News Update on Phosphate Solubilizing Bacteria Research: Aug – 2019

Phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities

The ability of a number of soil microorganisms to convert insoluble types of phosphorus to AN accessible type is a vital attribute in plant growth-promoting bacterium for increasing plant yields. the utilization of phosphate solubilizing bacterium as inoculants will increase the P uptake by plants. during this study, isolation, screening and characterization of thirty six strains of phosphate solubilizing bacterium (PSB) from Central Taiwan were applied. Mineral phosphate solubilizing (MPS) activities of all isolates were tested on tricalcium phosphate medium by analyzing the soluble-P content when seventy two h of incubation at thirty °C. Identification and phyletic analysis of thirty six isolates were applied by 16S rDNA sequencing. [1]

Plant growth promotion by phosphate solubilizing bacteria

Most science soils contain massive reserves of total phosphorus [P], however the fixation and precipitation of P cause P deficiency, and successively, limit the expansion of crops severely. Phosphorus renewal, particularly in property production systems, remains a significant challenge because it is especially fertilizer-dependent. although the employment of chemical P fertilizers is clearly the most effective means that to avoid P deficiency in numerous agro-ecosystems, their use is usually restricted thanks to its spiralling value. A larger interest has, therefore, been generated to seek out an alternate nonetheless cheap technology that might offer decent P to plants whereas reducing the dependence on expensive chemical P fertilizers. [2]

Isolation and characterization of phosphate solubilizing bacteria from the rhizosphere of crop plants of Korea

Whole-cell fatty acids methyl group organic compound (FAME) profile and 16S rDNA sequence analysis were utilized to isolate and establish the microorganism teams that actively solubilized phosphates in vitro from rhizosphere soil of assorted crops of Korean Peninsula. Out of many hundred colonies that grew on Pikovskaya’s medium thirteen best isolates were designated supported the solubilization of insoluble phosphates in liquid culture and any characterised and known.  [3]

Responses to soil pH gradients of inorganic phosphate solubilizing bacteria community

Soil pH scale is often thought-about a dominant issue poignant the perform of microbiota. Few studies, however, have targeted on communities of microorganism ready to solubilize phosphate (iPSB), that are necessary for the mobilization of soil phosphorus (P), as a result of finding an efficient methodology to assess the abundance and variety of iPSB communities is troublesome. we have a tendency to used a recently rumored methodology of information alignment and quantified the sequence pqqC to research the compositions of iPSB communities from 5 soils with pH scale gradients starting from four to eight. [4]

Optimisation of Growth Factors for Effective Use of Phosphate Solubilizing Bacterial Strains and Its Use as Bioinoculants for the Growth of Groundnut (Arachis hypogaea) Plant

Phosphorus (P) is one amongst the essential macronutrients for plant growth. Phosphate solubilizing bacterium (PSB) area unit organisms that area unit used as bioinoculants to reinforce the plant growth. Plants take phosphate within the style of soluble phosphate ions however thanks to the presence of atomic number 20, magnesium, potassium, sodium, metallic element and metallic element ions in soil, the soluble phosphate is regenerate in to insoluble type. attributable to this method plants utilize little quantity of phosphate, even if phosphorus containing fertilizers area unit superimposed to the plants. Phosphate-solubilizing bacterium (PSB) has been superimposed as plant food to extend phosphorus uptake and plant growth. [5]

Reference

[1] Phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities (Web Link)

[2] Zaidi, A., Khan, M., Ahemad, M. and Oves, M., 2009. Plant growth promotion by phosphate solubilizing bacteria. Acta microbiologica et immunologica Hungarica, 56(3), pp.263-284. (Web Link)

[3] Chung, H., Park, M., Madhaiyan, M., Seshadri, S., Song, J., Cho, H. and Sa, T., 2005. Isolation and characterization of phosphate solubilizing bacteria from the rhizosphere of crop plants of Korea. Soil Biology and Biochemistry, 37(10), pp.1970-1974. (Web Link)

[4] Responses to soil pH gradients of inorganic phosphate solubilizing bacteria community
Bang-Xiao Zheng, Ding-Peng Zhang, Yu Wang, Xiu-Li Hao, Mohammed A. M. Wadaan, Wael N. Hozzein, Josep Peñuelas, Yong-Guan Zhu & Xiao-Ru Yang
Scientific Reportsvolume 9, Article number: 25 (2019) (Web Link)

[5] Anbalagan, P. and Gayathri Krishnaswamy, V. (2017) “Optimisation of Growth Factors for Effective Use of Phosphate Solubilizing Bacterial Strains and Its Use as Bioinoculants for the Growth of Groundnut (Arachis hypogaea) Plant”, Biotechnology Journal International, 19(4), pp. 1-16. doi: 10.9734/BJI/2017/36243. (Web Link)

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