Mycorrhizal status of plant species in the Chaco Serrano Woodland from central Argentina |
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Authors: | Sebastian Fracchia Adriana Aranda Analia Gopar Vanesa Silvani Laura Fernandez Alicia Godeas |
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Institution: | (1) CONICET, Buenos Aires, Argentina;(2) Universidad de Buenos Aires, Buenos Aires, Argentina;(3) Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 4to piso Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
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Abstract: | 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. |
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Keywords: | Mycorrhiza Arbuscular mycorrhiza AM morphology Paris Arum Dark septate endophytes Chaco Serrano woodland Argentina |
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