Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer
Mycorrhizal root nodules occur in the conifer families Araucariaceae, Podocarpaceae, and Sciadopityaceae. Although the fossil record of these families can be traced back into the early Mesozoic, the oldest fossil evidence of root nodules previously came from the Cretaceous. Here we report on cellula...
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ftpubmed:oai:pubmedcentral.nih.gov:3158208 2023-05-15T13:52:06+02:00 Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer Schwendemann, Andrew B. Decombeix, Anne-Laure Taylor, Thomas N. Taylor, Edith L. Krings, Michael 2011-08-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3158208 http://www.ncbi.nlm.nih.gov/pubmed/21808011 https://doi.org/10.1073/pnas.1110677108 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3158208 http://www.ncbi.nlm.nih.gov/pubmed/21808011 http://dx.doi.org/10.1073/pnas.1110677108 Biological Sciences Text 2011 ftpubmed https://doi.org/10.1073/pnas.1110677108 2013-09-03T18:47:06Z Mycorrhizal root nodules occur in the conifer families Araucariaceae, Podocarpaceae, and Sciadopityaceae. Although the fossil record of these families can be traced back into the early Mesozoic, the oldest fossil evidence of root nodules previously came from the Cretaceous. Here we report on cellularly preserved root nodules of the early conifer Notophytum from Middle Triassic permineralized peat of Antarctica. These fossil root nodules contain fungal arbuscules, hyphal coils, and vesicles in their cortex. Numerous glomoid-type spores are found in the peat matrix surrounding the nodules. This discovery indicates that mutualistic associations between conifer root nodules and arbuscular mycorrhizal fungi date back to at least the early Mesozoic, the period during which most of the modern conifer families first appeared. Notophytum root nodules predate the next known appearance of this association by 100 million years, indicating that this specialized form of mycorrhizal symbiosis has ancient origins. Text Antarc* Antarctica PubMed Central (PMC) Proceedings of the National Academy of Sciences 108 33 13630 13634 |
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Biological Sciences Schwendemann, Andrew B. Decombeix, Anne-Laure Taylor, Thomas N. Taylor, Edith L. Krings, Michael Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
topic_facet |
Biological Sciences |
description |
Mycorrhizal root nodules occur in the conifer families Araucariaceae, Podocarpaceae, and Sciadopityaceae. Although the fossil record of these families can be traced back into the early Mesozoic, the oldest fossil evidence of root nodules previously came from the Cretaceous. Here we report on cellularly preserved root nodules of the early conifer Notophytum from Middle Triassic permineralized peat of Antarctica. These fossil root nodules contain fungal arbuscules, hyphal coils, and vesicles in their cortex. Numerous glomoid-type spores are found in the peat matrix surrounding the nodules. This discovery indicates that mutualistic associations between conifer root nodules and arbuscular mycorrhizal fungi date back to at least the early Mesozoic, the period during which most of the modern conifer families first appeared. Notophytum root nodules predate the next known appearance of this association by 100 million years, indicating that this specialized form of mycorrhizal symbiosis has ancient origins. |
format |
Text |
author |
Schwendemann, Andrew B. Decombeix, Anne-Laure Taylor, Thomas N. Taylor, Edith L. Krings, Michael |
author_facet |
Schwendemann, Andrew B. Decombeix, Anne-Laure Taylor, Thomas N. Taylor, Edith L. Krings, Michael |
author_sort |
Schwendemann, Andrew B. |
title |
Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
title_short |
Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
title_full |
Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
title_fullStr |
Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
title_full_unstemmed |
Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer |
title_sort |
morphological and functional stasis in mycorrhizal root nodules as exhibited by a triassic conifer |
publisher |
National Academy of Sciences |
publishDate |
2011 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3158208 http://www.ncbi.nlm.nih.gov/pubmed/21808011 https://doi.org/10.1073/pnas.1110677108 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3158208 http://www.ncbi.nlm.nih.gov/pubmed/21808011 http://dx.doi.org/10.1073/pnas.1110677108 |
op_doi |
https://doi.org/10.1073/pnas.1110677108 |
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Proceedings of the National Academy of Sciences |
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108 |
container_issue |
33 |
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13630 |
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13634 |
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1766256331803590656 |