IAA-overproducer mutants of Hebeloma cylindrosporum Romagnesi mycorrhizal with Pinus pinaster (Ait.) Sol. and P. sylvestris L. in hydroponic culture

摘要: Indole-3-acetic acid (IAA) is thought to play a role in the regulation of ectomycorrhiza development, and vigorous mycorrhiza formers such as Pisolithus Laccaria have previously been shown accumulate large amounts IAA culture medium vitro, particularly presence tryptophan. Recently, 5-fluoroindole-resistant IAA-overproducing mutant strains Hebeloma cylindrosporum Romagnesi developed described by Durand et al. (1992). We used some these corresponding wild-type mycobionts on seedlings Pinus pinaster (Ait.) Sol. P. sylvestris L. semi-hydroponic an attempt study effects independent species-specific differences. However, no significant differences between were found host growth rate, shoot carbohydrate concentration, root morphology, concentration or mycorrhizal biomass. Since previous work showed stimulation other mutants formation Petri dish test tube cultures, we assume that system prevents build up tryptophan fungal origin, which most likely precondition for enhanced production.