Persistence of ecto- and ectendomycorrhizal fungi associated with <Emphasis Type="Italic">Pinus montezumae</Emphasis> in experimental microcosms |
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Authors: | Edith Garay–Serrano Ma del Pilar Ortega–Larrocea Frédérique Reverchon Iris Suárez–Quijada |
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Institution: | 1.Instituto de Geología, Departamento de Edafología,Universidad Nacional Autónoma de México (UNAM),Ciudad de Mexico,Mexico;2.Posgrado de Ciencias de la Tierra,Universidad Nacional Autónoma de México (UNAM),Ciudad de Mexico,Mexico;3.Red de Estudios Moleculares Avanzados,Instituto de Ecología, A.C,Veracruz,Mexico |
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Abstract: | Ectomycorrhizal (ECM) and ectendomycorrhizal fungal species associated with Pinus montezumae were recorded in 8 year-old trees established in microcosms and compared with those associated with 2 year-old trees, in order to determine their persistence over the long-term. Mycorrhizal root tips were morphologically and anatomically characterized and sequenced. The extension of extramatrical mycelium of ECM fungi with long exploration strategies was evaluated. In total, 11 mycorrhizal species were registered. Seven mycorrhizal species were detected on both 2 and 8 year-old pines: Atheliaceae sp., Rhizopogon aff. fallax, R. aff. occidentalis, Suillus pseudobrevipes, Tuber separans, Wilcoxina mikolae and Wilcoxina rehmii. One species, Thelephora terrestris, was exclusively associated with two year–old seedlings, while Cenococcum geophilum, Pezizaceae sp. and Pyrenomataceae sp. were exclusively found on 8 year-old trees. Atheliaceae sp. was the ECM fungal species that presented the most abundant mycelium. Finally, we report one new fungal species of Pezizaceae occurring as a symbiont of P. montezumae. |
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