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作者报道了稻瘟病菌ZA_(51)、ZA_(49)和ZE_3的孢子萌发液对供试水稻品种秀水04和苏御糯秧苗没有致病性与其它明显毒性,但对它们的亲和性组合如ZA_(49)+秀水04和非亲和性组合如ZE_3+秀水04都有诱导侵染作用。且强致病性稻瘟菌ZA_(49)或ZA_(51)的孢子萌发液的诱导侵染活性高于弱致病性菌株ZE_3的孢子萌发液,孢子萌发液水层部分的诱导侵染活性高于脂层部分。这一事实说明,稻瘟病菌孢子萌发液中存在稻瘟病菌致病因子及有关物质,它将为补充解释水稻抗性品种的“抗性丧失”的原因,为进一步说明稻瘟病菌不同致病菌间的互作及稻瘟病菌致病机制等提供可能性。
The authors reported that spore germination solutions of ZA_ (51), ZA_ (49) and ZE_3 of Magnaporthe grisea have no pathogenicity and other obvious toxicity to the tested rice cultivars Xiushui 04 and Suyu glutinous rice seedlings, but their affinity combination Such as ZA_ (49) + Xiushui 04 and non-affinity combinations such as ZE_3 + Xiushui 04 have induced infection. The induced activity of the spore germination liquid of the strongly pathogenic Magnaporthe grisea ZA_ (49) or ZA_ (51) was higher than that of the spore germination liquid and spore germination liquid of the weak pathogenic strain ZE_3 Higher than the lipid layer. This fact shows that the pathogenic fungi of Magnaporthe grisea and their related substances exist in spore germination liquid of Magnaporthe grisea, which will be the reason for explaining the “resistance loss” of rice resistant varieties. In order to further explain the different pathogenesis of Magnaporthe grisea, Interaction between bacteria and the pathogenic mechanism of Magnaporthe oryzae to provide possibilities.