נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Overexpression of a plasma membrane aquaporin in transgenic tobacco improves plant vigor under favorable growth conditions but not under drought or salt stress
Year:
2003
Source of publication :
Plant Cell
Authors :
Bendov, Rozalina
;
.
Kapulnik, Yoram
;
.
Shahak, Yosepha
;
.
Wininger, Smadar
;
.
Volume :
15
Co-Authors:
Aharon, R., Department of Plant Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
Shahak, Y., Department of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Wininger, S., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Bendov, R., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Kapulnik, Y., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Galili, G., Department of Plant Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
Facilitators :
From page:
439
To page:
447
(
Total pages:
9
)
Abstract:
Most of the symplastic water transport in plants occurs via aquaporins, but the extent to which aquaporins contribute to plant water status under favorable growth conditions and abiotic stress is not clear. To address this issue, we constitutively overexpressed the Arabidopsis plasma membrane aquaporin, PIP1b, in transgenic tobacco plants. Under favorable growth conditions, PIP1b overexpression significantly increased plant growth rate, transpiration rate, stomatal density, and photosynthetic efficiency. By contrast, PIP1b overexpression had no beneficial effect under salt stress, whereas during drought stress it had a negative effect, causing faster wilting. Our results suggest that symplastic water transport via plasma membrane aquaporins represents a limiting factor for plant growth and vigor under favorable conditions and that even fully irrigated plants face limited water transportation. By contrast, enhanced symplastic water transport via plasma membrane aquaporins may not have any beneficial effect under salt stress, and it has a deleterious effect during drought stress.
Note:
Related Files :
arabidopsis
Eukaryota
Nicotiana obtusifolia
photosynthesis
Plant Transpiration
water
Show More
Related Content
More details
DOI :
10.1105/tpc.009225
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30892
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:58
You may also be interested in
Scientific Publication
Overexpression of a plasma membrane aquaporin in transgenic tobacco improves plant vigor under favorable growth conditions but not under drought or salt stress
15
Aharon, R., Department of Plant Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
Shahak, Y., Department of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Wininger, S., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Bendov, R., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Kapulnik, Y., Dept. of Agronomy/Natural Resources, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Galili, G., Department of Plant Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
Overexpression of a plasma membrane aquaporin in transgenic tobacco improves plant vigor under favorable growth conditions but not under drought or salt stress
Most of the symplastic water transport in plants occurs via aquaporins, but the extent to which aquaporins contribute to plant water status under favorable growth conditions and abiotic stress is not clear. To address this issue, we constitutively overexpressed the Arabidopsis plasma membrane aquaporin, PIP1b, in transgenic tobacco plants. Under favorable growth conditions, PIP1b overexpression significantly increased plant growth rate, transpiration rate, stomatal density, and photosynthetic efficiency. By contrast, PIP1b overexpression had no beneficial effect under salt stress, whereas during drought stress it had a negative effect, causing faster wilting. Our results suggest that symplastic water transport via plasma membrane aquaporins represents a limiting factor for plant growth and vigor under favorable conditions and that even fully irrigated plants face limited water transportation. By contrast, enhanced symplastic water transport via plasma membrane aquaporins may not have any beneficial effect under salt stress, and it has a deleterious effect during drought stress.
Scientific Publication
You may also be interested in