| Title: | Antibiotic Effects of Volatiles Produced by Bacillus tequilensis XK29 against the Black Spot Disease Caused by Ceratocystis fimbriata in Postharvest Sweet Potato |
| Author(s): | Xu M; Guo J; Li T; Zhang C; Peng X; Xing K; Qin S; |
| Address: | "School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, P.R. China. Wanbang Biopharmaceuticals Group Co., Ltd., Xuzhou 221001, Jiangsu, P.R. China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Black spot disease caused by Ceratocystis fimbriata is destructive to the production, transportation, and storage of sweet potato. The antifungal effects of Bacillus tequilensis XK29 against C. fimbriata through volatile organic compounds (VOCs) were evaluated in this study. The activated carbon assay proved that XK29 could exert antibiotic effects through volatiles. By optimizing the wheat seed weight, inoculation method, concentration, volume, and time, the antifungal activity of XK29 was significantly improved. XK29 fumigation inhibited spore formation and germination and changed the cell morphology of C. fimbriata. During the storage of sweet potato tuber roots, XK29 effectively controlled black spot disease and reduced the weight loss and malondialdehyde content. Metabolomic analysis revealed that 21 volatile compounds were released from XK29. Isovaleric acid, isobutyric acid, and 2-methylbutanoic acid effectively inhibited the growth of C. fimbriata. These results indicate that B. tequilensis XK29 has a good potential to be developed as a microbial fumigation agent" |
| Keywords: | Anti-Bacterial Agents *Ascomycota Bacillus Ceratocystis *Ipomoea batatas Plant Diseases Bacillus tequilensis antimicrobial biocontrol metabolomics volatile organic compound; |
| Notes: | "MedlineXu, Mingjie Guo, Jianheng Li, Tengjie Zhang, Chunmei Peng, Xue Xing, Ke Qin, Sheng eng 2021/10/28 J Agric Food Chem. 2021 Nov 10; 69(44):13045-13054. doi: 10.1021/acs.jafc.1c04585. Epub 2021 Oct 27" |
