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DOI: 10.3852/mycologia.97.5.1047
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Mycologia, 97(5), 2005, pp. 1047-1057.
© 2005 by The Mycological Society of America

Anatomical and molecular characterization of Lactarius aff. omphaliformis, Russula alnijorullensis and Cortinarius tucumanensis ectomycorrhizae on Alnus acuminata


Alejandra Becerra 1

     Instituto Multidisciplinario de Biología Vegetal (CONICET), C.C. 495, 5000. Córdoba, Argentina

Ludwig Beenken

     Department Biology I and GeoBio-Center, Ludwig Maximilian University, Systematic Mycology, Menzinger Straße 67, D-80638 München, Germany

Karin Pritsch

     Institute of Soil Ecology (GSF), Department of Ecology, Technische Universität München (TUM), Ingolstaedter Landstrasse 1, D-85764 Oberschleissheim, Germany

Graciela Daniele

     Instituto Multidisciplinario de Biología Vegetal (CONICET), C.C. 495, 5000. Córdoba, Argentina

Michael Schloter

     Institute of Soil Ecology, GSF-National Research Centre for Environment and Health GmbH, Ingolstaedter Landstraße 1, D-85764 Oberschleissheim, Germany

Reinhard Agerer

     Department Biology I and GeoBio-Center, Ludwig Maximilian University, Systematic Mycology, Menzinger Straße 67, D-80638 München, Germany

Ectomycorrhizae (ECM) of Lactarius aff. omphaliformis Romagn., Russula alnijorullensis (Sing.) Sing. and Cortinarius tucumanensis Mos. on Andean alder (Alnus acuminata Kunth) were characterized and identified. The identification of the fungal symbionts was achieved by morpho-anatomical observations of mycorrhizae and by comparison of ITS-RFLP patterns obtained from ECM and fruitbodies. L. aff. omphaliformis ECM differed in some morphological details such as ramification and mantle type from ECM of the same species on A. glutinosa. L. aff. omphaliformis ECM show an orange to ochre mantle containing latex cells, which stain with sulpho-vanillin, emanating hyphae without clamps. R. alnijorullensis ECM represent a typical Russula-type-ECM, light yellow to pinkish, the outer mantle being composed of triangular latex-filled cells staining with sulpho-vanillin, emanating hyphae without clamps. C. tucumanensis ECM exhibit a white (silvery) to yellowish brown mantle covered with soil particles, emanating hyphae with clamps.

Key words: Alnus, ectomycorrhizal fungi, morphological characterization, PCR, RFLP

1 Corresponding author. E-mail: abecerra{at}imbiv.unc.edu.ar






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Copyright © 2005 by The Mycological Society of America.