Arabidopsis enhanced disease susceptibility mutants exhibit enhanced susceptibility to several bacterial pathogens and alterations in PR-1 gene expression
Arabidopsis enhanced disease susceptibility mutants exhibit enhanced susceptibility to several bacterial pathogens and alterations in PR-1 gene expression
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DOI：
10.1105/tpc.9.3.305
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发表时间：
1997-03-01
期刊：
影响因子：
11.6
通讯作者：
Ausubel, FM
中科院分区：
文献类型：
--
作者：
Rogers, EE;Ausubel, FM
为了鉴定限制病原体攻击的植物防御反应，先前鉴定了对毒性细菌病原体假单胞菌斑点致病变种ES 4326表现出增强的疾病易感性的拟南芥eds突变体。在这项研究中，我们表明，四个eds突变体（eds 5 -1，eds 6 -1，eds 7 -1，和eds 9 -1）具有可区分的表型相对于一个面板的细菌植物病原体的易感性和病原体攻击后激活病程相关的PR-I基因表达的能力。四个eds突变体在安装过敏反应中没有表现出可观察到的缺陷。虽然所有四个eds突变体也能够安装一个系统的获得性抗性反应，增强生长的P. s。maculicola ES 4326在三个eds突变体的二次感染的叶片中仍然明显。这些数据表明，eds基因定义了一组多样的以前未知的防御反应，影响对有毒病原体的抗性。
To identify plant defense responses that limit pathogen attack, Arabidopsis eds mutants that exhibit enhanced disease susceptibility to the virulent bacterial pathogen Pseudomonas syringae pv maculicola ES4326 were previously identified. In this study, we show that each of four eds mutants (eds5-1, eds6-1, eds7-1, and eds9-1) has a distinguishable phenotype with respect to the degree of susceptibility to a panel of bacterial phytopathogens and the ability to activate pathogenesis-related PR-I gene expression after pathogen attack. None of the four eds mutants exhibited observable defects in mounting a hypersensitive response. Although all four eds mutants were also capable of mounting a systemic acquired resistance response, enhanced growth of P. s. maculicola ES4326 was still apparent in the secondarily infected leaves of three of the eds mutants. These data indicate that eds genes define a diverse set of previously unknown defense responses that affect resistance to virulent pathogens.