abscisic acid
Quick Summary
Abscisic acid (ABA) is a plant hormone that plays a crucial role in regulating plant growth and development. It is a sesquiterpene with the chemical formula C15H20O4. ABA is widely distributed in higher plants and is known for its inhibitory effects on cell elongation.12
Key functions of abscisic acid include:
* Promoting leaf abscission (leaf fall).21
* Inducing dormancy in buds.21
* Facilitating the formation of potato tubers.2
While its exact mode of action is still being researched, it is believed to inhibit the synthesis of RNA and protein. Abscisic acid is also involved in the hormonal interactions that control processes like abscission, where it accelerates senescence.2
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hormoneGrowth inhibitorsThe best characterized one is abscisic acid, which is chemically related to the cytokinins. It is probably universally distributed in higher plants and has a variety of actions; for example, it promotes abscission (leaf fall), the development of dormancy in buds, and the formation of potato tubers. The mode of…
Read MoreThe best characterized one is abscisic acid, which is chemically related to the cytokinins. It is probably universally distributed in higher plants and has a variety of actions; for example, it promotes abscission (leaf fall), the development of dormancy in buds, and the formation of potato tubers. The mode of…
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plant developmentSeasonal adaptationsThe dormancy hormone, abscisic acid, may be concerned in this response and also in stomata closure in response to water stress and in leaf abscission (the separation of the leaf from the plant); there is a great deal of debate among scientists concerning what role, if any, this…
Read MoreThe dormancy hormone, abscisic acid, may be concerned in this response and also in stomata closure in response to water stress and in leaf abscission (the separation of the leaf from the plant); there is a great deal of debate among scientists concerning what role, if any, this…
Read More