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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Microbial Physiology and Metabolism
Volume 15 - 2024 | doi: 10.3389/fmicb.2024.1494859

Screening and identification of two novel phosphate-solubilizing pyrenochaetopsis tabarestanensis strains and their role in enhancing phosphorus uptake in rice

Provisionally accepted
Xiaozhe Bao Xiaozhe Bao 1Haifei Lu Haifei Lu 2*Jinyao Zhao Jinyao Zhao 3*Taotao Yang Taotao Yang 1*Longmei Wu Longmei Wu 1*Jixiang Zou Jixiang Zou 1*Qingchun Chen Qingchun Chen 3*Bin Zhang Bin Zhang 1*
  • 1 Rice Research Institute, Guangdong Academy of Agricultural Sciences (GDAAS), Guangzhou, China
  • 2 Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, Jiangsu Province, China
  • 3 College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, China

The final, formatted version of the article will be published soon.

    Low phosphorus (P) use efficiency significantly impacts rice yields. An environmentally friendly approach to increase phosphorus absorption and utilization in rice involves the exploration of phosphorus-solubilizing fungal resources. This study aimed to isolate and characterize fungal strains from the rice rhizosphere and assess their phosphate solubilization capabilities, plant-growth-promoting (PGP) traits, and mechanisms involved. An initial comparative sequence analysis of the hypervariable regions of the ITS rDNA and morphological analysis identified two strains belonging to the genus Pyrenochaetopsis, designated Pyrenochaetopsis tabarestanensis WFY-1 (PtWFY-1) and WFY-2 (PtWFY-2). Both strains demonstrated the ability to solubilize tricalcium phosphate, magnesium phosphate, phosphate rock powder, and calcium phytate phosphorus in vitro through acidification via the exudation of oxoglutaric acid, acetic acid, citric acid, and pyruvic acid. The amounts of oxoglutaric acid, acetic acid, citric acid, and pyruvic acid secreted were

    Keywords: Antifungal activity, Auxins and phytohormones, Biofertilization, Organic acid secretion, Phosphate-solubilizing fungi (PSF), Plant phosphorus absorption

    Received: 11 Sep 2024; Accepted: 16 Dec 2024.

    Copyright: © 2024 Bao, Lu, Zhao, Yang, Wu, Zou, Chen and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Haifei Lu, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, Jiangsu Province, China
    Jinyao Zhao, College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510100, Guangdong, China
    Taotao Yang, Rice Research Institute, Guangdong Academy of Agricultural Sciences (GDAAS), Guangzhou, China
    Longmei Wu, Rice Research Institute, Guangdong Academy of Agricultural Sciences (GDAAS), Guangzhou, China
    Jixiang Zou, Rice Research Institute, Guangdong Academy of Agricultural Sciences (GDAAS), Guangzhou, China
    Qingchun Chen, College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510100, Guangdong, China
    Bin Zhang, Rice Research Institute, Guangdong Academy of Agricultural Sciences (GDAAS), Guangzhou, China

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