Are Trechisporales ectomycorrhizal or non-mycorrhizal root endophytes?

Mary Luz Vanegas-León , Marcelo A. Sulzbacher , Andrea C. Rinaldi , Mélanie Roy , Marc-Andre Selosse , Maria Alice Neves

Abstract

Trechispora (Hydnodontaceae) is considered as a soil-inhabiting fungus. However, some species in the genus are frequently forming basidiomes on soil, a typical feature of ectomycorrhizal fungi. Ectomycorrhizal basidiomes are found in neotropical and subtropical region, but taxonomical information and DNA sequences of root fungi and basidiomes from native Atlantic Rainforest are poorly reported. Basidiomes and soil samples including roots, humus layer, and mineral soil were collected in the Atlantic Rainforest, in Florianópolis (South of Brazil). Sequences of the ITS region were obtained from all sample types and subjected to phylogenetic reconstruction. Two sequences amplified from apparently ectomycorrhizal roots belonged to Trechispora and suggested a root-associated ecology, at least biotrophic and possibly ectomycorrhizal. The analysis of isotope abundance in the same Brazilian site and in French Guiana showed that Trechispora thelephora has high 15N abundance and is often intermediate between ectomycorrhizal and saprotrophic species in 13C abundance. This is congruent with a plant biotrophic ecology, perhaps ectomycorrhizal. Future investigations in subtropical regions are needed to determine whether such a mode of nutrition is widespread among Trechispora.
Author Mary Luz Vanegas-León
Mary Luz Vanegas-León,,
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, Marcelo A. Sulzbacher
Marcelo A. Sulzbacher,,
-
, Andrea C. Rinaldi
Andrea C. Rinaldi,,
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, Mélanie Roy
Mélanie Roy,,
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, Marc-Andre Selosse (FB / DPTNC)
Marc-Andre Selosse,,
- Department of Plant Taxonomy and Nature Conservation
, Maria Alice Neves
Maria Alice Neves,,
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Journal seriesMycological Progress, ISSN 1617-416X, e-ISSN 1861-8952, (N/A 70 pkt)
Issue year2019
Vol18
No9
Pages1231-1240
Publication size in sheets0.5
Keywords in EnglishAtlantic rainforest, biotrophic nutrition, ectomycorrhizal fungi, isotopic analysis, ITS, phylogenetic analysis
ASJC Classification1110 Plant Science
DOIDOI:10.1007/s11557-019-01519-w
URL https://doi.org/10.1007/s11557-019-01519-w
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 03-03-2020, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.987; WoS Impact Factor: 2018 = 2.0 (2) - 2018=1.7 (5)
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