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פותח על ידי קלירמאש פתרונות בע"מ -
Guard-Cell Hexokinase Increases Water-Use Efficiency Under Normal and Drought Conditions
Year:
2019
Source of publication :
Frontiers in Plant Science
Authors :
אגבאריה, איימן
;
.
גרנות, דוד
;
.
חמאיסי, בלאל
;
.
לוגסי, ניצן
;
.
קלי, גילאור
;
.
Volume :
10
Co-Authors:
Attia, Z., Moshelion, M.
Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Water is a limiting resource for many land plants. Most of the water taken up by plants is lost to the atmosphere through the stomata, which are adjustable pores on the leaf surface that allow for gas exchange between the plant and the atmosphere. Modulating stomatal activity might be an effective way to reduce plants’ water consumption and enhance their productivity under normal, as well as water-limiting conditions. Our recent discovery of stomatal regulation by sugars that is mediated by guard-cell hexokinase (HXK), a sugar-sensing enzyme, has raised the possibility that HXK might be used to increase plant water-use efficiency (WUE; i.e., carbon gain per unit of water). We show here that transgenic tomato and Arabidopsis plants with increased expression of HXK in their guard cells (GCHXK plants) exhibit reduced transpiration and higher WUE without any negative effects on growth under normal conditions, as well as drought avoidance and improved photosynthesis and growth under limited-water conditions. Our results demonstrate that exclusive expression of HXK in guard cells is an effective tool for improving WUE, and plant performance under drought. © Copyright © 2019 Kelly, Egbaria, Khamaisi, Lugassi, Attia, Moshelion and Granot.

Note:
Related Files :
drought
guard cells
hexokinase
photosynthesis
photosynthesis
transpiration
Water-use efficiency
water use efficiency
עוד תגיות
תוכן קשור
More details
DOI :
10.3389/fpls.2019.01499
Article number:
1499
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
45768
Last updated date:
02/03/2022 17:27
Creation date:
12/01/2020 12:21
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Scientific Publication
Guard-Cell Hexokinase Increases Water-Use Efficiency Under Normal and Drought Conditions
10
Attia, Z., Moshelion, M.
Guard-Cell Hexokinase Increases Water-Use Efficiency Under Normal and Drought Conditions

Water is a limiting resource for many land plants. Most of the water taken up by plants is lost to the atmosphere through the stomata, which are adjustable pores on the leaf surface that allow for gas exchange between the plant and the atmosphere. Modulating stomatal activity might be an effective way to reduce plants’ water consumption and enhance their productivity under normal, as well as water-limiting conditions. Our recent discovery of stomatal regulation by sugars that is mediated by guard-cell hexokinase (HXK), a sugar-sensing enzyme, has raised the possibility that HXK might be used to increase plant water-use efficiency (WUE; i.e., carbon gain per unit of water). We show here that transgenic tomato and Arabidopsis plants with increased expression of HXK in their guard cells (GCHXK plants) exhibit reduced transpiration and higher WUE without any negative effects on growth under normal conditions, as well as drought avoidance and improved photosynthesis and growth under limited-water conditions. Our results demonstrate that exclusive expression of HXK in guard cells is an effective tool for improving WUE, and plant performance under drought. © Copyright © 2019 Kelly, Egbaria, Khamaisi, Lugassi, Attia, Moshelion and Granot.

Scientific Publication
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