Localized and Systemic Increase of Phenols in Tomato Roots Induced by Glomus versiforme Inhibits Ralstonia solanacearum
Localized and Systemic Increase of Phenols in Tomato Roots Induced by Glomus versiforme Inhibits Ralstonia solanacearum
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DOI：
10.1111/j.1439-0434.2004.00892.x
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发表时间：
2004-10
影响因子：
1.5
通讯作者：
Honghui Zhu;Q. Yao
中科院分区：
文献类型：
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作者：
Honghui Zhu;Q. Yao
青枯菌是热带和亚热带国家的重要植物病原菌。在这里，我们描述了抑制R。由于丛枝菌根（AM）真菌局部或全身诱导的酚类增加，导致青枯菌。在盆栽中，R.接种番茄后，根际、根表和木质部中的青枯菌数量分别减少了26.7%、79.3%和81.7%。与Glomus versiforme Berch的关系。两种R.青枯菌（G.紫花苜蓿提高了根组织中可溶性酚和细胞壁结合酚的含量，但提高的方式不同。而R.青枯菌对细胞壁结合酚含量的促进作用较强; versiforme优选提高可溶性酚含量。分根实验表明，R.青枯菌对G. versiforme和G. versiforme也增加了酚含量全身，但在较小程度上比局部。
Ralstonia solanacearum is an important plant pathogen in tropical and subtropical countries. Here, we describe the inhibition of R. solanacearum as a result of increased phenols induced locally or systemically by an arbuscular mycorrhizal (AM) fungus. In pot cultures, R. solanacearum populations in the rhizosphere, on root surfaces and in the xylem were decreased by 26.7, 79.3 and 81.7%, respectively, following inoculation of tomato plants (Lycopersicon esculentum Mill.) with Glomus versiforme Berch. Colonization of the plants by both R. solanacearum and G. versiforme increased the contents of soluble phenols and cell-wall bound phenols in root tissue, but with different patterns. Whereas R. solanacearum preferably promoted the cell-wall bound phenol content, G. versiforme preferably enhanced the soluble phenol content. Split root experiments revealed that R. Solanacearum was inhibited by G. versiforme, and that G. versiforme also increased the phenol content systemically, but to a lesser extent than locally.