PMID- 35966655 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220816 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 13 DP - 2022 TI - A novel of new class II bacteriocin from Bacillus velezensis HN-Q-8 and its antibacterial activity on Streptomyces scabies. PG - 943232 LID - 10.3389/fmicb.2022.943232 [doi] LID - 943232 AB - Potato common scab is a main soil-borne disease of potato that can significantly reduce its quality. At present, it is still a challenge to control potato common scab in the field. To address this problem, the 972 family lactococcin (Lcn972) was screened from Bacillus velezensis HN-Q-8 in this study, and an Escherichia coli overexpression system was used to obtain Lcn972, which showed a significant inhibitory effect on Streptomyces scabies, with a minimum inhibitory concentration of 10.58 mug/mL. The stability test showed that Lcn972 is stable against UV radiation and high temperature. In addition, long-term storage at room temperature and 4 degrees C had limited effects on its activity level. The antibacterial activity of Lcn972 was enhanced by Cu(2+) and Ca(2+), but decreased by protease K. The protein was completely inactivated by Fe(2+). Cell membrane staining showed that Lcn972 damaged the cell membrane integrity of S. scabies. Scanning electron microscope (SEM) and transmission electron microscope (TEM) observations revealed that the hyphae of S. scabies treated with Lcn972 were deformed and adhered, the cell membrane was incomplete, the cytoplasm distribution was uneven, and the cell appeared hollow inside, which led to the death of S. scabies. In conclusion, we used bacteriocin for controlling potato common scab for the first time in this study, and it provides theoretical support for the further application of bacteriocin in the control of plant diseases. CI - Copyright (c) 2022 Zhao, Zhou, Bai, Zhang, Zhang, Wang, Wu, Zhu and Yang. FAU - Zhao, Jing AU - Zhao J AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Zhou, Zhijun AU - Zhou Z AD - Experimental Training Center of Hebei Agricultural University, Baoding, China. FAU - Bai, Xuefei AU - Bai X AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Zhang, Dai AU - Zhang D AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Zhang, Likui AU - Zhang L AD - College of Environmental Science, Yangzhou University, Yangzhou, China. FAU - Wang, Jinhui AU - Wang J AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Wu, Beibei AU - Wu B AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Zhu, Jiehua AU - Zhu J AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. FAU - Yang, Zhihui AU - Yang Z AD - College of Plant Protection, Hebei Agricultural University, Baoding, China. AD - Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China. LA - eng PT - Journal Article DEP - 20220729 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC9372549 OTO - NOTNLM OT - Bacillus OT - Lcn972 OT - Streptomyces scabies OT - potato OT - potato common scab COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/08/16 06:00 MHDA- 2022/08/16 06:01 PMCR- 2022/07/29 CRDT- 2022/08/15 03:45 PHST- 2022/05/13 00:00 [received] PHST- 2022/06/28 00:00 [accepted] PHST- 2022/08/15 03:45 [entrez] PHST- 2022/08/16 06:00 [pubmed] PHST- 2022/08/16 06:01 [medline] PHST- 2022/07/29 00:00 [pmc-release] AID - 10.3389/fmicb.2022.943232 [doi] PST - epublish SO - Front Microbiol. 2022 Jul 29;13:943232. doi: 10.3389/fmicb.2022.943232. eCollection 2022.