Isolation and characterization of phosphate solubilising bacteria undernath Excoecaria agallocha L. of muthupet mangrove reserve

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Research Paper 07/08/2025
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Isolation and characterization of phosphate solubilising bacteria undernath Excoecaria agallocha L. of muthupet mangrove reserve

Ms. S. Alice Keerthana, V. Shanmugaraju, P. Arun, M. Poongothai
Int. J. Biosci. 27(2), 83-89, August 2025.
Copyright Statement: Copyright 2025; The Author(s).
License: CC BY-NC 4.0

Abstract

Mangrove forests provide numerous benefits, serving as essential ecosystems for both the environment and human populations. Mangrove forests benefit from microbial development in an array of ways, including nutrient cycling, decomposition, and carbon capture. Microbes perform an important role in breaking down organic matter, releasing critical nutrients for plant growth, and boosting ecosystem productivity. They also contribute to carbon storage and can even yield useful molecules for biotechnological purposes. The current study focuses on the isolation and characterization of  Phosphate solubilizing bacteria (PSB) that has the capability to convert the inorganic form of phosphate into its bioavailable form using Pikovaskaya’s (PKA) agar medium containing insoluble tricalcium phosphate. Among the 32 isolates obtained only 8 isolates showed increased Phosphate Solubilizing Index (PSI) and further only one isolate that showed the highest value of 2.3. The obtained genomic DNA was PCR amplified and subjected to 16S rRNA sequencing and was identified as Bacillus pumilus ST3-23-10. This can further be quantitatively estimated with several other parameters and can be utilized as a bioinoculant for plant growth and development.

Annizah IN, Alawiyah DD, Susetyo RD, Surtiningsih T, Nurhariyati T. 2021. Phosphate solubilizing bacteria isolated from Tuban mangrove soil, Indonesia. IOP Conference Series: Earth and Environmental Science 762(1), 012007. https://doi.org/10.1088/1755-1315/762/1/012007

Arumugam M, Panneerselvam R. 2012. Micropropagation and phenolic exudation protocol for Excoecaria agallocha – an important mangrove. Asian Pacific Journal of Tropical Biomedicine 2(2), S1096-S1101. https://doi.org/10.1016/S2221-1691(12)60368-2

Arumugam M, Pawar UR, Gomathinayagam M, Lakshmanan GMA, Panneerselvam R. 2012. Antibacterial and antioxidant activity between micropropagated and field grown plants of Excoecaria agallocha L. International Journal of Plant, Animal and Environmental Sciences 3(3), 235.

Dipta B, Kirti S, Bhardwaj S, Gupta S, Kaushal R. 2017. Phosphate solubilizing potential of Bacillus pumilus for the enhancement of cauliflower (Brassica oleracea var. botrytis L.). Ecology, Environment and Conservation 23, 1541-1548.

Ezawa T, Smith SE, Smith FA. 2002. P metabolism and transport in AM fungi. Plant and Soil 244, 221-230. https://doi.org/10.1023/A:1020258325010

Gyaneshwar P, Naresh Kumar G, Parekh LJ, Poole PS. 2002. Role of soil microorganisms in improving P nutrition of plants. Plant and Soil 245, 83-93. https://doi.org/10.1023/A:1020663916259

Hamid AAA, Hamdan S, Ariffin SHZ, Huyop F. 2010. Molecular prediction of dehalogenase producing microorganism using 16S rDNA analysis of 2,2-dichloropropionate (Dalapon) degrading bacterium isolated from volcanic soil.

Haswania H, Karim H, Azis AA, Iriany N, Jumadi O. 2021. Isolation and characterization of phosphate solubilizing bacteria from corn rhizosphere.

Isenberg HD. 1998. Essential procedures for clinical microbiology. ASM Press, Washington, DC, pp. 216-221.

Mondal S, Ghosh D, Ramakrishna K. 2016. A complete profile on blind-your-eye mangrove Excoecaria agallocha L. (Euphorbiaceae): Ethnobotany, phytochemistry, and pharmacological aspects. Pharmacognosy Reviews 10(20), 123. https://doi.org/10.4103/0973-7847.194049

Nilsson WB, Paranjype RN, DePaola A, Strom MS. 2003. Sequence polymorphism of the 16S rRNA gene of Vibrio vulnificus is a possible indicator of strain virulence. Journal of Clinical Microbiology 41(1), 442-446. https://doi.org/10.1128/jcm.41.1.442-446.2003

Pande A, Pandey P, Mehra S, Singh M, Kaushik S. 2017. Phenotypic and genotypic characterization of phosphate solubilizing bacteria and their efficiency on the growth of maize. Journal of Genetic Engineering and Biotechnology 15(2), 379-391. https://doi.org/10.1016/j.jgeb.2017.06.005

Patil RC, Manohar SM, Katchi VI, Rao AJ, Moghe A. 2012. Ethanolic stem extract of Excoecaria agallocha induces G1 arrest or apoptosis in human lung cancer cells depending on their P53 status. Taiwania 57(2), 89-98.

Patil RC, Manohar SM, Upadhye MV, Katchi VI, Rao AJ, Mule A, Moghe AS. 2012. Anti reverse transcriptase and anticancer activity of stem ethanol extracts of Excoecaria agallocha (Euphorbiaceae). Ceylon Journal of Science (Biological Sciences) 40(2).http://dx.doi.org/10.4038/cjsbs.v40i2.3931

Zaidi A, Khan MS, Ahemad M, Oves M, Wani PA. 2009. Recent advances in plant growth promotion by phosphate-solubilizing microbes. In: Microbial strategies for crop improvement, pp. 23-50. https://doi.org/10.1007/978-3-642-01979-1_2

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