Deep Sequencing Reveals Early Reprogramming of Arabidopsis Root Transcriptomes Upon Ralstonia solanacearum Infection
文献类型： 外文期刊
作者： Zhao, Cuizhu 1 ; Wang, Huijuan 1 ; Lu, Yao 1 ; Hu, Jinxue 1 ; Qu, Ling 2 ; Li, Zheqing 1 ; Wang, Dongdong 1 ; He, Yizhe 1 ;
作者机构： 1.Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China
2.Ningxia Acad Agr & Forestry Sci, Natl Wolfberry Engn Res Ctr, Ningxia 750002, Peoples R China
3.Univ Barcelona, Genet Sect, E-08028 Barcelona, Catalonia, Spain
4.UAB, CSIC, IRTA, UB,CRAG, Barcelona 08193, Catalonia, Spain
期刊名称：MOLECULAR PLANT-MICROBE INTERACTIONS （ 影响因子：4.171； 五年影响因子：4.836 ）
ISSN： 0894-0282
年卷期： 2019 年 32 卷 7 期
页码：
收录情况： SCI
摘要： Bacterial wilt caused by the bacterial pathogen Ralstonia solanacearum is one of the most devastating crop diseases worldwide. The molecular mechanisms controlling the early stage of R. solanacearum colonization in the root remain unknown. Aiming to better understand the mechanism of the establishment of R. solanacearum infection in root, we established four stages in the early interaction of the pathogen with Arabidopsis roots and determined the transcriptional profiles of these stages of infection. A total 2,698 genes were identified as differentially expressed genes during the initial 96 h after infection, with the majority of changes in gene expression occurring after pathogen-triggered root-hair development observed. Further analysis of differentially expressed genes indicated sequential activation of multiple hormone signaling cascades, including abscisic acid (ABA), auxin, jasmonic acid, and ethylene. Simultaneous impairment of ABA receptor genes promoted plant wilting symptoms after R. solanacearum infection but did not affect primary root growth inhibition or root-hair and lateral root formation caused by R. solanacearum. This indicated that ABA signaling positively regulates root defense to R. solanacearum. Moreover, transcriptional changes of genes involved in primary root, lateral root, and root-hair formation exhibited high temporal dynamics upon infection. Taken together, our results suggest that successful infection of R. solanacearum on roots is a highly programmed process involving in hormone crosstalk.
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