The Role of γ-Aminobutyric Acid (GABA) in the Occurrence of Adventitious Roots and Somatic Embryos in Woody Plants

The occurrence of adventitious roots and somatic embryos is a crucial step in micropropagation that frequently limits the application of this technique in woody plants. Recent studies demonstrated that they can be negatively or positively regulated with γ-aminobutyric acid (GABA), which is a four-ca...

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Bibliographic Details
Published in:Plants (Basel) 2022-12, Vol.11 (24), p.3512
Main Authors: Pei, Lu, Zhao, Yue, Shi, Xinru, Chen, Rongrong, Yan, Jiawei, Li, Xu, Jiang, Zeping, Wang, Junhui, Shi, Shengqing
Format: Article
Language:English
Subjects:
Abscisic acid
adventitious rooting
Amino acids
Carbon
carbon and nitrogen metabolism
Embryo
Embryonic development
Embryonic growth stage
Embryos
Environmental aspects
GABA
Gibberellins
Homeostasis
Hormones
Metabolism
Metabolites
Micropropagation
Mode of action
Neurotransmitters
Nitrogen
Nitrogen metabolism
Physiological aspects
phytohormone
Plant growth
Plant hormones
Review
Root development
Roots
somatic embryo
Somatic embryogenesis
Woody plants
γ-Aminobutyric acid
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Summary:The occurrence of adventitious roots and somatic embryos is a crucial step in micropropagation that frequently limits the application of this technique in woody plants. Recent studies demonstrated that they can be negatively or positively regulated with γ-aminobutyric acid (GABA), which is a four-carbon non-proteinous amino acid that not only acts as a main inhibitory neurotransmitter in mammals. It has been reported that GABA affects plant growth and their response to stress although its mode of action is still unclear. This review dealt with the effects of GABA on adventitious root formation and growth as well as on somatic embryogenesis. Furthermore, we focused on discussing the interaction of GABA with phytohormones, such as auxin, ethylene, abscisic acid, and gibberellin, as well as with the carbon and nitrogen metabolism during adventitious root development. We suggested that research on GABA will contribute to the application of micropropagation in the recalcitrant fruit and forest species.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants11243512