[Content of salicylic and jasmonic acids in pea roots (Pisum sativum L.) at the initial stage of symbiotic or pathogenic interaction with bacteria of the family Rhizobiaceae].

E G Rudikovskaya, G P Akimova, A V Rudikovskii, N B Katysheva, L V Dudareva
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Abstract

A change in the contents of endogenous salicylic and jasmonic acids in the roots of the host plant at the preinfectious stage of interaction with symbiotic (Rhizobium leguminosarum) and pathogenic (Agrobacterium rizogenes) bacteria belonging for to the family Rhizobiaceae was studied. It was found that the jasmonic acid content increased 1.5–2 times 5 min after inoculation with these bacterial species. It was shown that dynamics of the change in the JA and SA contents depends on the type of infection. Thus, the JA content decreased in the case of pathogenesis, while the SA content increased. At the same time, an increased JA content was observed during symbiosis. The observed regularities could indicate the presence of different strategies of hormonal regulation for interaction with symbiotic and pathogenic bacteria belonging to the family Rhizobiaceae in peas plants.

[豌豆根(Pisum sativum L.)与根瘤菌科细菌共生或致病作用初期的水杨酸和茉莉酸含量]。
在与属于根瘤菌科的共生细菌(豆芽根瘤菌)和致病细菌(农杆菌)相互作用的感染前阶段,研究了寄主植物根部内源水杨酸和茉莉酸含量的变化。研究发现,接种这些细菌后 5 分钟,茉莉酸含量增加了 1.5-2 倍。研究表明,JA 和 SA 含量的动态变化取决于感染类型。因此,在致病情况下,JA 含量减少,而 SA 含量增加。同时,在共生过程中观察到 JA 含量增加。观察到的规律性表明,豌豆植物在与根瘤菌科共生细菌和致病细菌相互作用时,存在不同的激素调节策略。
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