Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica
International audience Background and Aims: Investigating the biology of trees that were growing at high latitudes during warmer geological periods is key to understanding the functioning of both past and future forest ecosystems. The aim of this study is to report the first co-occurrence of epicorm...
Published in: | Annals of Botany |
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Online Access: | https://hal.umontpellier.fr/hal-01801198 https://hal.umontpellier.fr/hal-01801198/document https://hal.umontpellier.fr/hal-01801198/file/Decombeix%20Serbet%20Taylor%202018%20Ann%20Bot%20postprint%20for%20HAL.pdf https://doi.org/10.1093/aob/mcx199 |
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ftunimontpellier:oai:HAL:hal-01801198v1 2024-02-11T09:58:43+01:00 Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica Decombeix, Anne-Laure Serbet, Rudolph Taylor, Edith Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Department of Ecology and Evolutionary Biology University of Kansas Lawrence (KU) 2018 https://hal.umontpellier.fr/hal-01801198 https://hal.umontpellier.fr/hal-01801198/document https://hal.umontpellier.fr/hal-01801198/file/Decombeix%20Serbet%20Taylor%202018%20Ann%20Bot%20postprint%20for%20HAL.pdf https://doi.org/10.1093/aob/mcx199 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcx199 hal-01801198 https://hal.umontpellier.fr/hal-01801198 https://hal.umontpellier.fr/hal-01801198/document https://hal.umontpellier.fr/hal-01801198/file/Decombeix%20Serbet%20Taylor%202018%20Ann%20Bot%20postprint%20for%20HAL.pdf doi:10.1093/aob/mcx199 info:eu-repo/semantics/OpenAccess ISSN: 0305-7364 EISSN: 1095-8290 Annals of Botany https://hal.umontpellier.fr/hal-01801198 Annals of Botany, 2018, 121 (4), pp.681 - 689. ⟨10.1093/aob/mcx199⟩ Tree fossil Triassic Antarctica Anatomy epicormics wood frost ring growth high latitude Mesozoic gymnosperm [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2018 ftunimontpellier https://doi.org/10.1093/aob/mcx199 2024-01-23T23:38:45Z International audience Background and Aims: Investigating the biology of trees that were growing at high latitudes during warmer geological periods is key to understanding the functioning of both past and future forest ecosystems. The aim of this study is to report the first co-occurrence of epicormic shoots and traumatic growth zones in fossil trees from the Triassic of Antarctica and to discuss their biological and environmental implications.Methods : Permineralized woods bearing scars of epicormic shoots were collected from the Triassic Fremouw Formation in Gordon Valley, Central Transantarctic Mountains, Antarctica in 2010. Samples from different portions of three specimens were prepared using standard thin section and hydrofluoric (HF) acid peel techniques, and anatomical details were studied in transmitted light.Key Results: The fossil woods represent the outer part of trunks, with at least 40 growth rings that are 0.2–4.8 mm in width. Anatomical comparisons suggest that they represent a new tree taxon for the Triassic of Antarctica. Numerous small epicormic shoots can be seen crossing the wood almost horizontally and are locally branched. Each specimen also contains several occurrences of traumatic growth zones located in the early wood, in the cells produced either at the very start of the growing season or slightly later.Conclusions: This is the first report of epicormic shoots and traumatic growth zones in the wood of a Triassic tree from Antarctica. Their co-occurrence indicates that these trees from Gordon Valley were subjected to environmental stresses not seen in Triassic trees previously described from this region. This suggests that they had a different biology and/or were growing in a different habitat, which offers a new glimpse into the diversity of high-latitude trees in the Triassic greenhouse climate. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Université de Montpellier: HAL East Antarctica Gordon Valley ENVELOPE(164.000,164.000,-84.383,-84.383) Transantarctic Mountains Annals of Botany 121 4 681 689 |
institution |
Open Polar |
collection |
Université de Montpellier: HAL |
op_collection_id |
ftunimontpellier |
language |
English |
topic |
Tree fossil Triassic Antarctica Anatomy epicormics wood frost ring growth high latitude Mesozoic gymnosperm [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
Tree fossil Triassic Antarctica Anatomy epicormics wood frost ring growth high latitude Mesozoic gymnosperm [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Decombeix, Anne-Laure Serbet, Rudolph Taylor, Edith Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
topic_facet |
Tree fossil Triassic Antarctica Anatomy epicormics wood frost ring growth high latitude Mesozoic gymnosperm [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience Background and Aims: Investigating the biology of trees that were growing at high latitudes during warmer geological periods is key to understanding the functioning of both past and future forest ecosystems. The aim of this study is to report the first co-occurrence of epicormic shoots and traumatic growth zones in fossil trees from the Triassic of Antarctica and to discuss their biological and environmental implications.Methods : Permineralized woods bearing scars of epicormic shoots were collected from the Triassic Fremouw Formation in Gordon Valley, Central Transantarctic Mountains, Antarctica in 2010. Samples from different portions of three specimens were prepared using standard thin section and hydrofluoric (HF) acid peel techniques, and anatomical details were studied in transmitted light.Key Results: The fossil woods represent the outer part of trunks, with at least 40 growth rings that are 0.2–4.8 mm in width. Anatomical comparisons suggest that they represent a new tree taxon for the Triassic of Antarctica. Numerous small epicormic shoots can be seen crossing the wood almost horizontally and are locally branched. Each specimen also contains several occurrences of traumatic growth zones located in the early wood, in the cells produced either at the very start of the growing season or slightly later.Conclusions: This is the first report of epicormic shoots and traumatic growth zones in the wood of a Triassic tree from Antarctica. Their co-occurrence indicates that these trees from Gordon Valley were subjected to environmental stresses not seen in Triassic trees previously described from this region. This suggests that they had a different biology and/or were growing in a different habitat, which offers a new glimpse into the diversity of high-latitude trees in the Triassic greenhouse climate. |
author2 |
Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) Department of Ecology and Evolutionary Biology University of Kansas Lawrence (KU) |
format |
Article in Journal/Newspaper |
author |
Decombeix, Anne-Laure Serbet, Rudolph Taylor, Edith |
author_facet |
Decombeix, Anne-Laure Serbet, Rudolph Taylor, Edith |
author_sort |
Decombeix, Anne-Laure |
title |
Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
title_short |
Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
title_full |
Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
title_fullStr |
Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
title_full_unstemmed |
Under pressure? Epicormic shoots and traumatic growth zones in high-latitude Triassic trees from East Antarctica |
title_sort |
under pressure? epicormic shoots and traumatic growth zones in high-latitude triassic trees from east antarctica |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.umontpellier.fr/hal-01801198 https://hal.umontpellier.fr/hal-01801198/document https://hal.umontpellier.fr/hal-01801198/file/Decombeix%20Serbet%20Taylor%202018%20Ann%20Bot%20postprint%20for%20HAL.pdf https://doi.org/10.1093/aob/mcx199 |
long_lat |
ENVELOPE(164.000,164.000,-84.383,-84.383) |
geographic |
East Antarctica Gordon Valley Transantarctic Mountains |
geographic_facet |
East Antarctica Gordon Valley Transantarctic Mountains |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
ISSN: 0305-7364 EISSN: 1095-8290 Annals of Botany https://hal.umontpellier.fr/hal-01801198 Annals of Botany, 2018, 121 (4), pp.681 - 689. ⟨10.1093/aob/mcx199⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcx199 hal-01801198 https://hal.umontpellier.fr/hal-01801198 https://hal.umontpellier.fr/hal-01801198/document https://hal.umontpellier.fr/hal-01801198/file/Decombeix%20Serbet%20Taylor%202018%20Ann%20Bot%20postprint%20for%20HAL.pdf doi:10.1093/aob/mcx199 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/aob/mcx199 |
container_title |
Annals of Botany |
container_volume |
121 |
container_issue |
4 |
container_start_page |
681 |
op_container_end_page |
689 |
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1790594444938969088 |