IDENTIFICATION AND EVALUATION OF THE EFFECTIVENESS OF THE PHOSPHATE SOLUBILIZATION BY TALAROMYCES ARGENTINENSIS DASI19079

Authors

  • Sontaya Khamtib Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture
  • Kanokon Bunpha Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture
  • Amnat Eamvijarn Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture
  • Jumlong Khemtong Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture
  • Kunlathida Prasertsung Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture
  • Yuppadee Ngamaukos Soil Science Research Group, Agriculture Production Science Research and Development Division, Department of Agriculture

Keywords:

Biofertilizer, Phosphate solubilizing microorganism, Soil microorganism

Abstract

This research aims to identify and evaluate the phosphate-solubilizing potential of the fungus DASI19079 under different pH conditions. The morphological characteristics of DASI19079 were studied by culturing it on various media. The results indicated that the colony exhibited different appearances and colors depending on the type of medium and the incubation period. The fungus DASI19079 grew and produced ascomata most effectively on Oat meal agar (OMA) after 7 and 14 days of incubation. Microscopic examination revealed that DASI19079 formed globose or subglobose ascomata, with globose or subglobose asci containing eight ellipsoidal ascospores with spinose walls. Additionally, both biverticillate and monoverticillate conidiophores were observed. Nucleotide sequence analysis of the internal transcribed spacer (ITS) region showed the highest similarity (99.43%) to Talaromyces argentinensis NRRL 28750 (NR_165525.1), with 97% query cover. Phylogenetic analysis further indicated that DASI19079 is most closely related to T. argentinensis. The phosphate-solubilizing potential of DASI19079 was assessed for aluminum phosphate, calcium phosphate, and ferric phosphate under pH conditions ranging from 3 to 10. The results indicated that DASI19079 effectively solubilized aluminum phosphate and calcium phosphate in acidic to neutral conditions, while its ability decreased at higher pH levels. In contrast, ferric phosphate solubilization was most efficient at pH levels between 4 and 10. These findings demonstrate the ability of DASI19079 to solubilize phosphate under a wide range of pH conditions, highlighting its potential application as a phosphate-solubilizing biofertilizer.

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Published

2025-12-25

How to Cite

Khamtib, S., Bunpha, K. ., Eamvijarn, A. . ., Khemtong, J. . ., Prasertsung, K. . ., & Ngamaukos, Y. . . (2025). IDENTIFICATION AND EVALUATION OF THE EFFECTIVENESS OF THE PHOSPHATE SOLUBILIZATION BY TALAROMYCES ARGENTINENSIS DASI19079. PSRU Journal of Science and Technology, 10(3), 104–121. retrieved from https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/261295

Issue

Vol. 10 No. 3 (2025): September - December 2025

Section

Research Articles

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