Vierheilig H, Lerat S, Piché Y
Institut für Pflanzenschutz, Universität für Bodenkultur (BOKU) Wien, Peter-Jordan-Str. 82, Vienna, Austria.
Mycorrhiza. 2003 Jun;13(3):167-70. doi: 10.1007/s00572-002-0219-0. Epub 2003 Feb 12.
The arbuscular mycorrhizal (AM) non-host plants mustard, sugar beet, lupin and the AM host plant cucumber were used as test plants. Cucumber plants were grown either in the absence of the AM fungus (AMF) Glomus mosseae or in a split-root system, with one side mycorrhizal and one side non-mycorrhizal. Root exudates of the AM non-host plants, the non-mycorrhizal cucumber plants and the mycorrhizal and the non-mycorrhizal side of the split-root system of mycorrhizal cucumber plants were collected and applied to cucumber plants inoculated with the AMF. Root exudates of non-mycorrhizal cucumber plants showed a significant stimulatory effect on root colonization, whereas root exudates from the mycorrhizal and the non-mycorrhizal sides of a split-root system of a mycorrhizal cucumber plant did not show this stimulatory effect and were even slightly inhibitory. Root exudates of the two AM non-host plants mustard and sugar beet significantly reduced root colonization in cucumber plants, whereas no such effect was observed when root exudates of the AM non-host plant lupin were applied.
丛枝菌根（AM）非寄主植物芥菜、甜菜、羽扇豆以及AM寄主植物黄瓜被用作试验植物。黄瓜植株要么在没有摩西球囊霉（AMF）的情况下生长，要么在分根系统中生长，一侧形成菌根，另一侧不形成菌根。收集AM非寄主植物、非菌根黄瓜植株以及菌根黄瓜植株分根系统中菌根侧和非菌根侧的根系分泌物，并将其施用于接种了AMF的黄瓜植株上。非菌根黄瓜植株的根系分泌物对根定殖有显著的促进作用，而菌根黄瓜植株分根系统中菌根侧和非菌根侧的根系分泌物则没有这种促进作用，甚至有轻微的抑制作用。两种AM非寄主植物芥菜和甜菜的根系分泌物显著降低了黄瓜植株的根定殖，而施用AM非寄主植物羽扇豆的根系分泌物时未观察到这种效果。
