文献类型： 外文期刊

作者： Hao, Cong-Cong ¹ ; Jia, Jiao ¹ ; Chen, Zhan ³ ; Xing, Ji-Hong ¹ ; Weng, Qiao-Yun ⁴ ; Wang, Feng-Ru ¹ ; Dong, Jin-Gao ¹ ;

作者机构： 1.Agr Univ Hebei, Mycotoxin & Mol Plant Pathol Lab, Baoding 071001, Peoples R China

2.Jilin Acad Agr Sci, Inst Plant Protect, Gongzhuling 136100, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Inst Fruit Tree, Shijiazhuang 050061, Peoples R China

4.Hebei North Univ, Dept Agr & Forest Technol, Zhangjiakou 075131, Peoples R China

关键词： Arabidopsis thaliana;Botrytis cinerea;BT4;Disease resistance

期刊名称：AUSTRALASIAN PLANT PATHOLOGY （ 影响因子：1.599； 五年影响因子：1.708 ）

ISSN： 0815-3191

年卷期： 2013 年 42 卷 4 期

页码：

收录情况： SCI

摘要： Botrytis cinerea is a fungus with a necrotrophic lifestyle attacking over 200 crop hosts worldwide, resulting in significant economic losses. At present, the molecular and cellular mechanisms involved in plant resistance to B. cinerea and their genetic control are poorly understood. The Arabidopsis BT4 gene was previously isolated by DDRT-PCR under B. cinerea infection. However a role for BT4 in defense signaling has not been described to date. Compared with wild-type (wt) Col-0, the loss-of-function mutant of BT4 showed increased susceptibility to B. cinerea and enhanced expression of some defense-related genes such as PR1, SOD1, PPO, PAL, POD and CAT. However, expression of other defense-related genes such as NPR1, PR4 and PDF1.2 were repressed in the mutant compared with wt plants. In addition, transgenic lines overexpressing BT4 restored resistance to B. cinerea. Taken together, our results indicate that BT4 play an important role in Arabidopsis in resistance to B. cinerea perhaps by regulating the expression of defense-related genes in response to SA and JA signaling pathways.