Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance
Salinity is one of the main causes of abiotic stress in plants, resulting in negative effects on crop growth and yield, especially in arid and semi-arid regions. The effects of salinity on plant growth mainly generate osmotic stress, ion toxicity, nutrient deficiency, and oxidative stress. Tradition...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/9/1759 |
| _version_ | 1797520612010229760 |
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| author | Miguel Ayuso-Calles José David Flores-Félix Raúl Rivas |
| author_facet | Miguel Ayuso-Calles José David Flores-Félix Raúl Rivas |
| author_sort | Miguel Ayuso-Calles |
| collection | DOAJ |
| description | Salinity is one of the main causes of abiotic stress in plants, resulting in negative effects on crop growth and yield, especially in arid and semi-arid regions. The effects of salinity on plant growth mainly generate osmotic stress, ion toxicity, nutrient deficiency, and oxidative stress. Traditional approaches for the development of salt-tolerant crops are expensive and time-consuming, as well as not always being easy to implement. Thus, the use of plant growth-promoting bacteria (PGPB) has been reported as a sustainable and cost-effective alternative to enhance plant tolerance to salt stress. In this sense, this review aims to understand the mechanisms by which PGPB help plants to alleviate saline stress, including: (i) changes in the plant hormonal balance; (ii) release of extracellular compounds acting as chemical signals for the plant or enhancing soil conditions for plant development; (iii) regulation of the internal ionic content of the plant; or iv) aiding in the synthesis of osmoprotectant compounds (which reduce osmotic stress). The potential provided by PGPB is therefore an invaluable resource for improving plant tolerance to salinity, thereby facilitating an increase in global food production and unravelling prospects for sustainable agricultural productivity. |
| first_indexed | 2024-03-10T07:59:13Z |
| format | Article |
| id | doaj.art-95859884ec474da9bddba040f7d6cb59 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T07:59:13Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-95859884ec474da9bddba040f7d6cb592023-11-22T11:37:54ZengMDPI AGAgronomy2073-43952021-08-01119175910.3390/agronomy11091759Overview of the Role of Rhizobacteria in Plant Salt Stress ToleranceMiguel Ayuso-Calles0José David Flores-Félix1Raúl Rivas2Departamento de Microbiología y Genética, Universidad de Salamanca, Edificio Departamental de Biología, 37007 Salamanca, SpainDepartamento de Microbiología y Genética, Universidad de Salamanca, Edificio Departamental de Biología, 37007 Salamanca, SpainDepartamento de Microbiología y Genética, Universidad de Salamanca, Edificio Departamental de Biología, 37007 Salamanca, SpainSalinity is one of the main causes of abiotic stress in plants, resulting in negative effects on crop growth and yield, especially in arid and semi-arid regions. The effects of salinity on plant growth mainly generate osmotic stress, ion toxicity, nutrient deficiency, and oxidative stress. Traditional approaches for the development of salt-tolerant crops are expensive and time-consuming, as well as not always being easy to implement. Thus, the use of plant growth-promoting bacteria (PGPB) has been reported as a sustainable and cost-effective alternative to enhance plant tolerance to salt stress. In this sense, this review aims to understand the mechanisms by which PGPB help plants to alleviate saline stress, including: (i) changes in the plant hormonal balance; (ii) release of extracellular compounds acting as chemical signals for the plant or enhancing soil conditions for plant development; (iii) regulation of the internal ionic content of the plant; or iv) aiding in the synthesis of osmoprotectant compounds (which reduce osmotic stress). The potential provided by PGPB is therefore an invaluable resource for improving plant tolerance to salinity, thereby facilitating an increase in global food production and unravelling prospects for sustainable agricultural productivity.https://www.mdpi.com/2073-4395/11/9/1759salinityPGPBclimate changeosmotic stression homeostasisphytohormones |
| spellingShingle | Miguel Ayuso-Calles José David Flores-Félix Raúl Rivas Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance Agronomy salinity PGPB climate change osmotic stress ion homeostasis phytohormones |
| title | Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance |
| title_full | Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance |
| title_fullStr | Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance |
| title_full_unstemmed | Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance |
| title_short | Overview of the Role of Rhizobacteria in Plant Salt Stress Tolerance |
| title_sort | overview of the role of rhizobacteria in plant salt stress tolerance |
| topic | salinity PGPB climate change osmotic stress ion homeostasis phytohormones |
| url | https://www.mdpi.com/2073-4395/11/9/1759 |
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