Ectomycorrhizae between Alnus acuminata H.B.K. and Naucoria escharoides (Fr.:Fr.) Kummer from Argentina

BECERRA, A., G. DANIELE, L. DOMÍNGUEZ, E. NOUHRA & T. HORTON

MYCORRHIZA

Springer Verlag, Berlin, Heidelberg

Lugar: Alemania; Año: 2002 vol. 12 p. 61 - 66

0940-6360

Field ectomycorrhizae of Naucoria escharoides on Alnus acuminata (andean alder, aliso del cerro) are described in detail for the first time. Naturally occurring ectomycorrhizal roots were sampled from beneath sporocarps of N. escharoides.  The samples were taken from four natural forest plots in two homogeneous A. acuminata sites (Tucumán and Catamarca Provinces, Argentina).  The ectomycorrhizae are described morphologically and compared with PCR/RFLP analysis of the ITS region of the nuclear rDNA.  The most important morphological features of the ectomycorrhizae are a white to pale yellow mantle, simple to monopodial branches, hyaline emanating hyphae, abundant hyphal bundles emerging more or less perpendicularly from a plectenchymatous mantle, and an apex acute or rounded with or without mantle.  N. escharoides fruitbodies have white basal mycelium with similar characteristics of emanating hyphae as andean alder ectomycorrhizae.   Molecular analyses revealed same RFLP profile for sporocarps and the mycorrhizae.