DIFFERENTIAL INDUCTION OF CHALCONE SYNTHASE MESSENGER-RNA ACTIVITY AT THE ONSET OF PHYTOALEXIN ACCUMULATION IN COMPATIBLE AND INCOMPATIBLE PLANT PATHOGEN INTERACTIONS
DIFFERENTIAL INDUCTION OF CHALCONE SYNTHASE MESSENGER-RNA ACTIVITY AT THE ONSET OF PHYTOALEXIN ACCUMULATION IN COMPATIBLE AND INCOMPATIBLE PLANT PATHOGEN INTERACTIONS
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DOI：
10.1073/pnas.81.11.3384
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发表时间：
1984-01-01
期刊：
影响因子：
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通讯作者：
LAMB, CJ
中科院分区：
文献类型：
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作者：
BELL, JN;DIXON, RA;LAMB, CJ
查尔酮合成酶的mRNA活性的变化，苯丙烷类代谢的第一个酶的黄酮类化合物/黄酮类化合物的生物合成，已经研究了与植物抗毒素防御反应的表达在种族品种特异性的相互作用之间的菜豆下胚轴和部分活体营养真菌炭疽病的病原菌Colletotrichum lindemuthianum。在不相容的相互作用（宿主抗性）中，在苯丙烷衍生的植物防御素菜豆蛋白积累和过敏性抗性表达开始之前，查耳酮合酶mRNA活性早期但局部增加。相比之下，在相容的相互作用（宿主易感）中，在感染的早期阶段没有mRNA活性的诱导，而是在症状发展开始时尝试病变限制期间延迟的广泛增加。这些数据表明，植物抗毒素基因表达的控制是一个关键的早期组成部分，在防御反应的生物胁迫细胞在种族品种特异性主机病原体的相互作用。
Changes in the mRNA activity of chalcone synthase, the first enzyme of phenylpropanoid metabolism specific to flavonoid/isoflavonoid biosynthesis, have been investigated in relation to expression of the phytoalexin defense response in race-cultivar specific interactions between hypocotyls of Phaseolus vulgaris and the partially biotrophic fungus Colletotrichum lindemuthianum, causal agent of anthracnose. In an incompatible interaction (host resistant) there is an early but localized increase in chalcone synthase mRNA activity prior to the onset of accumulation of the phenylpropanoid-derived phytoalexin phaseollin and expression of hypersensitive resistance. In contrast, in a compatible interaction (host susceptible) there is no induction of mRNA activity in the early stages of infection but rather a delayed, widespread increase during attempted lesion limitation at the onset of symptom development. The data indicate that control of phytoalexin gene expression is a key early component in the defense responses of biologically stressed cells during a race-cultivar specific host-pathogen interaction.