ACC deaminase positive Enterobacter-mediated mitigation of salinity stress, and plant growth promotion of Cajanus cajan: a lab to field study

• Published in: Physiology and molecular biology of plants Vol. 27; no. 7; pp. 1547 - 1557
• Main Authors: Anand, Gautam, Bhattacharjee, Annapurna, Shrivas, Vijay Laxmi, Dubey, Shubham, Sharma, Shilpi
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.07.2021; Springer Nature B.V
• Subjects: Acidic soils; Biological and Medical Physics; Biomedical and Life Sciences; Biophysics; Biosynthesis; Cajanus cajan; Carboxylic acids; Cell Biology; Laboratories; Life Sciences; Microbiota; Microorganisms; Plant growth; Plant Physiology; Plant Sciences; Research Article; Salinity; Salinity effects; Soils; Stress (physiology); Sustainable agriculture; Rhizosphere; Field trials; ACC deaminase producers; Chemical inhibitor; Salinity
• ISSN: 0971-5894; 0974-0430
• DOI: 10.1007/s12298-021-01031-0

Salinity is a major abiotic stress that negatively impacts plant health and soil microbiota. ACC (1-aminocyclopropane carboxylic acid) deaminase producing microorganisms act as natural stress busters that protect plants from different kinds of stresses. The study focused on the isolation of potent, indigenous, multi-trait ACC deaminase producers. The shortlisted ACC deaminase producers were checked for their ability to promote growth of Cajanus cajan , and mitigate stress under laboratory conditions followed by validation of their potency in naturally saline field conditions. Physiological stress markers were assessed to evaluate the impact of salinity in plants treated with ACC deaminase producer, compared to controls. Further, the contribution of ACC deaminase in stress mitigation was demonstrated by using a chemical inhibitor for ethylene biosynthesis. This study presents a polyphasic approach, transitioning from the rhizospheric soil to the laboratory to validation in the field, and puts forth a promising eco-friendly alternative for sustainable agriculture.