Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance
Plant dehydration tolerance confers drought survival in grasses, but the mortality thresholds according to soil water content (SWC), vapour pressure deficit (VPD) and plant–plant interactions are little explored. We compared the dehydration dynamics of leaf meristems, which are the key surviving organs, plant mortality, and recovery of Mediterranean and temperate populations of two perennial grass species, Dactylis glomerata and Festuca arundinacea, grown in monocultures and mixtures under a low-VPD (1.5 kPa) versus a high-VPD drought (2.2 kPa). The lethal drought index (LD50), that is, SWC associated with 50% plant mortality, ranged from 2.87% (ψs = −1.68 MPa) to 2.19% (ψs = −4.47 MPa) and reached the lowest values under the low-VPD drought. Populations of D. glomerata were more dehydration-tolerant (lower LD50), survived and recovered better than F. arundinacea populations. Plant–plant interactions modified dehydration tolerance and improved post-drought recovery in mixtures compared with monocultures. Water content as low as 20.7%–36.1% in leaf meristems allowed 50% of plants to survive. We conclude that meristem dehydration causes plant mortality and that drought acclimation can increase dehydration tolerance. Genetic diversity, acclimation and plant–plant interactions are essential sources of dehydration tolerance variability to consider when predicting drought-induced mortality.
Main Authors: | , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | H50 - Troubles divers des plantes, F60 - Physiologie et biochimie végétale, résistance à la sécheresse, tolérance à la sécheresse, déshydratation, physiologie végétale, Poaceae, Dactylis glomerata, Festuca arundinacea, http://aims.fao.org/aos/agrovoc/c_2392, http://aims.fao.org/aos/agrovoc/c_14914, http://aims.fao.org/aos/agrovoc/c_2162, http://aims.fao.org/aos/agrovoc/c_25189, http://aims.fao.org/aos/agrovoc/c_3354, http://aims.fao.org/aos/agrovoc/c_2101, http://aims.fao.org/aos/agrovoc/c_2869, http://aims.fao.org/aos/agrovoc/c_3081, |
Online Access: | http://agritrop.cirad.fr/603612/ http://agritrop.cirad.fr/603612/7/603612.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-603612 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-6036122024-01-29T04:29:51Z http://agritrop.cirad.fr/603612/ http://agritrop.cirad.fr/603612/ Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance. Barkaoui Karim, Volaire Florence. 2023. Plant, Cell and Environment, 46 (5) : 1489-1503.https://doi.org/10.1111/pce.14543 <https://doi.org/10.1111/pce.14543> Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance Barkaoui, Karim Volaire, Florence eng 2023 Plant, Cell and Environment H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 France http://aims.fao.org/aos/agrovoc/c_3081 Plant dehydration tolerance confers drought survival in grasses, but the mortality thresholds according to soil water content (SWC), vapour pressure deficit (VPD) and plant–plant interactions are little explored. We compared the dehydration dynamics of leaf meristems, which are the key surviving organs, plant mortality, and recovery of Mediterranean and temperate populations of two perennial grass species, Dactylis glomerata and Festuca arundinacea, grown in monocultures and mixtures under a low-VPD (1.5 kPa) versus a high-VPD drought (2.2 kPa). The lethal drought index (LD50), that is, SWC associated with 50% plant mortality, ranged from 2.87% (ψs = −1.68 MPa) to 2.19% (ψs = −4.47 MPa) and reached the lowest values under the low-VPD drought. Populations of D. glomerata were more dehydration-tolerant (lower LD50), survived and recovered better than F. arundinacea populations. Plant–plant interactions modified dehydration tolerance and improved post-drought recovery in mixtures compared with monocultures. Water content as low as 20.7%–36.1% in leaf meristems allowed 50% of plants to survive. We conclude that meristem dehydration causes plant mortality and that drought acclimation can increase dehydration tolerance. Genetic diversity, acclimation and plant–plant interactions are essential sources of dehydration tolerance variability to consider when predicting drought-induced mortality. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/603612/7/603612.pdf text cc_by_nc info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/4.0/ https://doi.org/10.1111/pce.14543 10.1111/pce.14543 info:eu-repo/semantics/altIdentifier/doi/10.1111/pce.14543 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/pce.14543 info:eu-repo/semantics/dataset/purl/https://doi.org/10.6084/m9.figshare.21834459 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 http://aims.fao.org/aos/agrovoc/c_3081 H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 http://aims.fao.org/aos/agrovoc/c_3081 |
spellingShingle |
H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 http://aims.fao.org/aos/agrovoc/c_3081 H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 http://aims.fao.org/aos/agrovoc/c_3081 Barkaoui, Karim Volaire, Florence Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
description |
Plant dehydration tolerance confers drought survival in grasses, but the mortality thresholds according to soil water content (SWC), vapour pressure deficit (VPD) and plant–plant interactions are little explored. We compared the dehydration dynamics of leaf meristems, which are the key surviving organs, plant mortality, and recovery of Mediterranean and temperate populations of two perennial grass species, Dactylis glomerata and Festuca arundinacea, grown in monocultures and mixtures under a low-VPD (1.5 kPa) versus a high-VPD drought (2.2 kPa). The lethal drought index (LD50), that is, SWC associated with 50% plant mortality, ranged from 2.87% (ψs = −1.68 MPa) to 2.19% (ψs = −4.47 MPa) and reached the lowest values under the low-VPD drought. Populations of D. glomerata were more dehydration-tolerant (lower LD50), survived and recovered better than F. arundinacea populations. Plant–plant interactions modified dehydration tolerance and improved post-drought recovery in mixtures compared with monocultures. Water content as low as 20.7%–36.1% in leaf meristems allowed 50% of plants to survive. We conclude that meristem dehydration causes plant mortality and that drought acclimation can increase dehydration tolerance. Genetic diversity, acclimation and plant–plant interactions are essential sources of dehydration tolerance variability to consider when predicting drought-induced mortality. |
format |
article |
topic_facet |
H50 - Troubles divers des plantes F60 - Physiologie et biochimie végétale résistance à la sécheresse tolérance à la sécheresse déshydratation physiologie végétale Poaceae Dactylis glomerata Festuca arundinacea http://aims.fao.org/aos/agrovoc/c_2392 http://aims.fao.org/aos/agrovoc/c_14914 http://aims.fao.org/aos/agrovoc/c_2162 http://aims.fao.org/aos/agrovoc/c_25189 http://aims.fao.org/aos/agrovoc/c_3354 http://aims.fao.org/aos/agrovoc/c_2101 http://aims.fao.org/aos/agrovoc/c_2869 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Barkaoui, Karim Volaire, Florence |
author_facet |
Barkaoui, Karim Volaire, Florence |
author_sort |
Barkaoui, Karim |
title |
Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
title_short |
Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
title_full |
Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
title_fullStr |
Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
title_full_unstemmed |
Drought survival and recovery in grasses: Stress intensity and plant–plant interactions impact plant dehydration tolerance |
title_sort |
drought survival and recovery in grasses: stress intensity and plant–plant interactions impact plant dehydration tolerance |
url |
http://agritrop.cirad.fr/603612/ http://agritrop.cirad.fr/603612/7/603612.pdf |
work_keys_str_mv |
AT barkaouikarim droughtsurvivalandrecoveryingrassesstressintensityandplantplantinteractionsimpactplantdehydrationtolerance AT volaireflorence droughtsurvivalandrecoveryingrassesstressintensityandplantplantinteractionsimpactplantdehydrationtolerance |
_version_ |
1792500487970357248 |