Search for elicitor of Magnaporthe oryzae using tryptamine pathway

在本研究中，我们研究了色胺途径在水稻对稻瘟病菌小种特异性抗性中的重要作用。通过接种稻瘟菌，观察到依赖色胺途径诱导水稻稻瘟病小种特异性抗性。不亲和米曲霉菌株的孢子发芽液(SGF)处理的水稻也观察到色胺途径介导的色胺积累、色氨酸脱羧酶和单胺氧化酶活性增加等现象。该因子是一种以甘露糖为主的低聚糖，其相对分子质量为10000，与一些化学处理所提出的因子的化学结构一致。

In this study, we investigated that tryptamine pathway plays an important role in race- specific resistance of rice to M. oryzae. Tryptamine pathway-dependent induction of rice blast race specific resistance was observed by M. oryzae inoculation. Tryptamine pathway mediated phenomena such as tryptamine accumulation, increase tryptophan decarboxylase and monoamine oxidase activities were also observed in rice treated with spore germination fluid (SGF) of incompatible M. oryzae strain, but not compatible M. oryzae strain. The factor was an oligosaccharide (molecular weight >10000) mainly composed of mannose, which is consistent with chemical structure of the factors proposed by some chemical treatments of SGF.