BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA
The Glossopteridales are an extinct group of seed plants that dominated Gondwanan floras during the Permian. Their remains are found across a wide range of habitats and paleolatitudes, and it is particularly interesting to understand the anatomical characteristics that might have enabled such an ext...
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crbrillap:10.1163/22941932-20160146 2023-07-02T03:30:31+02:00 BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA Decombeix, Anne-Laure Taylor, Edith L. Taylor, Thomas N. 2016 http://dx.doi.org/10.1163/22941932-20160146 https://brill.com/view/journals/iawa/37/3/article-p444_7.xml https://brill.com/downloadpdf/journals/iawa/37/3/article-p444_7.xml unknown Brill IAWA Journal volume 37, issue 3, page 444-458 ISSN 0928-1541 2294-1932 Forestry Plant Science journal-article 2016 crbrillap https://doi.org/10.1163/22941932-20160146 2023-06-09T14:44:47Z The Glossopteridales are an extinct group of seed plants that dominated Gondwanan floras during the Permian. Their remains are found across a wide range of habitats and paleolatitudes, and it is particularly interesting to understand the anatomical characteristics that might have enabled such an extensive distribution. Here, we document for the first time the bark anatomy of high-latitude glossopteridalean trees using peels and thin sections made from a Late Permian trunk from Skaar Ridge, Antarctica. The bark is 3 cm thick. The secondary phloem is composed of sieve cells, axial and ray parenchyma, and fibers arranged in discontinuous unicellular tangential layers. The outer bark is a rhytidome, with numerous alternating layers of periderm and non-conducting secondary phloem showing some proliferation of the axial parenchyma. Successive periderms mostly run parallel to the cambium, with some longitudinal undulation and rare connections between two periderms. A similar anatomy was observed in bark fragments found isolated in the matrix or closely associated with large glossopterid stems or roots. The anatomy of the Skaar Ridge specimens shows that Antarctic Glossopteridales had a relatively thick, probably stringy bark. The retention of a significant amount of insulating dead bark tissue on the trunk likely provided protection of the cambium, conducting secondary phloem, and potential latent buds against biotic and abiotic environmental hazards (fire, frost, scalding, insects, etc.) and may have contributed to the extensive paleolatitudinal distribution of the Glossopteridales during the Permian. Article in Journal/Newspaper Antarc* Antarctic Antarctica Brill (via Crossref) Antarctic Skaar Ridge ENVELOPE(163.250,163.250,-84.817,-84.817) IAWA Journal 37 3 444 458 |
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Open Polar |
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Brill (via Crossref) |
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unknown |
topic |
Forestry Plant Science |
spellingShingle |
Forestry Plant Science Decombeix, Anne-Laure Taylor, Edith L. Taylor, Thomas N. BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
topic_facet |
Forestry Plant Science |
description |
The Glossopteridales are an extinct group of seed plants that dominated Gondwanan floras during the Permian. Their remains are found across a wide range of habitats and paleolatitudes, and it is particularly interesting to understand the anatomical characteristics that might have enabled such an extensive distribution. Here, we document for the first time the bark anatomy of high-latitude glossopteridalean trees using peels and thin sections made from a Late Permian trunk from Skaar Ridge, Antarctica. The bark is 3 cm thick. The secondary phloem is composed of sieve cells, axial and ray parenchyma, and fibers arranged in discontinuous unicellular tangential layers. The outer bark is a rhytidome, with numerous alternating layers of periderm and non-conducting secondary phloem showing some proliferation of the axial parenchyma. Successive periderms mostly run parallel to the cambium, with some longitudinal undulation and rare connections between two periderms. A similar anatomy was observed in bark fragments found isolated in the matrix or closely associated with large glossopterid stems or roots. The anatomy of the Skaar Ridge specimens shows that Antarctic Glossopteridales had a relatively thick, probably stringy bark. The retention of a significant amount of insulating dead bark tissue on the trunk likely provided protection of the cambium, conducting secondary phloem, and potential latent buds against biotic and abiotic environmental hazards (fire, frost, scalding, insects, etc.) and may have contributed to the extensive paleolatitudinal distribution of the Glossopteridales during the Permian. |
format |
Article in Journal/Newspaper |
author |
Decombeix, Anne-Laure Taylor, Edith L. Taylor, Thomas N. |
author_facet |
Decombeix, Anne-Laure Taylor, Edith L. Taylor, Thomas N. |
author_sort |
Decombeix, Anne-Laure |
title |
BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
title_short |
BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
title_full |
BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
title_fullStr |
BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
title_full_unstemmed |
BARK ANATOMY OF LATE PERMIAN GLOSSOPTERID TREES FROM ANTARCTICA |
title_sort |
bark anatomy of late permian glossopterid trees from antarctica |
publisher |
Brill |
publishDate |
2016 |
url |
http://dx.doi.org/10.1163/22941932-20160146 https://brill.com/view/journals/iawa/37/3/article-p444_7.xml https://brill.com/downloadpdf/journals/iawa/37/3/article-p444_7.xml |
long_lat |
ENVELOPE(163.250,163.250,-84.817,-84.817) |
geographic |
Antarctic Skaar Ridge |
geographic_facet |
Antarctic Skaar Ridge |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
IAWA Journal volume 37, issue 3, page 444-458 ISSN 0928-1541 2294-1932 |
op_doi |
https://doi.org/10.1163/22941932-20160146 |
container_title |
IAWA Journal |
container_volume |
37 |
container_issue |
3 |
container_start_page |
444 |
op_container_end_page |
458 |
_version_ |
1770274705295540224 |