Coordinated plasticity maintains hydraulic safety in sunflower leaves
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://dx.doi.org/10.1111/pce.13335 http://www.locus.ufv.br/handle/123456789/24467 |
Resumo: | The xylem cavitation threshold water potential establishes a hydraulic limit on the ability of woody species to survive in water‐limiting environments, but herbs may be more plastic in terms of their ability to adapt to drying conditions. Here, we examined the capacity of sunflower (Helianthus annuus L.) leaves to adapt to reduced water availability by modifying the sensitivity of xylem and stomata to soil water deficit. We found that sunflower plants grown under water‐limited conditions significantly adjusted leaf osmotic potential, which was linked to a prolongation of stomatal opening as soil dried and a reduced sensitivity of photosynthesis to water‐stress‐induced damage. At the same time, the vulnerability of midrib xylem to water‐stress‐induced cavitation was observed to be highly responsive to growth conditions, with water‐limited plants producing conduits with thicker cell walls which were more resistant to xylem cavitation. Coordinated plasticity in osmotic potential and xylem vulnerability enabled water‐limited sunflowers to safely extract water from the soil, while protecting leaf xylem against embolism. High plasticity in sunflower xylem contrasts with data from woody plants and may suggest an alternative strategy in herbs. |
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Cardoso, Amanda A.Brodribb, Timothy J.Lucani, Christopher J.DaMatta, Fábio M.McAdam, Scott A. M.2019-04-11T11:32:24Z2019-04-11T11:32:24Z2018-111365-3040http://dx.doi.org/10.1111/pce.13335http://www.locus.ufv.br/handle/123456789/24467The xylem cavitation threshold water potential establishes a hydraulic limit on the ability of woody species to survive in water‐limiting environments, but herbs may be more plastic in terms of their ability to adapt to drying conditions. Here, we examined the capacity of sunflower (Helianthus annuus L.) leaves to adapt to reduced water availability by modifying the sensitivity of xylem and stomata to soil water deficit. We found that sunflower plants grown under water‐limited conditions significantly adjusted leaf osmotic potential, which was linked to a prolongation of stomatal opening as soil dried and a reduced sensitivity of photosynthesis to water‐stress‐induced damage. At the same time, the vulnerability of midrib xylem to water‐stress‐induced cavitation was observed to be highly responsive to growth conditions, with water‐limited plants producing conduits with thicker cell walls which were more resistant to xylem cavitation. Coordinated plasticity in osmotic potential and xylem vulnerability enabled water‐limited sunflowers to safely extract water from the soil, while protecting leaf xylem against embolism. High plasticity in sunflower xylem contrasts with data from woody plants and may suggest an alternative strategy in herbs.engPlant, Cell & EnvironmentVolume 41, Issue 11, Pages 2515- 2714, November 2018CavitationHerbaceous speciesOsmotic adjustmentStomatal movementXylem vulnerabilityCoordinated plasticity maintains hydraulic safety in sunflower leavesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdftexto completoapplication/pdf762239https://locus.ufv.br//bitstream/123456789/24467/1/artigo.pdf176fa51d26f1830f28d921753c998425MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/24467/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/244672019-04-11 08:34:42.894oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452019-04-11T11:34:42LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
title |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
spellingShingle |
Coordinated plasticity maintains hydraulic safety in sunflower leaves Cardoso, Amanda A. Cavitation Herbaceous species Osmotic adjustment Stomatal movement Xylem vulnerability |
title_short |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
title_full |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
title_fullStr |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
title_full_unstemmed |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
title_sort |
Coordinated plasticity maintains hydraulic safety in sunflower leaves |
author |
Cardoso, Amanda A. |
author_facet |
Cardoso, Amanda A. Brodribb, Timothy J. Lucani, Christopher J. DaMatta, Fábio M. McAdam, Scott A. M. |
author_role |
author |
author2 |
Brodribb, Timothy J. Lucani, Christopher J. DaMatta, Fábio M. McAdam, Scott A. M. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cardoso, Amanda A. Brodribb, Timothy J. Lucani, Christopher J. DaMatta, Fábio M. McAdam, Scott A. M. |
dc.subject.pt-BR.fl_str_mv |
Cavitation Herbaceous species Osmotic adjustment Stomatal movement Xylem vulnerability |
topic |
Cavitation Herbaceous species Osmotic adjustment Stomatal movement Xylem vulnerability |
description |
The xylem cavitation threshold water potential establishes a hydraulic limit on the ability of woody species to survive in water‐limiting environments, but herbs may be more plastic in terms of their ability to adapt to drying conditions. Here, we examined the capacity of sunflower (Helianthus annuus L.) leaves to adapt to reduced water availability by modifying the sensitivity of xylem and stomata to soil water deficit. We found that sunflower plants grown under water‐limited conditions significantly adjusted leaf osmotic potential, which was linked to a prolongation of stomatal opening as soil dried and a reduced sensitivity of photosynthesis to water‐stress‐induced damage. At the same time, the vulnerability of midrib xylem to water‐stress‐induced cavitation was observed to be highly responsive to growth conditions, with water‐limited plants producing conduits with thicker cell walls which were more resistant to xylem cavitation. Coordinated plasticity in osmotic potential and xylem vulnerability enabled water‐limited sunflowers to safely extract water from the soil, while protecting leaf xylem against embolism. High plasticity in sunflower xylem contrasts with data from woody plants and may suggest an alternative strategy in herbs. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-11 |
dc.date.accessioned.fl_str_mv |
2019-04-11T11:32:24Z |
dc.date.available.fl_str_mv |
2019-04-11T11:32:24Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1111/pce.13335 http://www.locus.ufv.br/handle/123456789/24467 |
dc.identifier.issn.none.fl_str_mv |
1365-3040 |
identifier_str_mv |
1365-3040 |
url |
http://dx.doi.org/10.1111/pce.13335 http://www.locus.ufv.br/handle/123456789/24467 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
Volume 41, Issue 11, Pages 2515- 2714, November 2018 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Plant, Cell & Environment |
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Plant, Cell & Environment |
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