Solubilization of Hardly Soluble Phosphates and Growth Promotion of Maize (Zea mays L.) by Penicillium oxalicum Isolated from Rhizosphere

• Published in: Journal of microbiology and biotechnology Vol. 15; no. 6; pp. 1273 - 1279
• Main Authors: Shin, W.S. (Chungbuk National University, Cheongju, Republic of Korea), Ryu, J.H. (Chungbuk National University, Cheongju, Republic of Korea), Choi, S.J. (Chungbuk National University, Cheongju, Republic of Korea), Kim, C.W. (Chungbuk National University, Cheongju, Republic of Korea), Gadagi, Ravi (Chungbuk National University, Cheongju, Republic of Korea), Madhaiyan, Munusamy (Chungbuk National University, Cheongju, Republic of Korea), Seshadri, Sundaram (Chungbuk National University, Cheongju, Republic of Korea), Chung, J.B. (Daegu University, Kyongsan, Republic of Korea), Sa, T.M. (Chungbuk National University, Cheongju, Republic of Korea), E-mail: [e-mail]
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society for Applied Microbiology 01-12-2005; 한국미생물·생명공학회
• Subjects: ACIDE ORGANIQUE; ACIDOS ORGANICOS; Biological and medical sciences; Biotechnology; Fundamental and applied biological sciences. Psychology; MAIS; MAIZ; MAIZE; N and P accumulation; ORGANIC ACIDS; PENICILLIUM OXALICUM; phosphate solubilization; 생물학; Phosphates; phosphate solubilization; Monocotyledones; Zea mays; Growth; N and P accumulation; Penicillium oxalicum; maize; Accumulation; Organic acids; Fungi; Rhizosphere; Gramineae; Angiospermae; Spermatophyta; Fungi Imperfecti; Thallophyta
• ISSN: 1017-7825

Penicillium oxalicum strain CBPS-3F-Tsa, an efficient phosphate solubilizing fungus, was evaluated for its production of organic acid in vitro and effect of inoculation on the growth promotion of Maize under greenhouse conditions. The fungus solubilized 129.1, 118.8, and 54.1 mg P/l of tricalcium phosphate [Ca₃(PO₄)₂], aluminum phosphate (AIPO₄), and ferric phosphate (FePO₄), respectively, after 72 h of incubation. Malic acid, gluconic acid, and oxalic acid were detected in the flasks supplemented with various phosphate sources [240, 146, 145 mM/l AlPO₄, FePO₄, and Ca₃(PO₄)₂, respectively] together with a large amount of malic acid followed by the other two.