CRILAR   12590
CENTRO REGIONAL DE INVESTIGACIONES CIENTIFICAS Y TRANSFERENCIA TECNOLOGICA DE LA RIOJA
Unidad Ejecutora - UE
artículos
Título:
Mycorrhizal status of plant species in the Chaco Serrano Woodland from central Argentina
Autor/es:
FRACCHIA S., ARANDA A., GOPAR, SILVANI V., FERNÁNDEZ L. GODEAS A
Revista:
MYCORRHIZA
Editorial:
springer-berlin
Referencias:
Lugar: Heidelberg; Año: 2008 vol. 19 p. 205 - 214
ISSN:
0940-6360
Resumen:
We examined the mycorrhizal type of 128 plant
species in two patches of native vegetation of the Chaco
Serrano Woodland, central Argentina, the largest dry forest
area in South America. Of the 128 plant species investigated
(belonging to 111 genera in 53 families), 114 were
colonized by arbuscular mycorrhizal fungi (AM), orchid
mycorrhizal associations were present in the five terrestrial
orchid species analyzed, one ectomycorrhiza was only
present in Salix humboldtiana Willd., and 96 harbored a
dark septate endophyte (DSE) association. Co-occurrence
of AM and DSE was observed in 88 plant species. We
determine morphological types of arbuscular mycorrhizal
fungi (Arum, Paris, and intermediate AM structures) and
report the mycorrhizal status in 106 new species, 12 of
which are endemic to central Argentina and two, Aa
achalensis Schltr. and Buddleja cordobensis Griseb., are
declared to be vulnerable species. Root colonization in the
Chaco Serrano Woodland is widespread and should be
considered in revegetation programs due to the deterioration
of this particular ecosystem. Considering the predominance
of AM and DSE associations and the various
potential benefits that these associations may bring to plant
establishment, they should receive special attention in
conservation and reforestation of these woodlands.