Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions
Taro (Colocasia esculenta (L.) Schott) is a staple food and represents an important food security role in most tropical regions. It is, unfortunately, susceptible to prolonged drought conditions. Abscisic acid (ABA) is a well-documented stress-induced phytohormone that tolerant crops usually accumulate in leaves to induce stomatal closure, preventing water loss through inhibition of transpiration. Hitherto, exists very scarce information regarding the ABA role in taro response to drought. Here, we determined the ABA content in the shoots and corms of taro subjected to seven months of water scarcity and linked ABA to other drought resilience traits, including carbon isotopic discrimination (Δ13C), oxalic acid (OA), chlorophyll content index (CCI), water use efficiency (WUE), and biomass (B). The Δ13C-shoot content showed partially open stomata in all accessions, and significant correlation with Δ13C-corm, CCI, and WUE. The osmotically active OA-shoot decrease seemed not to interfere with the stomatal aperture. The tolerant accessions subjected to drought stress had higher B-corm, ABA-shoot, Δ13C-shoot, CCI, OA, and WUE. However, the observed under drought conditions increase of ABA in the shoots, and its decrease in the corms were not significantly correlated, nor with other traits, suggesting that ABA was not the main regulator of taro physiological processes under stress. The information gained should be considered in breeding programs to predict taro's response to climate change.
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Subjects: | F60 - Physiologie et biochimie végétale, H50 - Troubles divers des plantes, F30 - Génétique et amélioration des plantes, Colocasia esculenta, réponse de la plante, ABA, stress dû à la sécheresse, résistance à la sécheresse, tolérance à la sécheresse, indicateur biologique, adaptation aux changements climatiques, http://aims.fao.org/aos/agrovoc/c_1765, http://aims.fao.org/aos/agrovoc/c_25446, http://aims.fao.org/aos/agrovoc/c_3, http://aims.fao.org/aos/agrovoc/c_24993, http://aims.fao.org/aos/agrovoc/c_2392, http://aims.fao.org/aos/agrovoc/c_14914, http://aims.fao.org/aos/agrovoc/c_25632, http://aims.fao.org/aos/agrovoc/c_1374567058134, |
Online Access: | http://agritrop.cirad.fr/597440/ http://agritrop.cirad.fr/597440/1/Involvement%20of%20Abscisic%20Acid%20and%20Other%20Stress%20Indicators%20in%20Taro%20Gouveia2020.pdf |
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dig-cirad-fr-5974402024-01-29T03:16:47Z http://agritrop.cirad.fr/597440/ http://agritrop.cirad.fr/597440/ Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions. Gouveia Carla S.S., Ganança José F.T., Slaski Jan, Lebot Vincent, Pinheiro de Carvalho Miguel A.A.. 2020. Acta Physiologiae Plantarum, 42:173, 11 p.https://doi.org/10.1007/s11738-020-03162-5 <https://doi.org/10.1007/s11738-020-03162-5> Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions Gouveia, Carla S.S. Ganança, José F.T. Slaski, Jan Lebot, Vincent Pinheiro de Carvalho, Miguel A.A. eng 2020 Acta Physiologiae Plantarum F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 Taro (Colocasia esculenta (L.) Schott) is a staple food and represents an important food security role in most tropical regions. It is, unfortunately, susceptible to prolonged drought conditions. Abscisic acid (ABA) is a well-documented stress-induced phytohormone that tolerant crops usually accumulate in leaves to induce stomatal closure, preventing water loss through inhibition of transpiration. Hitherto, exists very scarce information regarding the ABA role in taro response to drought. Here, we determined the ABA content in the shoots and corms of taro subjected to seven months of water scarcity and linked ABA to other drought resilience traits, including carbon isotopic discrimination (Δ13C), oxalic acid (OA), chlorophyll content index (CCI), water use efficiency (WUE), and biomass (B). The Δ13C-shoot content showed partially open stomata in all accessions, and significant correlation with Δ13C-corm, CCI, and WUE. The osmotically active OA-shoot decrease seemed not to interfere with the stomatal aperture. The tolerant accessions subjected to drought stress had higher B-corm, ABA-shoot, Δ13C-shoot, CCI, OA, and WUE. However, the observed under drought conditions increase of ABA in the shoots, and its decrease in the corms were not significantly correlated, nor with other traits, suggesting that ABA was not the main regulator of taro physiological processes under stress. The information gained should be considered in breeding programs to predict taro's response to climate change. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/597440/1/Involvement%20of%20Abscisic%20Acid%20and%20Other%20Stress%20Indicators%20in%20Taro%20Gouveia2020.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1007/s11738-020-03162-5 10.1007/s11738-020-03162-5 info:eu-repo/semantics/altIdentifier/doi/10.1007/s11738-020-03162-5 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s11738-020-03162-5 info:eu-repo/grantAgreement/EC///// info:eu-repo/grantAgreement/ERDF///// |
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F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 |
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F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 Gouveia, Carla S.S. Ganança, José F.T. Slaski, Jan Lebot, Vincent Pinheiro de Carvalho, Miguel A.A. Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
description |
Taro (Colocasia esculenta (L.) Schott) is a staple food and represents an important food security role in most tropical regions. It is, unfortunately, susceptible to prolonged drought conditions. Abscisic acid (ABA) is a well-documented stress-induced phytohormone that tolerant crops usually accumulate in leaves to induce stomatal closure, preventing water loss through inhibition of transpiration. Hitherto, exists very scarce information regarding the ABA role in taro response to drought. Here, we determined the ABA content in the shoots and corms of taro subjected to seven months of water scarcity and linked ABA to other drought resilience traits, including carbon isotopic discrimination (Δ13C), oxalic acid (OA), chlorophyll content index (CCI), water use efficiency (WUE), and biomass (B). The Δ13C-shoot content showed partially open stomata in all accessions, and significant correlation with Δ13C-corm, CCI, and WUE. The osmotically active OA-shoot decrease seemed not to interfere with the stomatal aperture. The tolerant accessions subjected to drought stress had higher B-corm, ABA-shoot, Δ13C-shoot, CCI, OA, and WUE. However, the observed under drought conditions increase of ABA in the shoots, and its decrease in the corms were not significantly correlated, nor with other traits, suggesting that ABA was not the main regulator of taro physiological processes under stress. The information gained should be considered in breeding programs to predict taro's response to climate change. |
format |
article |
topic_facet |
F60 - Physiologie et biochimie végétale H50 - Troubles divers des plantes F30 - Génétique et amélioration des plantes Colocasia esculenta réponse de la plante ABA stress dû à la sécheresse résistance à la sécheresse tolérance à la sécheresse indicateur biologique adaptation aux changements climatiques http://aims.fao.org/aos/agrovoc/c_1765 http://aims.fao.org/aos/agrovoc/c_25446 http://aims.fao.org/aos/agrovoc/c_3 http://aims.fao.org/aos/agrovoc/c_24993 http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_25632 http://aims.fao.org/aos/agrovoc/c_1374567058134 |
author |
Gouveia, Carla S.S. Ganança, José F.T. Slaski, Jan Lebot, Vincent Pinheiro de Carvalho, Miguel A.A. |
author_facet |
Gouveia, Carla S.S. Ganança, José F.T. Slaski, Jan Lebot, Vincent Pinheiro de Carvalho, Miguel A.A. |
author_sort |
Gouveia, Carla S.S. |
title |
Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
title_short |
Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
title_full |
Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
title_fullStr |
Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
title_full_unstemmed |
Involvement of abscisic acid and other stress indicators in taro (Colocasia esculenta (L.) Schott) response to drought conditions |
title_sort |
involvement of abscisic acid and other stress indicators in taro (colocasia esculenta (l.) schott) response to drought conditions |
url |
http://agritrop.cirad.fr/597440/ http://agritrop.cirad.fr/597440/1/Involvement%20of%20Abscisic%20Acid%20and%20Other%20Stress%20Indicators%20in%20Taro%20Gouveia2020.pdf |
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