Grassland plants show no relationship between leaf drought tolerance and soil moisture affinity, but rapidly adjust to changes in soil moisture
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899393" target="_blank" >RIV/60076658:12310/19:43899393 - isvavai.cz</a>
Alternative codes found
RIV/67985939:_____/19:00511546
Result on the web
<a href="https://besjournals.onlinelibrary.wiley.com/doi/epdf/10.1111/1365-2435.13312" target="_blank" >https://besjournals.onlinelibrary.wiley.com/doi/epdf/10.1111/1365-2435.13312</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/1365-2435.13312" target="_blank" >10.1111/1365-2435.13312</a>
Alternative languages
Result language
angličtina
Original language name
Grassland plants show no relationship between leaf drought tolerance and soil moisture affinity, but rapidly adjust to changes in soil moisture
Original language description
Assessing drought tolerance and the ability of plants to adjust to changes in available water resources is crucial for understanding current and future distributions of plant species. While turgor loss point ((tlp)) has been recognized as a direct determinant of drought tolerance in woody plants, information on it for grassland species is largely missing. We first validated a rapid method to estimate (tlp) for grassland species, using osmometry measurements ((tlp-osm)) of osmotic potential at full hydration ((o-osm)), originally proposed for woody species. We confirmed that (o-osm) was tightly positively related to (tlp) measured by the classic pressure-volume curve ((tlp-pv)). Cell wall elasticity was not important in the maintenance of turgor and neither specific leaf area nor leaf dry matter content influenced (tlp.) We then studied the relationship between (tlp-osm) measured under controlled conditions and species' soil moisture affinity (Ellenberg indicator values) in 40 diverse grassland species from the full range of soil moisture conditions found in temperate grasslands. On a subset of 12 species, we studied the adjustment in (tlp-osm) to drought stress and recovery from drought. We hypothesized that dry grassland species are better adapted to drier conditions by having comparatively higher leaf drought tolerance (more negative (tlp)) and a better ability to adjust to acute drought stress. We found that (tlp-osm) was unrelated to species' soil moisture affinity. However, all species developed higher leaf drought tolerance by decreasing (tlp-osm) after seven weeks of drought stress. After only one week of recovery, all species reduced the leaf drought tolerance back to the (tlp-osm) level comparable with non-stressed plants. Our results considerably extend the relationship between (o-osm) and (tlp), originally defined for woody species, and thus propose a yet unexploited direct method for assessing leaf drought tolerance via turgor loss point in herbaceous species. However, the lack of relationship between (tlp) and soil moisture affinity suggests that, unlike in woody plants, leaf-level drought tolerance in grassland plants does not fully translate into whole-plant drought resistance, suggesting an importance of other drought resistance strategies. A plain language summary is available for this article.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Functional Ecology
ISSN
0269-8463
e-ISSN
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Volume of the periodical
33
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
774-785
UT code for WoS article
000471332200003
EID of the result in the Scopus database
2-s2.0-85062979078