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The role of cytokinins in the response to drought, salt, and ABA. (In…
The role of cytokinins in the response to drought, salt, and ABA.
In brief...
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Cytokinin-deficient plants exhibited a strong stress-tolerant phenotype associated with increased cell membrane integrity and abscisic acid hypersensitivity.
Expression of IPT genes and CKX genes were repressed by stress and ABA treatments, leading to a decrease in cytokinin content.
Homeostatic regulation of cytokinin allows plants to survive during abiotic stress conditions such as high salt or drought.
ABA:CK ratios in the xylem are important for stress signalling. Stresses decreases the production & transport of cytokinin from the roots.
ABA accumulation helps plant to avoid stress through minimizing water loss, accelerating leaf sensecene, downregulating plant growth and inducing biosynthesis of protective substances.
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