Scheffknecht S, Mammerler R, Steinkellner S, Vierheilig H
Institut für Pflanzenschutz, Department für Angewandte Pflanzenwissenschaften, und Pflanzenbiotechnologie, Universität für Bodenkultur Wien, Peter-Jordan-Str. 82, A-1190, Wien, Austria.
Mycorrhiza. 2006 Jul;16(5):365-70. doi: 10.1007/s00572-006-0048-7. Epub 2006 Mar 10.
The effect of root exudates from mycorrhizal and non-mycorrhizal tomato plants on microconidia germination of the tomato pathogen Fusarium oxysporum f. sp. lycopersici was tested. Microconidia germination was enhanced in the presence of root exudates from mycorrhizal tomato plants. The more tomato plants were colonized by the arbuscular mycorrhizal fungus Glomus mosseae, the more microconidia germination was increased, indicating that alterations of the exudation pattern depended on the degree of root AM colonization. Moreover, alterations of the exudation pattern of mycorrhizal plants are not only local, but also systemic. Testing the exudates from plants with a high and a low P level revealed that the alterations of the root exudates from mycorrhizal plants, resulting in a changed effect on microconidia germination, are not due to an improved P status of mycorrhizal plants.
测试了菌根番茄植株和非菌根番茄植株的根系分泌物对番茄病原菌尖孢镰刀菌番茄专化型微小分生孢子萌发的影响。在菌根番茄植株根系分泌物存在的情况下，微小分生孢子的萌发得到增强。丛枝菌根真菌摩西球囊霉侵染的番茄植株越多，微小分生孢子的萌发增加得就越多，这表明分泌物模式的改变取决于根系丛枝菌根的侵染程度。此外，菌根植物分泌物模式的改变不仅是局部的，也是系统性的。对高磷和低磷水平植株的分泌物进行测试发现，菌根植物根系分泌物的改变对微小分生孢子萌发产生了不同的影响，这并非是由于菌根植物磷营养状况的改善所致。
