2024-03-29T05:26:44Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1874592020-07-01T04:31:17Zcom_10261_12com_10261_8col_10261_265
Sulzbacher, Marcelo A.
Grebenc, Tine
Nouhra, Eduardo R.
Giachini, Admir J.
Martín, María P.
Baseia, I.G.
2019-08-02T06:56:54Z
2019-08-02T06:56:54Z
2019-07
Symbiosis - Rehovot 78(3): 275–286 (2019)
0334-5114
http://hdl.handle.net/10261/187459
10.1007/s13199-019-00617-3
1878-7665
http://dx.doi.org/10.13039/501100002923
http://dx.doi.org/10.13039/501100003593
http://dx.doi.org/10.13039/501100002322
Hysterangium basidiomata were collected associated with Coccoloba alnifolia and C. laevis (Polygonaceae), in the Guaribas Biological Reserve in the Atlantic rainforest, of northeastern Brazil during the rainy seasons of 2012–2013. Based on its unique morphological and molecular traits, this new taxon is described as Hysterangium atlanticum sp. nov. The most prominent morphological characters that separate H. atlanticum from other close relatives are the large size of the basidiomata, the white peridium that rapidly turns greyish-orange to pale-red where bruised or exposed to air, and the ellipsoid to suboblong spores with a minutely verrucose surface. Molecular analyses of the LSU, SSU, atp6, and EF-1α markers were done. The analyses of the concatenated atp6–EF-1α matrix confirmed the placement of the new species in the /hysterangium lineage. Moreover, at the infra-generic level, Hysterangium atlanticum sp. nov. forms a sister clade with Hysterangium sp. from Dicymbe forests located in neighboring Guyana. Moreover, the ectomycorrhizae (EcM) formed by H. atlanticum and roots of Coccoloba species was confirmed, based on identical ITS nrDNA sequences obtained from basidiomata and EcM root tissues. The main conspicuous features of the EcM are: a well-developed plectenchimatous mantle, the ramarioid, abundant emanating hyphae with clamps and covered with crystals, the presence of oleoacanthocystidia, and the whitish rhizomorphs. This is the first report of a Hysterangium species forming EcM with native members of Coccoloba spp. in South America.
eng
openAccess
Ectomycorrhizae
Hypogeous fungi
Hysterangiales
Neotropics
Phylogeny
Hysterangium atlanticum sp. nov., forms ectomycorrhizae with Coccoloba species (Polygonaceae) from the Atlantic rainforest of Northeastern Brazil
artículo