF105-Like蛋白可能定位在细胞核。启动子分析显示,MaERF105-Like启动子中含有与ABA、MeJA、乙烯及防御与胁迫相关的顺式作用元件。qRT-PCR结果显示,MaERF105-Like的表达水平受干旱诱导显著上调,复水后MaERF105-Like的表达水平显著下调。本研究结果表明MaERF105-Like可能在桑树抵御干旱的过程中具有重要作用。

关键词: 桑树, MaERF105-Like, 启动子, 干旱, 表达分析

Abstract:

MaERF105-Like gene and its promoter were cloned from‘Deguo 1’. Sequence analysis showed that the length of MaERF105-Like cDNA was 1 131 bp with an ORF of 882 bp,encoding 293 amino acids with molecular weight 32.43 kD and isoelectric point 8.71. MaERF105-Like has one AP2/ERF domain,belongs to B3 group of ERF family and shares a close relationship with tomato SlERF5. Subcellular localization prediction showed that MaERF105-Like might be located in nucleus. Promoter analysis showed that MaERF105-Like promoter possesses cis-acting elements involved in ABA,MeJA,ethylene and defense and stress responsiveness. qRT-PCR result showed that the expression level of MaERF105-Like was up-regulated by drought,and its expression was significantly down-regulated after rewatering treatment. The results of this study showed that MaERF105-Like might play an important role

in the resistance to drought in mulberry.

Key words: mulberry, MaERF105-Like, promoter, drought, expression analysis

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