Abscisic Acid (
            <scp>ABA</scp>
            )

Cutler, Adrian J.

doi:10.1002/9780470015902.a0020088.pub3

Cited by 2 publications

(1 citation statement)

References 61 publications

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“…(S)-ABA has been registered for different uses in agriculture (Figure 2) [42][43][44]. A wellknown function of ABA is to improve plant tolerance to abiotic stresses, such as drought and cold.…”

Section: Registered Uses Of (S)-aba In Agriculturementioning

confidence: 99%

Persistence of Abscisic Acid Analogs in Plants: Chemical Control of Plant Growth and Physiology

Nguyen

Yan

Nambara

2023

Genes

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Abscisic acid (ABA) is a plant hormone that regulates numerous plant processes, including plant growth, development, and stress physiology. ABA plays an important role in enhancing plant stress tolerance. This involves the ABA-mediated control of gene expression to increase antioxidant activities for scavenging reactive oxygen species (ROS). ABA is a fragile molecule that is rapidly isomerized by ultraviolet (UV) light and catabolized in plants. This makes it challenging to apply as a plant growth substance. ABA analogs are synthetic derivatives of ABA that alter ABA’s functions to modulate plant growth and stress physiology. Modifying functional group(s) in ABA analogs alters the potency, selectivity to receptors, and mode of action (i.e., either agonists or antagonists). Despite current advances in developing ABA analogs with high affinity to ABA receptors, it remains under investigation for its persistence in plants. The persistence of ABA analogs depends on their tolerance to catabolic and xenobiotic enzymes and light. Accumulated studies have demonstrated that the persistence of ABA analogs impacts the potency of its effect in plants. Thus, evaluating the persistence of these chemicals is a possible scheme for a better prediction of their functionality and potency in plants. Moreover, optimizing chemical administration protocols and biochemical characterization is also critical in validating the function of chemicals. Lastly, the development of chemical and genetic controls is required to acquire the stress tolerance of plants for multiple different uses.

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Section: Registered Uses Of (S)-aba In Agriculturementioning

confidence: 99%

Persistence of Abscisic Acid Analogs in Plants: Chemical Control of Plant Growth and Physiology

Nguyen

Yan

Nambara

2023

Genes

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Effects of topping and non-topping on growth-regulating hormones of flue-cured tobacco (Nicotiana tabacum L.)—a proteomic analysis

Gu,

Yang,

Ren

et al. 2023

Front. Plant Sci.

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IntroductionUntil now, the mechanism underlying the impact of topping on hormone regulation in tobacco plants remains unclear, and most studies investigating the hormone signaling pathways in plants rely on genes or transcriptional pathways.MethodsThis study examines the regulatory mechanisms of hormones in the roots and leaves of tobacco plants with and without topping at the protein level.ResultsThe results demonstrate that, compared with non-topped plants, topping leads to a decrease in the levels of IAA (auxin), ABA (abscisic acid), and GA (gibberellin) hormones in the leaves, whereas the content of the JA (jasmonic acid) hormone increases. Furthermore, in the roots, topping results in an increase in the levels of IAA, ABA, and JA hormones, along with a decrease in GA content. In the leaves, a total of 258 significantly different proteins were identified before and after topping, with 128 proteins upregulated and 130 proteins downregulated. In the roots, there were 439 proteins with significantly different quantities before and after topping, consisting of 211 upregulated proteins and 228 downregulated proteins. Notably, these proteins were closely associated with the metabolic and biosynthetic pathways of secondary metabolites, as indicated by functional categorization.ConclusionsWhen integrating the hormone changes and the proteomics results, it is evident that topping leads to increased metabolic activity and enhanced hormone synthesis in the root system. This research provides a theoretical foundation for further investigations into the regulation and signaling mechanisms of hormones at the protein level before and after topping in plants.

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Abscisic Acid ( ABA )

Cited by 2 publications

References 61 publications

Persistence of Abscisic Acid Analogs in Plants: Chemical Control of Plant Growth and Physiology

Persistence of Abscisic Acid Analogs in Plants: Chemical Control of Plant Growth and Physiology

Effects of topping and non-topping on growth-regulating hormones of flue-cured tobacco (Nicotiana tabacum L.)—a proteomic analysis

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