Abstract
Exopolysaccharides (EPS) are extracellular metabolites produced by microorganisms, plants, and animals in response to changing climatic conditions. Microorganisms secrete EPS to protect themselves against harsh environmental conditions such as salinity, drought, and heavy metal contamination, and consequently impart stress tolerance to host plants. EPS regulate soil aggregation, moisture level, nutrient entrapment, and biofilm formation, thereby creating feasible conditions for growth of microorganisms and plants. Non-toxicity, structural versatility, and biotechnological significance of EPS draw attention to its potential use as a sustainable alternative for enhanced growth and crop protection in stressed conditions. Recent reports recommend EPS as additives in bioformulations to improve their shelf life and applicability; however, these studies are still in their nascent stages. This review provides a comprehensive summary of the characterization of EPS and their contribution to soil dynamics, biofilm formation, and plant–microbe interaction, as well as imparts stress tolerance in plants. Present advancement in the development of bioformulations through the addition of microbe-based EPS, and their efficacy in improving growth and stress tolerance in plants, has also been critically discussed.
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References
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Sonal Srivastava wishes to acknowledge IIT Delhi for providing fellowship.
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Srivastava, S., Sharma, S. Insight into Exopolysaccharide-Mediated Stress Tolerance in Plants: a Feasible Approach Towards the Development of Next-Generation Bioformulations. J Soil Sci Plant Nutr 23, 22–33 (2023). https://doi.org/10.1007/s42729-022-00958-x
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DOI: https://doi.org/10.1007/s42729-022-00958-x