Back to Search
Start Over
The role of drought response genes and plant growth promoting bacteria on plant growth promotion under sustainable agriculture: A review.
- Source :
-
Microbiological research [Microbiol Res] 2024 Sep; Vol. 286, pp. 127827. Date of Electronic Publication: 2024 Jul 04. - Publication Year :
- 2024
-
Abstract
- Drought is a major stressor that poses significant challenges for agricultural practices. It becomes difficult to meet the global demand for food crops and fodder. Plant physiology, physico-chemistry and morphology changes in plants like decreased photosynthesis and transpiration rate, overproduction of reactive oxygen species, repressed shoot and root shoot growth and modified stress signalling pathways by drought, lead to detrimental impacts on plant development and output. Coping with drought stress requires a variety of adaptations and mitigation techniques. Crop yields could be effectively increased by employing plant growth-promoting rhizobacteria (PGPR), which operate through many mechanisms. These vital microbes colonise the rhizosphere of crops and promote drought resistance by producing exopolysaccharides (EPS), 1-aminocyclopropane-1-carboxylate (ACC) deaminase and phytohormones including volatile compounds. The upregulation or downregulation of stress-responsive genes causes changes in root architecture due to acquiring drought resistance. Further, PGPR induces osmolyte and antioxidant accumulation. Another key feature of microbial communities associated with crops includes induced systemic tolerance and the production of free radical-scavenging enzymes. This review is focused on detailing the role of PGPR in assisting plants to adapt to drought stress.<br /> (Copyright © 2024 Elsevier GmbH. All rights reserved.)
- Subjects :
- Bacteria genetics
Bacteria metabolism
Carbon-Carbon Lyases metabolism
Carbon-Carbon Lyases genetics
Droughts
Plant Development
Crops, Agricultural microbiology
Crops, Agricultural growth & development
Agriculture methods
Stress, Physiological
Soil Microbiology
Plant Growth Regulators metabolism
Rhizosphere
Plant Roots microbiology
Plant Roots growth & development
Subjects
Details
- Language :
- English
- ISSN :
- 1618-0623
- Volume :
- 286
- Database :
- MEDLINE
- Journal :
- Microbiological research
- Publication Type :
- Academic Journal
- Accession number :
- 39002396
- Full Text :
- https://doi.org/10.1016/j.micres.2024.127827