Soil microbial remediation to soybean field of Northeast China: Dynamic changes of fomesafen residues and phospholipid fatty acids in the black soil after application of Shigella flexneri FB5. Issue 1 (September 2020)

• Record Type: Journal Article
• Authors: Yang, Fengshan; Sun, Cong; Lai, Yang; Ma, Yukun; Fu, Haiyan; Liu, Chunguang
• Is Part Of: IOP conference series. Volume 569:Issue 1(2020)
• Publication Date: 2020-09
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/569/1/012037
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Fomesafen is widely used to control broad-leaved weeds in oil-bearing crops such as soybean and peanut. However, fomesafen has a long residual period in soil. If it is not used properly, it will cause damage to sensitive crops in different degrees. In this paper, the effects of fomesafen-degrading strains on the residue of fomesafen and the structure of soil microbial community were studied. Under field experiments, a microbial solution containing fomesafen-degrading Shigella flexneri FB5 was sprayed. We then detected residual fomesafen in the soil using high-performance liquid chromatography and phospholipid fatty acid content using gas chromatography-mass spectrometry. Analysis of variance suggested that the addition of fomesafen-degrading strains had a significant effect on soil microorganisms, as revealed by changes in the fungi/bacteria index, gram-negative/gram-positive bacteria ratio, stress indicators, and total phospholipid fatty acids. To sum up, our results show that the use of fomesafen-degrading strains can reduce the toxicity of fomesafen.