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http://dx.doi.org/10.14480/JM.2019.17.2.64

Phosphate solubilizing effect by two paraburkholderia bacteria Isolated from button mushroom medium  

Yu, Hye-Jin (Department of Bio-Environmental Chemistry, College of Agriculture and Lifesciences, Chungnam National University)
Yoon, Min-Ho (Department of Bio-Environmental Chemistry, College of Agriculture and Lifesciences, Chungnam National University)
Publication Information
Journal of Mushroom / v.17, no.2, 2019 , pp. 64-69 More about this Journal
Abstract
The present study was conducted to investigate the synergistic effects caused by single and co-inoculation of the phosphate solubilizing bacteria (PSB), Paraburkholderia phenazinium YH3 and Paraburkholderia metrosideri YH4. Phosphate solubilization was assessed by measuring the phosphorus contents for 7 days in a single and co-inoculation medium. Co-inoculation of the two strains was found to release the highest content of soluble phosphorus ($1,250{\mu}g\;mL^{-1}$) into the medium, followed by the single inoculation of P. metrosideri YH4 ($1196.59{\mu}g\;mL^{-1}$) and P. phenazinium YH3 ($994.34{\mu}g\;mL^{-1}$). The highest pH reduction, organic acid production and glucose consumption was also observed in the co-inoculation medium of the two strains. A plant growth promotion bioassay revealed that co-inoculation with the two strains enhanced the growth of romaine lettuce more than single inoculation with either of the two strains (28.5% for leaf and 16.6% for root). Although there was no significant difference between single and co-inoculation of bacterial strains in terms of phosphorous release and plant growth, the synergistic effects of co-inoculation with PSB could be beneficial for crop growth.
Keywords
Lettuce Growth; Paraburkholderia metrosideri YH4; Paraburkholderia phenazinium YH3; Phosphate Solubilization;
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