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Transcriptional profiling of Arabidopsis thaliana plants' response to low relative humidity suggests a shoot-root communication
Year:
2009
Source of publication :
Plant Science
Authors :
Cohen, Shabtai
;
.
Kapulnik, Yoram
;
.
Kolotilin, Igor
;
.
Koltai, Hinanit
;
.
Lemcoff, Jorge Hugo
;
.
Levin, M.
;
.
Resnick, Nathalie
;
.
Rosianski, Yogev
;
.
Wininger, Smadar
;
.
Volume :
177
Co-Authors:
Levin, M., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Resnick, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Rosianskey, Y., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Kolotilin, I., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Wininger, S., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Lemcoff, J.H., Department of Environmental Physics and Irrigation, ARO, Volcani Center, Bet Dagan, 50250, Israel
Cohen, S., Department of Environmental Physics and Irrigation, ARO, Volcani Center, Bet Dagan, 50250, Israel
Galili, G., Department of Plant Science, The Weizmann Institute of Science, Rehovot, 76100, Israel
Koltai, H., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Kapulnik, Y., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
450
To page:
459
(
Total pages:
10
)
Abstract:
The creation of a water-stress environment usually starts with a reduction in air relative humidity (RH) while soil water potential still reflects favorable conditions. Arabidopsis plants subjected to low RH (17%) exhibited a significant increase in leaf specific hydraulic conductance, reducing the water potential. However, no detectable effects on stomatal performance or osmotic leaf adjustment were noted relative to plants exposed to high RH. In the present study, we profiled gene expression in roots 2.5 and 5 h after shoot exposure to low RH. Multiple genes with various putative biological roles were identified as differentially expressed under these conditions; among them were aquaporins, some of whose expression was induced under low RH. Transcription of two aquaporin was localized to the roots, especially to cells around the vascular system and to cells of the differentiation zone, and to leaf trichomes. Our results suggest that plant roots perceive the low RH stimulus from shoots through a sensing mechanism(s), leading to distinct plant transcriptional responses, potentially reflecting activation of various biological processes. This activation might be a prelude to the expected forthcoming drought conditions, providing the plant with enhanced resistance to future water-stress situations. © 2009 Elsevier Ireland Ltd. All rights reserved.
Note:
Related Files :
Aquaporin
arabidopsis
Arabidopsis thaliana
In situ localization
Low RH
microarray
Water-stress
Show More
Related Content
More details
DOI :
10.1016/j.plantsci.2009.07.010
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
24293
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:06
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Scientific Publication
Transcriptional profiling of Arabidopsis thaliana plants' response to low relative humidity suggests a shoot-root communication
177
Levin, M., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Resnick, N., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Rosianskey, Y., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Kolotilin, I., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Wininger, S., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Lemcoff, J.H., Department of Environmental Physics and Irrigation, ARO, Volcani Center, Bet Dagan, 50250, Israel
Cohen, S., Department of Environmental Physics and Irrigation, ARO, Volcani Center, Bet Dagan, 50250, Israel
Galili, G., Department of Plant Science, The Weizmann Institute of Science, Rehovot, 76100, Israel
Koltai, H., Department of Ornamental Horticulture, ARO, Volcani Center, Bet Dagan, 50250, Israel
Kapulnik, Y., Department of Field Crops and Agronomy, ARO, Volcani Center, Bet Dagan, 50250, Israel
Transcriptional profiling of Arabidopsis thaliana plants' response to low relative humidity suggests a shoot-root communication
The creation of a water-stress environment usually starts with a reduction in air relative humidity (RH) while soil water potential still reflects favorable conditions. Arabidopsis plants subjected to low RH (17%) exhibited a significant increase in leaf specific hydraulic conductance, reducing the water potential. However, no detectable effects on stomatal performance or osmotic leaf adjustment were noted relative to plants exposed to high RH. In the present study, we profiled gene expression in roots 2.5 and 5 h after shoot exposure to low RH. Multiple genes with various putative biological roles were identified as differentially expressed under these conditions; among them were aquaporins, some of whose expression was induced under low RH. Transcription of two aquaporin was localized to the roots, especially to cells around the vascular system and to cells of the differentiation zone, and to leaf trichomes. Our results suggest that plant roots perceive the low RH stimulus from shoots through a sensing mechanism(s), leading to distinct plant transcriptional responses, potentially reflecting activation of various biological processes. This activation might be a prelude to the expected forthcoming drought conditions, providing the plant with enhanced resistance to future water-stress situations. © 2009 Elsevier Ireland Ltd. All rights reserved.
Scientific Publication
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