Background: Kerala flood in 2018 and 2019 had reduced the yield in many agricultural plots of Attapadi, Kerala, India. The scope of the study was to identify the potential native plant growth promoting rhizobacteria from the post flood-affected sites to rejuvenate the nutrient depleted soils. Methods: The present study was carried out in the department of agricultural microbiology, College of Agriculture, Kerala Agricultural University, Vellanikara, Kerala during 2020-2022. Bacteria were isolated from post flood-affected agricultural soils of Attapadi in Palakkad district of Kerala, India. Three morphologically distinct isolates were screened for cellulase, laccase and dehydrogenase to select the best bacterial isolate that could produce the multifunctional enzymes for rejuvenation of flood-affected soils. The isolate were also screened for plant growth promotion traits such as; indole acetic acid (IAA), phosphate solubilizing ability, nitrogen fixing ability and potassium solubilizing ability. Result: The most promising isolate was identified as Ignatzschineria cameli, which was found to be a high indole acetic acid producer along with phosphate and potassium solubilizing ability and revealed as the first report of PGPR from post flood-affected soils of Kerala.
Climatic disasters, like floods and landslides, are the major causes for the decline in soil fertility or soilorganic matter. Soil organic matter influences the physical, chemical, and biological properties of soil; it isthe fundamental aspect that discloses soil health. Microorganisms in the soil environment participate acritical task in the enhancement of soil nutrients and soil fertility. Even though microbial bioinoculants arewidely studied for improving agriculture, the application of microbial consortium for the restoration oforganic matter or soil fertility in the flood and landslide depleted soils are yet to be exploited. The part ofliving biomass, i.e. soil microorganisms in restoring soil organic matter seems to be crucial, as microbes arethe major drivers in escalating organic matter in the soil. The living biomass recycles the nutrients in thesoil by utilizing the plant and animal litter in the soil and offers the crops adequate nutrients. Thus,microorganisms can force the accumulation of stable and chemically diverse soil organic matter in poorfertile soils. Exploring such vibrant, complex advantageous interactions among microorganisms seemsimperative to replenish organic matter exhausted soil. This article reviews the relevance of soil organicmatter, the role of soil microorganisms in improving soil organic matter and emphasizes the need forintensive research in raising beneficial microbiome for replenishing soil organic matter and thus to rejuvenatethe flood and landslide depleted soils to sustain agriculture.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.