Induced resistance in tomato plants to the toxin-dependent necrotrophic pathogen Alternaria alternata
Induced resistance in tomato plants to the toxin-dependent necrotrophic pathogen Alternaria alternata
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DOI：
10.1016/j.pmpp.2009.02.001
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发表时间：
2008-11-01
影响因子：
2.7
通讯作者：
Kodama, Motoichiro
中科院分区：
文献类型：
--
作者：
Egusa, Mayumi;Akamatsu, Hajime;Kodama, Motoichiro
番茄链格孢菌(Alternaria Alternata，AA)是番茄的一种坏死性病原菌，引起番茄链格孢菌茎溃烂病。其致病力取决于寄主特异性AAL毒素的产生。用非致病AA预接种或用AA制备的激发子预接种可减轻病原菌的症状。水杨酸(SA)和茉莉酸(JA)依赖的防御反应不参与非致病AA诱导的番茄对病原菌的抗性。这些结果表明，不依赖于SA和JA信号的另一种未知的信号通路可能通过激活多个防御基因的表达来调节诱导的抗性。(C)2009爱思唯尔有限公司。保留所有权利。
A necrotrophic pathogen, the tomato pathotype of Alternaria alternata (Aa) causes Alternaria stem canker on tomato. Its pathogenicity depends on the production of host-specific AAL-toxin. Pre-inoculation with nonpathogenic Aa or pretreatment an elicitor prepared from Aa reduced disease symptoms by the pathogen. Salicylic acid (SA)- and jasmonic acid (JA)-dependent defense responses in tomato are not involved in the resistance to the pathogen induced by nonpathogenic Aa. The results suggest that an alternative and unknown signaling pathway independent of SA- and JA-signaling might modulate the induced resistance by activating the expression of the multiple defense genes. (C) 2009 Elsevier Ltd. All rights reserved.