Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity
Silver fir presents a great hierarchised architecture with a strict monopodial development (Massart's architectural model). Moreover silver fir presents neither polycyclism nor immediate branching (often involved in the plastic response of primary growth). Despite these limitations, silver firs present a large range of distribution: from Central Europe to Mediterranean mountains. The aim of this poster is to test the hypothesis that silver firs offset this limitation with a strong plasticity at the annual shoot scale and on needle morphology. The study was done in Mont Ventoux, a French Mediterranean mountain which provides contrasted forest environments in terms of elevation and with a marked summer drought. Quantitative traits of annual shoots of 2 years old branches (length, diameter and number of needles, dry mass) and needles (surface and dry mass) where recorded on 80 saplings growing in different light environments. Effects of tree size and architectural position of annual shoot within tree crown on measured traits were higher than any environmental fluctuation. These morphogenetic gradients are consistent with the concept of physiological age of meristems (Barthélémy & Caraglio 2007): huge effect of tree development, branching order and position. All studied traits present a significant plasticity which may be implies in the success of silver firs in the studied site. No clear hierarchy was found between the phenotypic plasticity of annual shoot plasticity and the one of needles. We can suggest that all measured traits act simultaneously during tree development and in response to environmental fluctuations ('a variational module' sensu Wagner et al 2007). (Texte intégral)
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Subjects: | U10 - Informatique, mathématiques et statistiques, K10 - Production forestière, F62 - Physiologie végétale - Croissance et développement, F50 - Anatomie et morphologie des plantes, Abies alba, adaptation, http://aims.fao.org/aos/agrovoc/c_11, http://aims.fao.org/aos/agrovoc/c_117, http://aims.fao.org/aos/agrovoc/c_6272, http://aims.fao.org/aos/agrovoc/c_3081, |
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dig-cirad-fr-5619672024-07-17T08:03:54Z http://agritrop.cirad.fr/561967/ http://agritrop.cirad.fr/561967/ Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity. Taugourdeau Olivier, Sabatier Sylvie-Annabel, Caraglio Yves, Barthélémy Daniel. 2011. In : IBC2011. XVIII International Botanical Congress, 23-30 July 2011, Melbourne, Australia. s.l. : s.n., Résumé, 560. International Botanical Congress. 18, Melbourne, Australie, 23 Juillet 2011/30 Juillet 2011.http://www.ibc2011.com/downloads/IBC2011_Abstract_Book.pdf <http://www.ibc2011.com/downloads/IBC2011_Abstract_Book.pdf> Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity Taugourdeau, Olivier Sabatier, Sylvie-Annabel Caraglio, Yves Barthélémy, Daniel eng 2011 s.n. IBC2011. XVIII International Botanical Congress, 23-30 July 2011, Melbourne, Australia U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 Provence-Alpes-Côte d'Azur France http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 Silver fir presents a great hierarchised architecture with a strict monopodial development (Massart's architectural model). Moreover silver fir presents neither polycyclism nor immediate branching (often involved in the plastic response of primary growth). Despite these limitations, silver firs present a large range of distribution: from Central Europe to Mediterranean mountains. The aim of this poster is to test the hypothesis that silver firs offset this limitation with a strong plasticity at the annual shoot scale and on needle morphology. The study was done in Mont Ventoux, a French Mediterranean mountain which provides contrasted forest environments in terms of elevation and with a marked summer drought. Quantitative traits of annual shoots of 2 years old branches (length, diameter and number of needles, dry mass) and needles (surface and dry mass) where recorded on 80 saplings growing in different light environments. Effects of tree size and architectural position of annual shoot within tree crown on measured traits were higher than any environmental fluctuation. These morphogenetic gradients are consistent with the concept of physiological age of meristems (Barthélémy & Caraglio 2007): huge effect of tree development, branching order and position. All studied traits present a significant plasticity which may be implies in the success of silver firs in the studied site. No clear hierarchy was found between the phenotypic plasticity of annual shoot plasticity and the one of needles. We can suggest that all measured traits act simultaneously during tree development and in response to environmental fluctuations ('a variational module' sensu Wagner et al 2007). (Texte intégral) conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/561967/1/document_561967.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html http://www.ibc2011.com/downloads/IBC2011_Abstract_Book.pdf info:eu-repo/semantics/altIdentifier/purl/http://www.ibc2011.com/downloads/IBC2011_Abstract_Book.pdf |
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U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 |
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U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 Taugourdeau, Olivier Sabatier, Sylvie-Annabel Caraglio, Yves Barthélémy, Daniel Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
description |
Silver fir presents a great hierarchised architecture with a strict monopodial development (Massart's architectural model). Moreover silver fir presents neither polycyclism nor immediate branching (often involved in the plastic response of primary growth). Despite these limitations, silver firs present a large range of distribution: from Central Europe to Mediterranean mountains. The aim of this poster is to test the hypothesis that silver firs offset this limitation with a strong plasticity at the annual shoot scale and on needle morphology. The study was done in Mont Ventoux, a French Mediterranean mountain which provides contrasted forest environments in terms of elevation and with a marked summer drought. Quantitative traits of annual shoots of 2 years old branches (length, diameter and number of needles, dry mass) and needles (surface and dry mass) where recorded on 80 saplings growing in different light environments. Effects of tree size and architectural position of annual shoot within tree crown on measured traits were higher than any environmental fluctuation. These morphogenetic gradients are consistent with the concept of physiological age of meristems (Barthélémy & Caraglio 2007): huge effect of tree development, branching order and position. All studied traits present a significant plasticity which may be implies in the success of silver firs in the studied site. No clear hierarchy was found between the phenotypic plasticity of annual shoot plasticity and the one of needles. We can suggest that all measured traits act simultaneously during tree development and in response to environmental fluctuations ('a variational module' sensu Wagner et al 2007). (Texte intégral) |
format |
conference_item |
topic_facet |
U10 - Informatique, mathématiques et statistiques K10 - Production forestière F62 - Physiologie végétale - Croissance et développement F50 - Anatomie et morphologie des plantes Abies alba adaptation http://aims.fao.org/aos/agrovoc/c_11 http://aims.fao.org/aos/agrovoc/c_117 http://aims.fao.org/aos/agrovoc/c_6272 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Taugourdeau, Olivier Sabatier, Sylvie-Annabel Caraglio, Yves Barthélémy, Daniel |
author_facet |
Taugourdeau, Olivier Sabatier, Sylvie-Annabel Caraglio, Yves Barthélémy, Daniel |
author_sort |
Taugourdeau, Olivier |
title |
Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
title_short |
Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
title_full |
Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
title_fullStr |
Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
title_full_unstemmed |
Morphogenetic gradients in silver firs (Abies alba Mill.) and their plasticity |
title_sort |
morphogenetic gradients in silver firs (abies alba mill.) and their plasticity |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/561967/ http://agritrop.cirad.fr/561967/1/document_561967.pdf |
work_keys_str_mv |
AT taugourdeauolivier morphogeneticgradientsinsilverfirsabiesalbamillandtheirplasticity AT sabatiersylvieannabel morphogeneticgradientsinsilverfirsabiesalbamillandtheirplasticity AT caraglioyves morphogeneticgradientsinsilverfirsabiesalbamillandtheirplasticity AT barthelemydaniel morphogeneticgradientsinsilverfirsabiesalbamillandtheirplasticity |
_version_ |
1806036943441494016 |