biostudies-literatureUnknown9Wu FFerulic acid (FA) and <i>p</i>-hydroxybenzoic acid (PHBA) are main phenolic compounds accumulated in rhizosphere of continuously cropped cucumber, causing stress in plants. Microbial degradation of a mixture of FA and PHBA is not well understood in soil. We isolated a strain CSY-P13 of <i>Acinetobacter calcoaceticus</i>, inoculated it into soil to protect cucumber from FA and PHBA stress, and explored a mechanism underlying the protection. CSY-P13 effectively degraded a mixture of FA and PHBA in culture solution under conditions of 39.37°C, pH 6.97, and 21.59 g L^-1 potassium dihydrogen phosphate, giving rise to 4-vinyl guaiacol, vanillin, vanillic acid, and protocatechuic acid. During FA and PHBA degradation, activities of superoxide dismutase (SOD), catalase, ascorbate peroxidaFrontiers in microbiology1262https://www.ebi.ac.uk/biostudies/studies/S-EPMC6010532biostudies-literature<i>Acinetobacter calcoaceticus</i> CSY-P13 Mitigates Stress of Ferulic and <i>p</i>-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community.PMC6010532Bai JGZhang YAn YCheng ZYHou XChen CXWu FAn YQWang XJWang Lfalse<i>Acinetobacter calcoaceticus</i> CSY-P13 Mitigates Stress of Ferulic and <i>p</i>-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community.Ferulic acid (FA) and <i>p</i>-hydroxybenzoic acid (PHBA) are main phenolic compounds accumulated in rhizosphere of continuously cropped cucumber, causing stress in plants. Microbial degradation of a mixture of FA and PHBA is not well understood in soil. We isolated a strain CSY-P13 of <i>Acinetobacter calcoaceticus</i>, inoculated it into soil to protect cucumber from FA and PHBA stress, and explored a mechanism underlying the protection. CSY-P13 effectively degraded a mixture of FA and PHBA in culture solution under conditions of 39.37°C, pH 6.97, and 21.59 g L^-1 potassium dihydrogen phosphate, giving rise to 4-vinyl guaiacol, vanillin, vanillic acid, and protocatechuic acid. During FA and PHBA degradation, activities of superoxide dismutase (SOD), catalase, ascorbate peroxida2018-01-01T00:00:00Z20182026-04-18T13:18:13.993Z2019-03-26T23:44:23ZS-EPMC60105322996302410.3389/fmicb.2018.01262