The biochemical characteristics of phosphate bacteria capable of increasing soil phosphorus bioavailability in Andisols

Tamad, Tamad; Ismangil, Ismangil; Maryanto, Joko

doi:10.37501/soilsa/122403

Cited by 2 publications

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“…Zhao et al , mentioned in their paper that QS is sometimes linked to antibiotics resistance activity via efflux pump, biofilm and secretion system [ 23 ]. Tamad et al , 2020 reported that phosphate solubilizing bacteria secreted AHLs and they noticed that butanoyl-AHL (C- 4AHL) was mainly found among all AHLs [ 24 ]. Ghosh et al reported that Burkholderia species uses quorum sensing system to indirectly regulate phosphate solubilization by inducing biofilm formation [ 25 ].…”

Section: Discussionmentioning

confidence: 99%

Quorum sensing in bacteria of rice rhizospheres from Chhattisgarh, India

Kumar¹

2023

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Quorum sensing is a phenomena used by bacteria for regulation of some important characteristics coordinately. Gram-negative and Gram-positive bacteria, both utilize this system of communication, but they use different signal molecules for this, i.e. Gram-negative bacteria preferentially use acyl homoserine lactone (AHL). Rhizospheric soil is rich in bacterial diversity, with the presence of both types of bacteria. It will be useful if we know the quorum sensing based communications among bacteria present in rhizospheric soil. This work was undertaken with the idea to explore the diversity of AHL producing bacteria in soil. For this, bacteria were isolated from rice rhizosphere from field located in Dhamtari district of Chhattisgarh. To study quorum sensing, detection of AHL production was performed by colorimetry method. Out of total 29 bacterial isolates, only three Gram-negative bacteria showed positive result for AHLs production. These 3 isolates were selected for further study. The isolates were characterized by biochemical test. Other characteristics of these bacteria were also tested, like antibiotic resistance profile, indole test, and capability to biofilm formation, phosphate solubilization as well as their growth in different specific culture media. The Results suggest that AHLs producing bacteria may belong to family of Pseudomonas sp., which are reported in different researches to be part of the PGPR group of organisms. This work forms the base to study the cell-cell communication in plant rhizospheres.

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Section: Discussionmentioning

confidence: 99%

Quorum sensing in bacteria of rice rhizospheres from Chhattisgarh, India

Kumar¹

2023

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Comparison of Bacterial Communities in Five Ectomycorrhizal Fungi Mycosphere Soil

Chen,

Li,

Cao

et al. 2024

Microorganisms

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Ectomycorrhizal fungi have huge potential value, both nutritionally and economically, but most of them cannot be cultivated artificially. To better understand the influence of abiotic and biotic factors upon the growth of ectomycorrhizal fungi, mycosphere soil and bulk soil of five ectomycorrhizal fungi (Calvatia candida, Russula brevipes, Leucopaxillus laterarius, Leucopaxillus giganteus, and Lepista panaeola) were used as research objects for this study. Illumina MiSeq sequencing technology was used to analyze the community structure of the mycosphere and bulk soil bacteria of the five ectomycorrhizal fungi, and a comprehensive analysis was conducted based on soil physicochemical properties. Our results show that the mycosphere soil bacteria of the five ectomycorrhizal fungi are slightly different. Escherichia, Usitatibacter, and Bradyrhizobium are potential mycorrhizal-helper bacteria of distinct ectomycorrhizal fungi. Soil water content, soil pH, and available potassium are the main factors shaping the soil bacterial community of the studied ectomycorrhizal fungi. Moreover, from the KEGG functional prediction and LEfSe analysis, there are significant functional differences not only between the mycosphere soil and bulk soil. ‘Biosynthesis of terpenoidsand steroids’, ‘alpha-Linolenic acid metabolism’, ‘Longevity regulating pathway-multiple species’, ‘D-Arginine and D-ornithine metabolism’, ‘Nitrotoluene degradation’ and other functions were significantly different in mycosphere soil. These findings have pivotal implications for the sustainable utilization of ectomycorrhizal fungi, the expansion of edible fungus cultivation in forest environments, and the enhancement of derived economic benefits.

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The biochemical characteristics of phosphate bacteria capable of increasing soil phosphorus bioavailability in Andisols

Cited by 2 publications

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Quorum sensing in bacteria of rice rhizospheres from Chhattisgarh, India

Quorum sensing in bacteria of rice rhizospheres from Chhattisgarh, India

Comparison of Bacterial Communities in Five Ectomycorrhizal Fungi Mycosphere Soil

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