N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration

Multiple plant growth-promoting attributes with N-acyl homoserine lactone (AHL)-mediated quorum sensing exhibiting bacterial strains can help plants to withstand varying abiotic and biotic stress conditions for improving the plant health and productivity. In total, 306 bacterial isolates were isolat...

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Main Authors: Arpita Singh, Puneet Singh Chauhan
Format: Article
Language:English
Published: Journal of Pure and Applied Microbiology 2022-03-01
Series:Journal of Pure and Applied Microbiology
Subjects:
Online Access:https://microbiologyjournal.org/n-acyl-homoserine-lactone-mediated-quorum-sensing-exhibiting-plant-growth-promoting-and-abiotic-stress-tolerant-bacteria-demonstrates-drought-stress-amelioration/
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author Arpita Singh
Puneet Singh Chauhan
author_facet Arpita Singh
Puneet Singh Chauhan
author_sort Arpita Singh
collection DOAJ
description Multiple plant growth-promoting attributes with N-acyl homoserine lactone (AHL)-mediated quorum sensing exhibiting bacterial strains can help plants to withstand varying abiotic and biotic stress conditions for improving the plant health and productivity. In total, 306 bacterial isolates were isolated from diverse locations and sites. In our exploration, bacterial isolates were screened based on AHL production, plant growth-promoting attributes, abiotic stress tolerance, and antagonistic activity against phytopathogenic fungi. Among the screened 306 isolates, 4 (11VPKHP4, 7VP51.8, P51.10, NBRI N7) were selected based on their efficiency in AHL production, biofilm formation, enduring different abiotic stress conditions, exhibiting plant growth-promoting attributes, and antagonistic activity. Based on 16S rRNA gene sequencing analyses of the selected 4 isolates belong to Pseudomonas genera. Selected isolates 11VPKHP4, 7VP51.8, P51.10, and NBRI N7 were also proficient in biosurfactant production, emulsification, suggesting that all isolates fabricate emulsifiers. The plant growth promotion potential of selected 4 bacterial isolates showed significant growth enhancement in all the vegetative parameters of Zea mays under control as well as drought stress condition. Biochemical parameters and defense enzymes under drought stress conditions were also modulated in the PGPR treated plants as compared to their uninoculated respective controls. With quorum sensing, multiple PGPR attributes, stress tolerance, biofilm formation, and EPS production the selected isolates have the potential to facilitate enhanced plant growth, rhizosphere colonization, maintenance of soil moisture content under normal and diverse stresses.
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spelling doaj.art-eaec5c199dfe417c81997cf8bd12da052022-12-22T02:49:45ZengJournal of Pure and Applied MicrobiologyJournal of Pure and Applied Microbiology0973-75102581-690X2022-03-01161669684https://doi.org/10.22207/JPAM.16.1.69N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress AmeliorationArpita SinghPuneet Singh Chauhanhttps://orcid.org/0000-0001-5955-8656Multiple plant growth-promoting attributes with N-acyl homoserine lactone (AHL)-mediated quorum sensing exhibiting bacterial strains can help plants to withstand varying abiotic and biotic stress conditions for improving the plant health and productivity. In total, 306 bacterial isolates were isolated from diverse locations and sites. In our exploration, bacterial isolates were screened based on AHL production, plant growth-promoting attributes, abiotic stress tolerance, and antagonistic activity against phytopathogenic fungi. Among the screened 306 isolates, 4 (11VPKHP4, 7VP51.8, P51.10, NBRI N7) were selected based on their efficiency in AHL production, biofilm formation, enduring different abiotic stress conditions, exhibiting plant growth-promoting attributes, and antagonistic activity. Based on 16S rRNA gene sequencing analyses of the selected 4 isolates belong to Pseudomonas genera. Selected isolates 11VPKHP4, 7VP51.8, P51.10, and NBRI N7 were also proficient in biosurfactant production, emulsification, suggesting that all isolates fabricate emulsifiers. The plant growth promotion potential of selected 4 bacterial isolates showed significant growth enhancement in all the vegetative parameters of Zea mays under control as well as drought stress condition. Biochemical parameters and defense enzymes under drought stress conditions were also modulated in the PGPR treated plants as compared to their uninoculated respective controls. With quorum sensing, multiple PGPR attributes, stress tolerance, biofilm formation, and EPS production the selected isolates have the potential to facilitate enhanced plant growth, rhizosphere colonization, maintenance of soil moisture content under normal and diverse stresses.https://microbiologyjournal.org/n-acyl-homoserine-lactone-mediated-quorum-sensing-exhibiting-plant-growth-promoting-and-abiotic-stress-tolerant-bacteria-demonstrates-drought-stress-amelioration/quorum sensingahlpgprbiofilmdrought
spellingShingle Arpita Singh
Puneet Singh Chauhan
N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
Journal of Pure and Applied Microbiology
quorum sensing
ahl
pgpr
biofilm
drought
title N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
title_full N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
title_fullStr N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
title_full_unstemmed N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
title_short N-acyl Homoserine Lactone Mediated Quorum Sensing Exhibiting Plant Growth-promoting and Abiotic Stress Tolerant Bacteria Demonstrates Drought Stress Amelioration
title_sort n acyl homoserine lactone mediated quorum sensing exhibiting plant growth promoting and abiotic stress tolerant bacteria demonstrates drought stress amelioration
topic quorum sensing
ahl
pgpr
biofilm
drought
url https://microbiologyjournal.org/n-acyl-homoserine-lactone-mediated-quorum-sensing-exhibiting-plant-growth-promoting-and-abiotic-stress-tolerant-bacteria-demonstrates-drought-stress-amelioration/
work_keys_str_mv AT arpitasingh nacylhomoserinelactonemediatedquorumsensingexhibitingplantgrowthpromotingandabioticstresstolerantbacteriademonstratesdroughtstressamelioration
AT puneetsinghchauhan nacylhomoserinelactonemediatedquorumsensingexhibitingplantgrowthpromotingandabioticstresstolerantbacteriademonstratesdroughtstressamelioration