Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress
Abstract Transpiration measurements of two alpine tundra species, Deschampsia caespitosa and Geum rossii , and two arctic tundra species, Dupontia fischeri and Carex aquatilis , were conducted under varying atmospheric and soil moisture stress regimes to determine if the stomatal response to water s...
Published in: | Physiologia Plantarum |
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Wiley
1976
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Online Access: | http://dx.doi.org/10.1111/j.1399-3054.1976.tb04427.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1399-3054.1976.tb04427.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1399-3054.1976.tb04427.x |
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crwiley:10.1111/j.1399-3054.1976.tb04427.x 2024-06-02T08:01:40+00:00 Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress JOHNSON, DOUGLAS A. CALDWELL, MARTYN M. 1976 http://dx.doi.org/10.1111/j.1399-3054.1976.tb04427.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1399-3054.1976.tb04427.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1399-3054.1976.tb04427.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Physiologia Plantarum volume 36, issue 3, page 271-278 ISSN 0031-9317 1399-3054 journal-article 1976 crwiley https://doi.org/10.1111/j.1399-3054.1976.tb04427.x 2024-05-03T11:58:30Z Abstract Transpiration measurements of two alpine tundra species, Deschampsia caespitosa and Geum rossii , and two arctic tundra species, Dupontia fischeri and Carex aquatilis , were conducted under varying atmospheric and soil moisture stress regimes to determine if the stomatal response to water stress may play a role in the local distributions of these species. Under low soil moisture stress, stomata of the species restricted typically to wet meadow areas, Deschampsia and Dupontia , did not exhibit closure until leaf water potential declined. However, when soil moisture stress was low and atmospheric stress increased, Geum and particularly Carex exhibited partial stomatal closure before leaf water potential dropped, suggesting a direct response of the stomata to the vapor pressure gradient between the leaf and the atmosphere. Lower liquid phase water transport resistance from the soil to the leaves may also reduce the development of leaf moisture stress in Geum. Furthermore, Geum and possibly Carex appeared to undergo less of a loss of leaf turgor when leaf water potential decreased. This response may serve to maintain leaf cell turgor and to abate the reduction in leaf enlargement. Article in Journal/Newspaper Arctic Carex aquatilis Tundra Wiley Online Library Arctic Physiologia Plantarum 36 3 271 278 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Transpiration measurements of two alpine tundra species, Deschampsia caespitosa and Geum rossii , and two arctic tundra species, Dupontia fischeri and Carex aquatilis , were conducted under varying atmospheric and soil moisture stress regimes to determine if the stomatal response to water stress may play a role in the local distributions of these species. Under low soil moisture stress, stomata of the species restricted typically to wet meadow areas, Deschampsia and Dupontia , did not exhibit closure until leaf water potential declined. However, when soil moisture stress was low and atmospheric stress increased, Geum and particularly Carex exhibited partial stomatal closure before leaf water potential dropped, suggesting a direct response of the stomata to the vapor pressure gradient between the leaf and the atmosphere. Lower liquid phase water transport resistance from the soil to the leaves may also reduce the development of leaf moisture stress in Geum. Furthermore, Geum and possibly Carex appeared to undergo less of a loss of leaf turgor when leaf water potential decreased. This response may serve to maintain leaf cell turgor and to abate the reduction in leaf enlargement. |
format |
Article in Journal/Newspaper |
author |
JOHNSON, DOUGLAS A. CALDWELL, MARTYN M. |
spellingShingle |
JOHNSON, DOUGLAS A. CALDWELL, MARTYN M. Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
author_facet |
JOHNSON, DOUGLAS A. CALDWELL, MARTYN M. |
author_sort |
JOHNSON, DOUGLAS A. |
title |
Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
title_short |
Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
title_full |
Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
title_fullStr |
Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
title_full_unstemmed |
Water Potential Components, Stomatal Function, and Liquid Phase Water Transport Resistances of Four Arctic and Alpine Species in Relation to Moisture Stress |
title_sort |
water potential components, stomatal function, and liquid phase water transport resistances of four arctic and alpine species in relation to moisture stress |
publisher |
Wiley |
publishDate |
1976 |
url |
http://dx.doi.org/10.1111/j.1399-3054.1976.tb04427.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1399-3054.1976.tb04427.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1399-3054.1976.tb04427.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Carex aquatilis Tundra |
genre_facet |
Arctic Carex aquatilis Tundra |
op_source |
Physiologia Plantarum volume 36, issue 3, page 271-278 ISSN 0031-9317 1399-3054 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1399-3054.1976.tb04427.x |
container_title |
Physiologia Plantarum |
container_volume |
36 |
container_issue |
3 |
container_start_page |
271 |
op_container_end_page |
278 |
_version_ |
1800746069760409600 |