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首页> 外文期刊>Plant Molecular Biology >Differential responses of rice to inoculation with wild-type and non-pathogenic mutants of Magnaporthe oryzae
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Differential responses of rice to inoculation with wild-type and non-pathogenic mutants of Magnaporthe oryzae

机译：水稻对稻瘟病菌野生型和非致病性突变株接种的差异反应

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We analyzed the response of rice to Magnaporthe oryzae infection using two mutant strains deficient in Mgb1 and Mst12, which are essential for the development of appresoria and penetration pegs. Both mutants induced the much lower levels of accumulation of phytoalexins than wild-type, suggesting that the massive production of phytoalexins requires the fungal invasion of rice cells. Intense accumulation of H2O2 in a single whole cell also required fungal penetration. Microarray analysis of rice gene expression revealed mutant-specific gene expression, indicating that signal exchange between rice and M. oryzae commence before fungal penetration of the rice cell. In situ detection of mRNAs for peroxidase and b-1,3-glucanase showed that expression of these genes also occurs after penetration as observed for phytoalexin production.
机译：我们使用两个Mgb1和Mst12缺陷的突变菌株分析了水稻对稻瘟病菌感染的响应，这对于发育上腹和穿透钉至关重要。两种突变体诱导的植物抗毒素的积累水平均低于野生型，表明植物抗毒素的大量生产需要真菌侵染水稻细胞。 H2O2在单个完整细胞中的强烈积累也需要真菌渗透。水稻基因表达的微阵列分析揭示了突变体特异性基因表达，表明水稻和米曲霉之间的信号交换在真菌渗透到水稻细胞之前就开始了。原位检测过氧化物酶和b-1,3-葡聚糖酶的mRNA显示，这些基因的表达在渗透后也发生，如植物抗毒素的产生所观察到的。

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