In-Cheol Park 1*, Jeong-Seon Kim 1, Joo Ae Jung 1,2 and Jae-Hong Yoo 1
1Agricultural Microbiology Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Korea
2Department of Microbiology, Dankook University, Cheonan 330-714, Korea
Correspondence to pinc@korea.kr
Korean Journal of Mycology (Kor J Mycol) December 30, 2013, 41(4):218-224.
https://doi.org/10.4489/KJM.2013.41.4.218
Received: October 12, 2013; Revised: November 8, 2013; Accepted: November 17, 2013
Published: December 30, 2013.
© The Korean Society of Mycology
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Of 1,100 yeast strains which were isolated from various Korean fermented foods, screened for phosphate solubilization, five strains showed the ability to solubilize tricalcium phosphate. The 26S rDNA domain D1-D2 sequence analysis revealed the identification of strain Y393 and Y524 as Pichia anomala (99.8 and 100% identity, respectively), Y669 as Pichia farinosa (100% identity), Y901 as Candida versatilis (100% identity), and Y1101 as Pichia subpelliculosa (100% identity). All the phosphate solubilizing strains showed mesophilic characteristics. The temperature range for growth of 4 strains was 20~35 oC and P. farinosa Y669 was able to grow up to 45 oC. The strain C. versatilis Y907 was able to grow at pH range of 5.0~6.0 and showed halophilic characteristics with tolerance to 15% of NaCl concentration. The Phosphate solubilizing yeast strains were survived well in bed soil for 8 weeks which were maintained densities of 10 7~10 8 cfu/g. The highest phosphate solubilizing activity was observed in P. subpelliculosa Y1101. It solubilized 697.2 ug/mL of phosphorus from tricalcium phosphate with decrease in pH from 6.8 to 4.37 after 11 days of inoculation.
Candida versatilis, Phosphate solubilizing yeasts, Pichia anomala, Pichia farinosa, Pichia subpelliculosa