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Mycorrhizal associations in ferns from Southern Ecuador


Lehnert, M; Kottke, I; Setaro, S; Pazmino, L F; Suárez, J P; Kessler, Michael (2009). Mycorrhizal associations in ferns from Southern Ecuador. American Fern Journal, 99(4):292-306.

Abstract

We conducted a survey on the mycorrhizal status of neotropical ferns, focusing on previously neglected taxa. These include the filmy ferns (Hymenophyllaceae), grammitid ferns (Polypodiaceae), and the genus Elaphoglossum (Dryopteridaceae). Samples were collected at different sites in southern Ecuador, Prov. Loja, Morona-Santiago, and Zamora-Chinchipe. Among the 85 investigated species (101 samples, 10 families), 19 were associated with arbuscular mycorrhizal fungi (AMF) and 36 were infected by dark septate endophytes (DSE), which are identified as ascomycetes and here considered as a kind of mycorrhiza similar to the ericoid type. The roots of 30 species (including all non-grammitid Polypodiaceae and half of the Elaphoglossum species) were free of evident fungal infection. AMF were frequent in terrestrial species (29.10% of species, or 48.49% of infected terrestrial samples). DSE prevailed in epiphytic species (58.62% of species, or 96.15% of infected epiphytic samples) and were also common in terrestrial samples of predominantly epiphytic species.

Abstract

We conducted a survey on the mycorrhizal status of neotropical ferns, focusing on previously neglected taxa. These include the filmy ferns (Hymenophyllaceae), grammitid ferns (Polypodiaceae), and the genus Elaphoglossum (Dryopteridaceae). Samples were collected at different sites in southern Ecuador, Prov. Loja, Morona-Santiago, and Zamora-Chinchipe. Among the 85 investigated species (101 samples, 10 families), 19 were associated with arbuscular mycorrhizal fungi (AMF) and 36 were infected by dark septate endophytes (DSE), which are identified as ascomycetes and here considered as a kind of mycorrhiza similar to the ericoid type. The roots of 30 species (including all non-grammitid Polypodiaceae and half of the Elaphoglossum species) were free of evident fungal infection. AMF were frequent in terrestrial species (29.10% of species, or 48.49% of infected terrestrial samples). DSE prevailed in epiphytic species (58.62% of species, or 96.15% of infected epiphytic samples) and were also common in terrestrial samples of predominantly epiphytic species.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Systematic and Evolutionary Botany
Dewey Decimal Classification:580 Plants (Botany)
Scopus Subject Areas:Life Sciences > Ecology, Evolution, Behavior and Systematics
Life Sciences > Plant Science
Language:English
Date:2009
Deposited On:07 Apr 2010 14:01
Last Modified:14 Jun 2021 11:45
Publisher:American Fern Society, Inc.
ISSN:0002-7685
OA Status:Green
Publisher DOI:https://doi.org/10.1640/0002-8444-99.4.292

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