Fig. 2From: Isolation and characterization of phosphofungi, and screening of their plant growth-promoting activitiesAnalyses of organic acids secreted by CS-1 strain were performed by HPLC. HPLC analysis of organic acids. a Chromatogram of a standard solution containing the following organic acids: oxalic, tartaric, malic, lactic acid, acetic, citric, succinic, maleic, and fumaric acid. b Chromatogram of a 3-day-old culture medium inoculated with strain CS-1, mainly containing oxalic, tartaric, and citric acidBack to article page