Role of Basal ABA in Plant Growth and Development
Abscisic acid (ABA) regulates various aspects of plant physiology, including promoting seed dormancy and adaptive responses to abiotic and biotic stresses. In addition, ABA plays an im-portant role in growth and development under non-stressed conditions. This review summarizes phenotypes of ABA bios...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Genes |
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| Online Access: | https://www.mdpi.com/2073-4425/12/12/1936 |
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| author | Benjamin P. Brookbank Jasmin Patel Sonia Gazzarrini Eiji Nambara |
| author_facet | Benjamin P. Brookbank Jasmin Patel Sonia Gazzarrini Eiji Nambara |
| author_sort | Benjamin P. Brookbank |
| collection | DOAJ |
| description | Abscisic acid (ABA) regulates various aspects of plant physiology, including promoting seed dormancy and adaptive responses to abiotic and biotic stresses. In addition, ABA plays an im-portant role in growth and development under non-stressed conditions. This review summarizes phenotypes of ABA biosynthesis and signaling mutants to clarify the roles of basal ABA in growth and development. The promotive and inhibitive actions of ABA in growth are characterized by stunted and enhanced growth of ABA-deficient and insensitive mutants, respectively. Growth regulation by ABA is both promotive and inhibitive, depending on the context, such as concentrations, tissues, and environmental conditions. Basal ABA regulates local growth including hyponastic growth, skotomorphogenesis and lateral root growth. At the cellular level, basal ABA is essential for proper chloroplast biogenesis, central metabolism, and expression of cell-cycle genes. Basal ABA also regulates epidermis development in the shoot, by inhibiting stomatal development, and deposition of hydrophobic polymers like a cuticular wax layer covering the leaf surface. In the root, basal ABA is involved in xylem differentiation and suberization of the endodermis. Hormone crosstalk plays key roles in growth and developmental processes regulated by ABA. Phenotypes of ABA-deficient and insensitive mutants indicate prominent functions of basal ABA in plant growth and development. |
| first_indexed | 2024-03-10T04:02:19Z |
| format | Article |
| id | doaj.art-5790de3252df42b0a23bbcbf532afe2e |
| institution | Directory Open Access Journal |
| issn | 2073-4425 |
| language | English |
| last_indexed | 2024-03-10T04:02:19Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Genes |
| spelling | doaj.art-5790de3252df42b0a23bbcbf532afe2e2023-11-23T08:30:38ZengMDPI AGGenes2073-44252021-11-011212193610.3390/genes12121936Role of Basal ABA in Plant Growth and DevelopmentBenjamin P. Brookbank0Jasmin Patel1Sonia Gazzarrini2Eiji Nambara3Department of Cells and Systems Biology, University of Toronto, Toronto, ON M3S 3G5, CanadaDepartment of Cells and Systems Biology, University of Toronto, Toronto, ON M3S 3G5, CanadaDepartment of Cells and Systems Biology, University of Toronto, Toronto, ON M3S 3G5, CanadaDepartment of Cells and Systems Biology, University of Toronto, Toronto, ON M3S 3G5, CanadaAbscisic acid (ABA) regulates various aspects of plant physiology, including promoting seed dormancy and adaptive responses to abiotic and biotic stresses. In addition, ABA plays an im-portant role in growth and development under non-stressed conditions. This review summarizes phenotypes of ABA biosynthesis and signaling mutants to clarify the roles of basal ABA in growth and development. The promotive and inhibitive actions of ABA in growth are characterized by stunted and enhanced growth of ABA-deficient and insensitive mutants, respectively. Growth regulation by ABA is both promotive and inhibitive, depending on the context, such as concentrations, tissues, and environmental conditions. Basal ABA regulates local growth including hyponastic growth, skotomorphogenesis and lateral root growth. At the cellular level, basal ABA is essential for proper chloroplast biogenesis, central metabolism, and expression of cell-cycle genes. Basal ABA also regulates epidermis development in the shoot, by inhibiting stomatal development, and deposition of hydrophobic polymers like a cuticular wax layer covering the leaf surface. In the root, basal ABA is involved in xylem differentiation and suberization of the endodermis. Hormone crosstalk plays key roles in growth and developmental processes regulated by ABA. Phenotypes of ABA-deficient and insensitive mutants indicate prominent functions of basal ABA in plant growth and development.https://www.mdpi.com/2073-4425/12/12/1936ABAchloroplast biogenesishyponastic growthskotomorphogenesisstomatacutin |
| spellingShingle | Benjamin P. Brookbank Jasmin Patel Sonia Gazzarrini Eiji Nambara Role of Basal ABA in Plant Growth and Development Genes ABA chloroplast biogenesis hyponastic growth skotomorphogenesis stomata cutin |
| title | Role of Basal ABA in Plant Growth and Development |
| title_full | Role of Basal ABA in Plant Growth and Development |
| title_fullStr | Role of Basal ABA in Plant Growth and Development |
| title_full_unstemmed | Role of Basal ABA in Plant Growth and Development |
| title_short | Role of Basal ABA in Plant Growth and Development |
| title_sort | role of basal aba in plant growth and development |
| topic | ABA chloroplast biogenesis hyponastic growth skotomorphogenesis stomata cutin |
| url | https://www.mdpi.com/2073-4425/12/12/1936 |
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