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The role of plant-associated rhizobacteria in plant growth,biocontrol and abiotic stress management |
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| Authors: | Basharat Ahmad Bhat Lubna Tariq Showkat Nissar Sheikh Tajamul Islam Shahid Ul Islam Zahid Mangral Noshin Ilyas Riyaz Z Sayyed Govarthanan Muthusamy Woong Kim Tanvir Ul Hasan Dar |
| Institution: | 1. Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India
Basharat Ahmad Bhat, Lubna Tariq and Showkat Nissar contributed equally to this work.;2. Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India Basharat Ahmad Bhat, Lubna Tariq and Showkat Nissar contributed equally to this work.;3. Department of Botany, School of Biological Sciences, University of Kashmir, Srinagar, India Basharat Ahmad Bhat, Lubna Tariq and Showkat Nissar contributed equally to this work.;4. Department of Bioresources, School of Biological Sciences, University of Kashmir, Srinagar, India;5. Department of Biotechnology, School of Biosciences and Biotechnology, BGSB University, Rajouri, India;6. Department of Botany, PMAS-Arid Agriculture University, Rawalpindi, Pakistan;7. Asian PGPR Society, Auburn Ventures, Auburn, AL, USA;8. Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea |
| Abstract: | The rhizosphere is the region around the plant roots where maximum microbial activities occur. In the rhizosphere, microorganisms' beneficial and harmful activities affect plant growth and development. The mutualistic rhizospheric bacteria which improve plant growth and health are known as plant growth-promoting rhizobacteria (PGPR). They are very important due to their ability to help the plant in diverse ways. PGPR such as Pseudomonas, Bacillus, Azospirillum, Azotobacter, Arthrobacter, Achromobacter, Micrococcus, Enterobacter, Rhizobium, Agrobacterium, Pantoea and Serratia are now very well known. Rhizomicrobiome plays critical roles in nutrient acquisition and assimilation, improved soil texture, secreting and modulating extracellular molecules such as hormones, secondary metabolites, antibiotics and various signal compounds, all leading to the enhancement of plant growth and development. The microbes and compounds they secrete constitute valuable biostimulants and play pivotal roles in modulating plant stress responses. In this review, we highlight the rhizobacteria diversity and cutting-edge findings focusing on the role of a PGPR in plant growth and development. We also discussed the role of PGPR in resisting the adverse effects arising from various abiotic (drought, salinity, heat, heavy metals) stresses. |
| Keywords: | abiotic stress inorganic fertilizers PGPR rhizosphere sustainable agriculture |