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Yang P, Geng C, Zhu S, Zhou Z, Bilal M, Gu C, Xu H, Ji L, Xiao B, Wang J, Qian Z, Zhao L, Zhao Y, Lu H. Identification and functional analysis of non-coding regulatory small RNA FenSr3 in Bacillus amyloliquefaciens LPB-18. PeerJ 2023; 11:e15236. [PMID: 37214100 PMCID: PMC10194069 DOI: 10.7717/peerj.15236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/28/2023] [Indexed: 05/24/2023] Open
Abstract
Bacillus amyloliquefaciens is an interesting microbe in the food processing and manufacturing industries. Non-coding small RNAs (sRNAs) have been shown to play a crucial role in the physiology and metabolism of bacteria by post-transcriptionally regulating gene expression. This study investigated the function of novel sRNA FenSr3 by constructing fenSr3 deficient strain and complementary strains in B. amyloliquefaciens LPB-18 , which were named LPN-18N and LPB-18P, respectively. The result showed significant differences in fengycin yield between strain LPB -18N and LPB-18P. The production of fengycin was significantly enhanced in B. amyloliquefaciens LPB-18N, compared with that of the strain LPB-18 from 190.908 mg/L to 327.598 mg/L. Moreover, the production of fengycin decreased from 190.464 mg/L to 38.6 mg/L in B . amyloliquefaciens LPB-18P. A comparative transcriptome sequencing was carried out to better understand the complex regulatory mechanism. Transcription analysis revealed that 1037 genes were differentially expressed between B. amyloliquefaciens LPB-18 and B. amyloliquefaciens LPB-18N, including the key regulatory genes in fatty acid, amino acid biosynthesis, and central carbon metabolism, which could provide sufficient quantities of building precursors for fengycin biosynthesis. The biofilm formation and sporulation was also enhanced in the strain LPB-18N, which indicates that FenSr3 could play a vital role in stress resistance and promotes survival in B. amyloliquefaciens. Some sRNAs involved in stress response have been identified in the literature, but their regulatory roles in fengycin production remain unclear. The study will contribute a novel perspective to the regulation mechanism of biosynthesis and the optimization of key metabolites of B. amyloliquefaciens.
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Affiliation(s)
- Panping Yang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Chengxin Geng
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Weigang, China
| | - Shaohui Zhu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Zhen Zhou
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Chengyuan Gu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Hai Xu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Linchun Ji
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Benchang Xiao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Jingye Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Zhoujie Qian
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Li Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Yuping Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
| | - Hedong Lu
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaiyin Institute of Technology, Huaian, Jiangsu, China
- National Engineering Research Center for Functional Food, Jiangnan College, Wuxi, Jiangsu, China
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Alvanou MV, Feidantsis K, Staikou A, Apostolidis AP, Michaelidis B, Giantsis IA. Probiotics, Prebiotics, and Synbiotics Utilization in Crayfish Aquaculture and Factors Affecting Gut Microbiota. Microorganisms 2023; 11:1232. [PMID: 37317206 DOI: 10.3390/microorganisms11051232] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 06/16/2023] Open
Abstract
Aquaculture is affected by numerous factors that may cause various health threats that have to be controlled by the most environmentally friendly approaches. In this context, prebiotics, probiotics, and synbiotics are frequently incorporated into organisms' feeding rations to ameliorate the health status of the host's intestine, enhancing its functionality and physiological performance, and to confront increasing antimicrobial resistance. The first step in this direction is the understanding of the complex microbiome system of the organism in order to administer the optimal supplement, in the best concentration, and in the correct way. In the present review, pre-, pro-, and synbiotics as aquaculture additives, together with the factors affecting gut microbiome in crayfish, are discussed, combined with their future prospective outcomes. Probiotics constitute non-pathogenic bacteria, mainly focused on organisms' energy production and efficient immune response; prebiotics constitute fiber indigestible by the host organism, which promote the preferred gastrointestinal tract microorganisms' growth and activity towards the optimum balance between the gastrointestinal and immune system's microbiota; whereas synbiotics constitute their combination as a blend. Among pro-, pre-, and synbiotics' multiple benefits are boosted immunity, increased resistance towards pathogens, and overall welfare promotion. Furthermore, we reviewed the intestinal microbiota abundance and composition, which are found to be influenced by a plethora of factors, including the organism's developmental stage, infection by pathogens, diet, environmental conditions, culture methods, and exposure to toxins. Intestinal microbial communities in crayfish exhibit high plasticity, with infections leading to reduced diversity and abundance. The addition of synbiotic supplementation seems to provide better results than probiotics and prebiotics separately; however, there are still conflicting results regarding the optimal concentration.
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Affiliation(s)
- Maria V Alvanou
- Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece
| | - Konstantinos Feidantsis
- Laboratory of Animal Physiology, Department of Zoology, Faculty of Science, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alexandra Staikou
- Laboratory of Marine and Terrestrial Animal Diversity, Department of Zoology, Facultyof Science, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki,Greece
| | - Apostolos P Apostolidis
- Laboratory of Ichthyology & Fisheries, Department of Animal Production, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Basile Michaelidis
- Laboratory of Animal Physiology, Department of Zoology, Faculty of Science, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis A Giantsis
- Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece
- Laboratory of Ichthyology & Fisheries, Department of Animal Production, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Shi A, Ma H, Shi X, Zhou W, Pan W, Song Y, Chen Q, Yu X, Niu C, Yang Y, Cheng Y, Yang X. Effects of microbe-derived antioxidants on growth, digestive and aminotransferase activities, and antioxidant capacities in the hepatopancreas of Eriocheir sinensis under ammonia nitrogen stress. AQUACULTURE AND FISHERIES 2023. [DOI: 10.1016/j.aaf.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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