Comparison between Laccaria basidiomata and ectomycorrhizae abundances in Ixtlán de Juarez, Oaxaca

Abstract

In the forests of Ixtlán de Juarez, Oaxaca, the genus Laccaria is one of the most productive at basidiomata level. In this work, we compared the placement of Laccaria in the edible ectomycorrhizal fungi community measured by basidiomata abundance versus mycorrhizae. The sampling took place in 3 sites with Pinus patula dominance. The fungi basidiomata were collected to determine their taxonomic identity and production data (quantity and weight). Mycorrhizae were obtained from soil core samples, which ITS DNA was sequenced for molecular identification. There was no correspondence between the species with higher basidiomata production (L. laccata AR = 0.43, Cantharellus tubaeformis AR = 0.27, Lactarius chrysorrehus AR = 0.10, and L. vinaceobrunnea AR = 0.08) and those with more abundant mycorrhizae (Lactarius aff deceptivus AR = 0.25, Cortinarius aff ochrophyllus AR = 0.12, Hydnum aff cuspidatum AR = 0.05, Russula sp.1 AR = 0.05, and Sebacina aff dimitica AR = 0.05). Potentially, the genera with most basidiomata and mycorrhizae should be used in mycorrhization programs and tested in greenhouse experiments. This would allow the production of ectomycorrhizal inoculums consortia based on most ecologically outstanding species.