Biodiversity and Plant Growth Promoting Potential of Bacteria from Soybean Rhizosphere of Saline Soil
American Journal of Agriculture and Forestry
Volume 8, Issue 3, May 2020, Pages: 77-80
Received: Apr. 5, 2020;
Accepted: Apr. 24, 2020;
Published: Jun. 12, 2020
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Dhanraj Nakade, Government of Maharashtra, Elphinstone College, Dr. Homi Bhabha University, Mumbai, Maharashtra, India
PGPR are root-associated bacteria that form symbiotic relationships with many plants. These are the Bacteria that colonize plant roots and promote plant growth are referred to as plant growth-promoting rhizobacteria (PGPR). PGPR are highly diverse and are important in plant growth promotion and increase in yield of crops. Almost all of the PGPR bacteria produce phytohormones, some fixes atmospheric nitrogen, some solublizes the phosphates and some resist phytopathogens by production of siderophores. An understanding of microbial diversity is important in agricultural contest, it is important and useful to know soil quality in terms of PGPR bacteria which is helpful for taking measures for soil management and increased plant productivity. It is also important to understand the relationship of soil and plants with the diversity of associated bacteria for their better exploitation. Therefore, it is important to know the soil micro flora and their diversity. Most of the rhizospheric bacterial diversity from normal soil have been studied and organisms explored for their use as bioinoculents. However, saline soil rhizospheric microfloras remain unexplored. By considering this, in the present study fifty two bacterial isolates including PGPR have been isolated from saline soil of Kolhapur district of southern Maharashtra, India. Isolates were identified up to genus and species level. Few isolates were studied their nitrogen fixing and phosphate solublizing activity. Present study showed that amongst nitrogen fixing bacteria Azotobacter chroococcum found to be most dominant and Bacillus megaterium was found to be most dominant phosphate solublizer. Study indicated the importance of these organism as bioinoculents for saline soil and can be explored for biofertilizer production.
Biodiversity and Plant Growth Promoting Potential of Bacteria from Soybean Rhizosphere of Saline Soil, American Journal of Agriculture and Forestry.
Vol. 8, No. 3,
2020, pp. 77-80.
Bresler E., McNeal B. L., Carter D. L., (1982) Saline and sodic soils, Principles-dynamics-modelling’ (Springer-Verla, Berlin, HeidelbergEds), New York, pp. 206-223.
Dahiya IS., Dahiya SS., (1977) Salt affected soils in India: I Their origin, occurrence and characteristics’, J. Aric. Agro. Indus, 10 (1) pp. 11-19.
Richards L. A., Diagnosis and improvement of Saline alkali soil, USDA Handbook No. 60. Wasington, 69-82 (1954).
Williams ST; Sharpe ME; Holt TJ, Bergey’s manual of systematic bacteriology, Vol. I, II, III, IV, The Williams and Wilkins co. Baltimore. 1989.
Portyrata D A; Krichevosky MI, MICRO-IS, a microbiological database management and analysis system, Binary, 1992, 4: 31-36.
Subba Rao N. s., (1999) Soil Microbiology (Fourth edition of Soil Microorganisms and plant growth) Science Publishers, Inc. USA.
Dobereiner J, Soil boilBiochem, 1997, 29: 771-774.
Hardy RR; Burns WF; Holston RD, Soil. Biol. Biochem, 1975, 2, 47-81.
Frankenberger W. T., Poth M., (1988) L-tryptophan transaminase of a bacterium isolated from the rhizosphereof Festucaoctofora (Gramineae) Soil BiolBiochem, 20: 299-304.
Gorden S. A., Weber R. P., (1951) Colorimetric estimation of indole acetic acid, Plant physiol, 26: 192-197.
Lee K. D., Bai Y., Smith D., Han H. S., Supanjani, (2005) Isolation of Plant growth promoting endophytic bacteria from bean nodule, Res. J. Agric. Biol. Sci., 1 (3): 232-236.
Schwyne B., Neialnds J. B., (1987) Annual. Biochem. 160: 40-47.
Gaur R., Shani N., Kawaljeet-Johri B. N., Rossi P., Aragno M., (2004) Curr. Sci., 86: 453-457.
Koide R. T., (1991) Nutrient supply, nutrient demand and plant response to Mycorrhizal infection, Newphytol, 117: 365-386.
Jetiyanon K., Fowler W. D., Kloepper J. W., (2003) Broad-spectrumprotection against several pathogens by PGPR mixtures under field conditions., Plant Dis, 87: 1390-1394.
Vessey J. K., (2003) Plant growth promoting rhizobacteriaas biofertilizers, Plant-Soil, 255: 571-586.
Bashan Y., Holguin G., De-Bashan L. E. (2004) Azospirillum-Plant relationships, physiological, Molecular, Agricultural and Environmental advances (1997-2003)., Can J. Microbiol., 50: 521-577.
Wu S. C., Cao Z. H., Li Z. G., Cheung K. C., Wong M. H., (2005) Effects of biofertilizer containing N-fixer, P and K solublizers and AM fungi on maize growth: a green house trial, Goderma, 125: 155-166.
Rodriguez H., Fraga R., (1999) Phosphate solublizing bacteria and their role in plant growth promotion., Biotechnol Adv, 17: 319-339.
De Freitas J. R., Banerjee M. R., Germida J. J., (1997) Phosphate-solublizingrhizobacteria enhance the growth and yield but not phosphorous uptake of Canola (Brassica napus L.) Biol. Fertil. Soils, 24: 358-364.