Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes
Dark septate endophytes (DSEs) live asymptomatically in the roots of vascular plants, are common in arctic and alpine areas, and are thought to play a quasimycorrhizal role. It is not known, however, whether they precede or arrive with their hosts. Previously reported enzymatic abilities of Phialoce...
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Canadian Science Publishing
2011
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Online Access: | http://dx.doi.org/10.1139/b11-023 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b11-023 http://www.nrcresearchpress.com/doi/pdf/10.1139/b11-023 |
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crcansciencepubl:10.1139/b11-023 2024-04-28T08:11:15+00:00 Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes Day, Melissa J. Currah, Randolph S. 2011 http://dx.doi.org/10.1139/b11-023 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b11-023 http://www.nrcresearchpress.com/doi/pdf/10.1139/b11-023 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Botany volume 89, issue 5, page 349-359 ISSN 1916-2790 1916-2804 Plant Science Ecology Ecology, Evolution, Behavior and Systematics journal-article 2011 crcansciencepubl https://doi.org/10.1139/b11-023 2024-04-09T06:56:31Z Dark septate endophytes (DSEs) live asymptomatically in the roots of vascular plants, are common in arctic and alpine areas, and are thought to play a quasimycorrhizal role. It is not known, however, whether they precede or arrive with their hosts. Previously reported enzymatic abilities of Phialocephala fortinii suggest that DSEs can live on organic debris in the soil, but there is little direct or experimental evidence for this. Phialocephala fortinii , Leptodontidium orchidicola , Cadophora melinii , Cadophora luteo-olivacea , and Lecythophora sp. were inoculated onto autoclaved Hylocomium splendens gametophytes and incubated for 3 months to determine if they degrade this organic material based on observations made using light and scanning electron microscopy. All fungi were able to colonize the bryophyte tissue to some extent. Lecythophora sp. and L. orchidicola penetrated cells by forming bore holes. Cadophora luteo-olivacea and P. fortinii were also observed inside cells, but bore holes through bryophyte cell walls were not observed. Cadophora melinii sporulated and grew abundantly on the surface of gametophytes but did not appear to penetrate cell walls. Phialocephala fortinii and L. orchidicola formed sclerotia in the gametophytes similar to those formed in roots. These results suggest that DSE fungi can persist and produce propagules, i.e., sclerotia and conidia, in the absence of host roots. These observations support the hypothesis that DSE fungi are able to precede their hosts during primary succession events. Article in Journal/Newspaper Arctic Canadian Science Publishing Botany 89 5 349 359 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics Day, Melissa J. Currah, Randolph S. Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
topic_facet |
Plant Science Ecology Ecology, Evolution, Behavior and Systematics |
description |
Dark septate endophytes (DSEs) live asymptomatically in the roots of vascular plants, are common in arctic and alpine areas, and are thought to play a quasimycorrhizal role. It is not known, however, whether they precede or arrive with their hosts. Previously reported enzymatic abilities of Phialocephala fortinii suggest that DSEs can live on organic debris in the soil, but there is little direct or experimental evidence for this. Phialocephala fortinii , Leptodontidium orchidicola , Cadophora melinii , Cadophora luteo-olivacea , and Lecythophora sp. were inoculated onto autoclaved Hylocomium splendens gametophytes and incubated for 3 months to determine if they degrade this organic material based on observations made using light and scanning electron microscopy. All fungi were able to colonize the bryophyte tissue to some extent. Lecythophora sp. and L. orchidicola penetrated cells by forming bore holes. Cadophora luteo-olivacea and P. fortinii were also observed inside cells, but bore holes through bryophyte cell walls were not observed. Cadophora melinii sporulated and grew abundantly on the surface of gametophytes but did not appear to penetrate cell walls. Phialocephala fortinii and L. orchidicola formed sclerotia in the gametophytes similar to those formed in roots. These results suggest that DSE fungi can persist and produce propagules, i.e., sclerotia and conidia, in the absence of host roots. These observations support the hypothesis that DSE fungi are able to precede their hosts during primary succession events. |
format |
Article in Journal/Newspaper |
author |
Day, Melissa J. Currah, Randolph S. |
author_facet |
Day, Melissa J. Currah, Randolph S. |
author_sort |
Day, Melissa J. |
title |
Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
title_short |
Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
title_full |
Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
title_fullStr |
Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
title_full_unstemmed |
Role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
title_sort |
role of selected dark septate endophyte species and other hyphomycetes as saprobes on moss gametophytes |
publisher |
Canadian Science Publishing |
publishDate |
2011 |
url |
http://dx.doi.org/10.1139/b11-023 http://www.nrcresearchpress.com/doi/full-xml/10.1139/b11-023 http://www.nrcresearchpress.com/doi/pdf/10.1139/b11-023 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Botany volume 89, issue 5, page 349-359 ISSN 1916-2790 1916-2804 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b11-023 |
container_title |
Botany |
container_volume |
89 |
container_issue |
5 |
container_start_page |
349 |
op_container_end_page |
359 |
_version_ |
1797578756172283904 |