Studies on the Symbiosis between Some Natural Truffles and Taxus wallichiana Zucc in Lam Dong Province, Vietnam

AbstractThe truffle gives the formation of the mantle and Hartig net characteristic of the ectomycorrhizal association with host plant roots where water, mineral nutrients and organic carbon are exchanged. Truffles are found in many countries, but are not known in Vietnam. The aim of this research was to examine the effect of some truffles originating from Hungary (Tuber aestivum, Choiromyces meandriformis and Terfezia sp.) on Taxus wallichiana Zucc development in a greenhouse pot experiment. The mycelia of these fungi were isolated from the original samples on a MMN medium. Six-month old seedlings of Taxus wallichiana Zucc were used as test plants for inoculation with fungus mycelia. Pots 250mm in diameter were filled with a 2:1:1 mixture of local dry natural soil, perlite and peat, and each was planted with one plant. The results showed that Tuber aestivum had the better effects on the researched plants growth than Terferzia and Choiromyces meandriformis both in the diameter and the length development as well as buds forming of the plant. In Vietnam selected natural arbuscular mycorrhizal (AM) fungi helped plant growing as well, while Trichoderma spp. reduced this effect