Identification of host-derived chemical signals involved in the symbiotic interactions between ectomycorrhizal fungi and woody plants

本研究的目的是确定植物代谢产物作为一个共生信号外生菌根共生。独脚金内酯，诱导宿主识别反应，菌丝分支，在丛枝菌根真菌，已被证明是完全无效的外生菌根真菌，Pisolithus tinctorius和松茸，在我们新开发的生物测定。根提取物和分泌物从桉树已发现诱导菌丝分枝P.着色。这表明，某些根代谢物以外的独脚金内酯的生产和渗出桉树根作为外生菌根真菌的共生信号。

The aim of this study is to identify plant metabolites that act as a symbiotic signal in the ectomycorrhizal symbiosis. Strigolactones, which induce a host recognition response, hyphal branching, in arbuscular mycorrhizal fungi, have shown to be totally inactive on the ectomycorrhizal fungi, Pisolithus tinctorius and Tricholoma matsutake, in our newly developed bioassay. Root extracts and exudates from Eucalyptus have found to induce hyphal branching in P.tinctorius. This suggests that certain root metabolites other than strigolactones are produced in and exuded from Eucalyptus roots as a symbiotic signal for ectomycorrhizal fungi.