Changes in concentrations and transcripts of plant hormones in wheat seedling roots in response to Fusarium crown rot
文献类型： 外文期刊
作者： Gao, Yutian 1 ; Tian, Xuejun 1 ; Wang, Weidong 1 ; Xu, Xiangru 1 ; Su, Yuqing 1 ; Yang, Jiatian 1 ; Duan, Shuonan 2 ; Li, Jinlong 1 ; Xin, Mingming 1 ; Peng, Huiru 1 ; Sun, Qixin 1 ; Xie, Chaojie 1 ; Ma, Jun 1 ;
作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Inst Biotechnol & Food Sci, Shijiazhuang 050051, Hebei, Peoples R China
关键词： Fusarium crown rot (FCR); Wheat; Hormone; Root; TaOPR3
期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）
ISSN： 2095-5421
年卷期： 2023 年 11 卷 5 期
页码：
收录情况： SCI
摘要： Fusarium crown rot (FCR) is a soilborne disease causing severe yield losses in many wheat-growing areas of the world. Diseased plants show browning and necrosis of roots and stems causing white heads at maturity. Little is known about the molecular processes employed by wheat roots to respond to the dis-ease. We characterized morphological, transcriptional and hormonal changes in wheat seedling roots fol-lowing challenge with Fusarium pseudograminearum (Fp), the main pathogen of FCR. The pathogen inhibited root development to various extents depending on plants' resistance level. Many genes respon-sive to FCR infection in wheat roots were enriched in plant hormone pathways. The contents of com-pounds involved in biosynthesis and metabolism of jasmonic acid, salicylic acid, cytokinin and auxin were drastically changed in roots at five days post-inoculation. Presoaking seeds in methyl jasmonate for 24 h promoted FCR resistance, whereas presoaking with cytokinin 6-benzylaminopurine made plants more susceptible. Overexpression of TaOPR3, a gene involved in jasmonic acid biosynthesis, enhanced plant resistance as well as root and shoot growth during infection.(c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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