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. 2023 Apr 6;14:1149363. doi: 10.3389/fmicb.2023.1149363

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Copyright © 2023 Luan, Yi, Huang, Cui, Hou, Zhu, Ren, Jia and Liu.

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) and the copyright owner(s) 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.

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PGP and antifungal traits of strain DB2. (A) The upper indicating IAA production by color change. (B) The strain DB2 was negative on the inorganic phosphate solubilization test by no halo zone around colonies. (C) The strain DB2 was negative on the organic phosphate solubilization test by no halo zone around colonies. (D) Yellow-orange halos indicating siderophore production. (E) Protease activity indicated by a clear zone around strain DB2 colonies. (F) Amylase activity indicated by an obvious hydrolytic zone around strain DB2 colonies. (G) The strain was negative for cellulase activity by no zone of hydrolysis around strain DB2.