Indole derivatives enhance resistance against the rice blast fungus Magnaporthe oryzae
Indole derivatives enhance resistance against the rice blast fungus Magnaporthe oryzae
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DOI：
10.1007/s10327-011-0300-7
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发表时间：
2011-05-01
影响因子：
1.2
通讯作者：
Arase, Sakae
中科院分区：
文献类型：
--
作者：
Ueno, Makoto;Kumura, Yumiko;Arase, Sakae
在叶片预处理的吲哚衍生物[吲哚-3-乙酸（IAA）色胺，或色氨酸]，稻瘟病形成抑制相比，那些处理的蒸馏水（DW）作为对照。苯丙氨酸解氨酶（PAL）的活性和PAL的表达显着增强IAA或色氨酸预处理的叶片，但没有在色胺预处理的叶片。这种诱导的电阻被抑制预处理与PAL抑制剂，α-氨基氧乙酸，在IAA-和在阿托伐他汀处理的叶片，但不是在色胺处理的叶片。这项研究有力地表明，吲哚衍生物IAA色胺和色氨酸可以增强由不同代谢途径支持的抗病机制。
In leaves pretreated with an indole derivative [indole-3-acetic acid (IAA) tryptamine, or tryptophan], blast lesion formation was suppressed compared to those treated with distilled water (DW) as a control. Phenylalanine ammonia-lyase (PAL) activity and PAL expression were significantly enhanced in the IAA- or tryptophan-pretreated leaves, but not in tryptamine-pretreated leaves. This induction of resistance was inhibited by pretreatment with a PAL inhibitor, alpha-aminooxyacetic acid, in IAA- and in tryptophan-treated leaves, but not in tryptamine-treated leaves. This study strongly shows that the indole derivatives IAA tryptamine and tryptophan can enhance a disease resistance mechanism that is supported by different metabolic pathways.