Abstract
The activation of phospholipase Da1 (PLDa1) produces lipid messenger phosphatidic acid and promotes stomatal closure in Arabidopsis. To explore the use of the PLDa1-mediated signalling towards decreasing water loss in crop plants, we introduced Arabidopsis PLDa1 under the control of a guard cell–specific promoter AtKatIpro into two canola (Brassica napus) cultivars. Multiple AtKatIpro::PLDa1 lines in each cultivar displayed decreased water loss and improved biomass accumulation under hyperosmotic stress conditions, including drought and high salinity. Moreover, AtKatIpro::PLDa1 plants produced more seeds than did WT plants in fields under drought. The results indicate that the guard cell–specific expression of PLDa1 has the potential to improve crop yield by enhancing drought tolerance
Original language | American English |
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Journal | Plant Biotechnology Journal |
Volume | 11 |
DOIs | |
State | Published - Apr 1 2013 |
Keywords
- Brassica napus
- drought
- hyperosmotic stress
- phospholipase Da1
- plant growth.
Disciplines
- Biology
- Botany
- Agricultural Science