浙江农业学报 ›› 2018, Vol. 30 ›› Issue (12): 2024-2030.DOI: 10.3969/j.issn.1004-1524.2018.12.06

• 园艺科学 • 上一篇    下一篇

灰葡萄孢菌诱导的百合转录辅激活因子LlMBF1a基因的克隆及其特征分析

曹兴1, 张秀省1, 侯栋2, 隋娟娟3, 穆红梅1, 高祥斌1, 吕福堂1, 郭尚敬1, 王桂清1,*   

  1. 1.聊城大学 农学院,山东 聊城 252059;
    2.甘肃省农业科学院 蔬菜研究所,甘肃 兰州 730070;
    3.阜阳师范学院 生物与食品工程学院,安徽 阜阳 236037
  • 收稿日期:2018-03-12 出版日期:2018-12-25 发布日期:2018-12-28
  • 通讯作者: 王桂清,E-mail: wangguiqing@lcu.edu.cn
  • 作者简介:曹兴(1984—),男,山东滕州人,博士,讲师,主要从事园艺作物病害防治研究。E-mail: caoxinglina@163.com
  • 基金资助:
    国家自然科学基金(31601788);山东省自然科学基金(ZR2016CB36);聊城大学博士科研启动基金(318051312)

Cloning and characterization of LlMBF1a in lily induced by gray mold pathogen

CAO Xing1, ZHANG Xiusheng1, HOU Dong2, SUI Juanjuan3, MU Hongmei1, GAO Xiangbin1, LYU Futang1, GUO Shangjing1, WANG Guiqing1,*   

  1. 1. College of Agriculture, Liaocheng University, Liaocheng 252059, China;
    2. Vegetables Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;
    3. College of Biology and Food Engineering, Fuyang Normal College, Fuyang 236037, China
  • Received:2018-03-12 Online:2018-12-25 Published:2018-12-28

摘要: 转录辅激活因子MBF1a参与了植物对病原真菌的防御反应。利用电子克隆结合RT-PCR技术从百合中分离了LlMBF1a基因,其开放阅读框长429 bp,编码142个氨基酸。LlMBF1a分子量为15.53 ku,理论等电点为10.12,为稳定的水溶性非分泌蛋白,含有典型的MBF1结构域和α螺旋-转角-α螺旋模序。亚细胞定位分析表明,LlMBF1a主要在细胞核中表达。LlMBF1a在根、茎、鳞茎、叶中的表达量无显著差异,受灰葡萄孢菌侵染诱导表达且在相对抗病品种中持续高水平表达,表明LlMBF1a可能参与了百合对灰霉病的抗性反应。

关键词: 百合, MBF1, 灰葡萄孢菌, 基因克隆, 亚细胞定位, 基因表达

Abstract: Previous studies revealed that MBF1a was involved in host defense response. The MBF1a homologous gene was isolated from lily cultivar White Heaven by silico cloning and RT-PCR approaches. The open reading frame of LlMBF1a gene was 429 bp, encoding a protein of 142 amino acid residues, and the molecular weight of LlMBF1a protein was 15.53 ku with a theoretical isoelectric point of 10.12. Bioinformatics analysis predicted that LlMBF1a was a stable soluble non-secreted protein, containing a typical MBF1 motif and a helix-turn-helix motif. Subcellular localization assay indicated LlMBF1a expressed in nucleus. The expression of LlMBF1a was at a similar level in leaf, stem, bulb and root, and was induced by Botrytis cinerea. The up-regulation of LlMBF1a in resistant variety was higher and more persistent than that in susceptible variety, suggesting LlMBF1a might be correlated to the resistance of lily against gray mold.

Key words: lily, MBF1, Botrytis cinerea, gene cloning, subcellular localization, gene expression

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