Up-regulation of LSB1/GDU3 affects geminivirus infection by activating the salicylic acid pathway

被引：63

作者：

Chen, Hao ^{[1
,2
]}

Zhang, Zhonghui ^{[1
,2
]}

Teng, Kunling ^{[2
]}

Lai, Jianbin ^{[1
,2
]}

Zhang, Yiyue ^{[1
,2
]}

Huang, Yiliang ^{[1
]}

Li, Yin ^{[1
]}

Liang, Liming ^{[1
]}

Wang, Yiqin ^{[2
]}

Chu, Chengcai ^{[2
]}

Guo, Huishan ^{[3
]}

Xie, Qi ^{[1
,2
]}

机构：

[1] Sun Yat Sen Zhongshan Univ, Stake Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China

[2] Chinese Acad Sci, State Key Lab Plant Genom, Natl Ctr Plant Gene Res, Inst Genet & Dev Biol, Beijing 100101, Peoples R China

[3] Chinese Acad Sci, State Key Lab Plant Genom, Natl Ctr Plant Gene Res, Inst Microbiol, Beijing 100080, Peoples R China

来源：

PLANT JOURNAL | 2010年 / 62卷 / 01期

关键词：

functional genomics; geminivirus; plant-microbe interaction; CURLY-TOP-VIRUS; SYSTEMIC ACQUIRED-RESISTANCE; ARABIDOPSIS-THALIANA; DNA-REPLICATION; CELL-CYCLE; ESSENTIAL COMPONENT; DISEASE RESISTANCE; VIRAL REPLICATION; PATHOGEN RESPONSE; PROTEIN INTERACTS;

D O I：

10.1111/j.1365-313X.2009.04120.x

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

P>Geminiviruses include a large number of single-stranded DNA viruses that are emerging as useful tools to dissect many fundamental processes in plant hosts. However, there have been no reports yet regarding the genetic dissection of the geminivirus-plant interaction. Here, a high-throughput approach was developed to screen Arabidopsis activation-tagged mutants which are resistant to geminivirus Beet severe curly top virus (BSCTV) infection. A mutant, lsb1 (less susceptible to BSCTV 1), was identified, in which BSCTV replication was impaired and BSCTV infectivity was reduced. We found that the three genes closest to the T-DNA were up-regulated in lsb1, and the phenotypes of lsb1 could only be recapitulated by the overexpression of GDU3 (GLUTAMINE DUMPER 3), a gene implicated in amino acid transport. We further demonstrated that activation of LSB1/GDU3 increased the expression of components in the salicylic acid (SA) pathway, which is known to counter geminivirus infection, including the upstream regulator ACD6. These data indicate that up-regulation of LSB1/GDU3 affects BSCTV infection by activating the SA pathway. This study thus provides a new approach to study of the geminivirus-host interaction.

引用

页码：12 / 23

页数：12

共 55 条

[41] The gain-of-function Arabidopsis acd6 mutant reveals novel regulation and function of the salicylic acid signaling pathway in controlling cell death, defenses, and cell growth [J].