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Zheng X, Zhao L, Wu F, Zhou H, Shi F. Screening and Identification of Protease-Producing Microorganisms in the Gut of Gryllotalpa orientalis (Orthoptera: Gryllotalpidae). INSECTS 2024; 15:629. [PMID: 39194833 DOI: 10.3390/insects15080629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2024] [Revised: 08/15/2024] [Accepted: 08/19/2024] [Indexed: 08/29/2024]
Abstract
The insect gut harbors a diverse array of functional microorganisms that warrant further exploration and utilization. However, there is currently a paucity of research reports on the discovery of protease-producing microorganisms with industrial application value in the gut. Here, we employed microbial culturing to screen and identify the protease-producing microorganisms in the gut extract of Gryllotalpa orientalis. Based on morphological, physiological, and biochemical characterization, 16S rRNA sequencing, as well as ANI and dDDH values of whole genome, the protease-producing strains isolated from the insect gut were identified as Priestia aryahattai DBM-1 and DX-4, P. megaterium DX-3, and Serratia surfactantfaciens DBM-5. According to whole-genome analysis, strain DBM-5, which exhibited the highest enzyme activity, possesses abundant membrane transport genes and carbohydrate metabolism enzymes. In contrast, strains DX-3 and DX-4 not only have the ability to hydrolyze proteins but also demonstrate the capability to hydrolyze plant materials. Furthermore, strains that are closely related tend to have similar metabolic product gene clusters in their genomes. The screening and identification of protease resources are essential for the subsequent development and utilization of gut functional microorganisms and genetic resources in insects.
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Affiliation(s)
- Xiang Zheng
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology Co., Ltd., Baoding 071051, China
- Institute of Life Science and Green Development, College of Life Science, Hebei University, Baoding 071002, China
| | - Lu Zhao
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology Co., Ltd., Baoding 071051, China
| | - Fangtong Wu
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology Co., Ltd., Baoding 071051, China
| | - He Zhou
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology Co., Ltd., Baoding 071051, China
| | - Fuming Shi
- Institute of Life Science and Green Development, College of Life Science, Hebei University, Baoding 071002, China
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Yue H, Ma X, Sun S, Hu H, Wu J, Xu T, Huang D, Luo Y, Wu J, Huang T. Diversity and saline-alkali resistance of Coleoptera endosymbiont bacteria in arid and semi-arid climate. Microbiol Spectr 2024; 12:e0023224. [PMID: 38912811 PMCID: PMC11302287 DOI: 10.1128/spectrum.00232-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/21/2024] [Indexed: 06/25/2024] Open
Abstract
Soil salinization usually occurs in arid and semi-arid climate areas from 37 to 50 degrees north latitude and 73 to 123 degrees east longitude. These regions are inhabited by a large number of Coleopteran insects, which play an important role in the ecological cycle. However, little is known about the endosymbiotic microbial taxa and their biological characteristics in these insects. A study of endosymbiotic microorganisms of Coleoptera from Xinjiang, a typical arid and inland saline area, revealed that endosymbiont bacteria with salinity tolerance are common among the endosymbionts of Coleoptera. Functional prediction of the microbiota analysis indicated a higher abundance of inorganic ion transporters and metabolism in these endosymbiont strains. Screening was conducted on the tolerable 11% NaCl levels of Brevibacterium casei G20 (PRJNA754761), and differential metabolite and proteins were performed. The differential metabolites of the strain during the exponential and plateau phases were found to include benzene compounds, organic acids, and their derivatives. These results suggest that the endosymbiotic microorganisms of Coleoptera in this environment have adaptive evolution to extreme environments, and this group of microorganisms is also one of the important resources for mining saline and alkaline-tolerant chassis microorganisms and high-robustness enzymes. IMPORTANCE Coleoptera insects, as the first largest order of insect class, have the characteristics of a wide variety and wide distribution. The arid and semi-arid climate makes it more adaptable. By studying the endosymbiont bacteria of Coleoptera insects, we can systematically understand the adaptability of endosymbiont bacteria to host and special environment. Through the analysis of endosymbiont bacteria of Coleoptera insects in different saline-alkali areas in arid and semi-arid regions of Xinjiang, it was found that bacteria in different host samples were resistant to saline-alkali stress. These results suggest that bacteria and their hosts co-evolved in response to this climate. Therefore, this study is of great significance for understanding the endosymbiont bacteria of Coleoptera insects and obtaining extremophile resources (Saline-alkali-resistant chassis strains with modification potential for the production of bulk chemicals and highly robust industrial enzymes).
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Affiliation(s)
- Haitao Yue
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
- School of Future Technology, Xinjiang University, Urumqi, China
| | - Xiaoyun Ma
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Shuwen Sun
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Hongying Hu
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Jieyi Wu
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Tong Xu
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Danyang Huang
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Yiqian Luo
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Junqiang Wu
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
| | - Tingting Huang
- Laboratory of Synthetic Biology, Department of Bioengineering, School of Life Science and Technology, Xinjiang University, Urumqi, China
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Cao Y, Bian J, Han Y, Liu J, Ma Y, Feng W, Deng Y, Yu Y. Progress and Prospects of Microplastic Biodegradation Processes and Mechanisms: A Bibliometric Analysis. TOXICS 2024; 12:463. [PMID: 39058115 PMCID: PMC11281104 DOI: 10.3390/toxics12070463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/17/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024]
Abstract
In order to visualize the content and development patterns of microplastic biodegradation research, the American Chemical Society (ACS), Elsevier, Springer Link, and American Society for Microbiology (ASM) were searched for the years 2012-2022 using Citespace and VOSvivewer for bibliometrics and visual analysis. The biodegradation processes and mechanisms of microplastics were reviewed on this basis. The results showed a sharp increase in the number of publications between 2012 and 2022, peaking in 2020-2021, with 62 more publications than the previous decade. The University of Chinese Academy of Sciences (UCAS), Northwest A&F University (NWAFU), and Chinese Academy of Agricultural Sciences (CAAS) are the top three research institutions in this field. Researchers are mainly located in China, The United States of America (USA), and India. Furthermore, the research in this field is primarily concerned with the screening of functional microorganisms, the determination of functional enzymes, and the analysis of microplastic biodegradation processes and mechanisms. These studies have revealed that the existing functional microorganisms for microplastic biodegradation are bacteria, predominantly Proteobacteria and Firmicutes; fungi, mainly Ascomycota; and some intestinal microorganisms. The main enzymes secreted in the process are hydrolase, oxidative, and depolymerization enzymes. Microorganisms degrade microplastics through the processes of colonization, biofilm retention, and bioenzymatic degradation. These studies have elucidated the current status of and problems in the microbial degradation of microplastics, and provide a direction for further research on the degradation process and molecular mechanism of functional microorganisms.
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Affiliation(s)
- Yingnan Cao
- Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; (Y.C.); (J.B.); (Y.M.); (Y.Y.)
| | - Jing Bian
- Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; (Y.C.); (J.B.); (Y.M.); (Y.Y.)
| | - Yunping Han
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianguo Liu
- Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; (Y.C.); (J.B.); (Y.M.); (Y.Y.)
| | - Yuping Ma
- Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; (Y.C.); (J.B.); (Y.M.); (Y.Y.)
| | - Weiying Feng
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China; (W.F.); (Y.D.)
| | - Yuxin Deng
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China; (W.F.); (Y.D.)
| | - Yaojiang Yu
- Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region, College of Resources and Environmental Engineering, Inner Mongolia University of Technology, Hohhot 010051, China; (Y.C.); (J.B.); (Y.M.); (Y.Y.)
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Yu Y, Zhang J, Zhu F, Fan M, Zheng J, Cai M, Zheng L, Huang F, Yu Z, Zhang J. Enhanced protein degradation by black soldier fly larvae ( Hermetia illucens L.) and its gut microbes. Front Microbiol 2023; 13:1095025. [PMID: 36704554 PMCID: PMC9871565 DOI: 10.3389/fmicb.2022.1095025] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/16/2022] [Indexed: 01/11/2023] Open
Abstract
Black soldier fly larvae (BSFL) can convert a variety of organic wastes into biomass, and its gut microbiota are involved in this process. However, the role of gut microbes in the nutrient metabolism of BSFL is unclear. In this study, germ-free BSFL (GF) and gnotobiotic BSFL (GB) were evaluated in a high-protein artificial diet model. We used 16S rDNA sequencing, ITS1 sequencing, and network analysis to study gut microbiota in BSFL that degrade proteins. The protein reduction rate of the GB BSFL group was significantly higher (increased by 73.44%) than that of the GF BSFL group. The activity of gut proteinases, such as trypsin and peptidase, in the GB group was significantly higher than the GF group. The abundances of different gut microbes, including Pseudomonas spp., Orbus spp. and Campylobacter spp., were strongly correlated with amino acid metabolic pathways. Dysgonomonas spp. were strongly correlated with protein digestion and absorption. Issatchenkia spp. had a strong correlation with pepsin activity. Campylobacter spp., Pediococcus spp. and Lactobacillus spp. were strongly correlated with trypsin activity. Lactobacillus spp. and Bacillus spp. were strongly correlated with peptidase activity. Gut microbes such as Issatchenkia spp. may promote the gut proteolytic enzyme activity of BSFL and improve the degradation rate of proteins. BSFL protein digestion and absorption involves gut microbiota that have a variety of functions. In BSFL the core gut microbiota help complete protein degradation. These results demonstrate that core gut microbes in BSFL are important in protein degradation.
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Affiliation(s)
- Yongqiang Yu
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Jia Zhang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Fengling Zhu
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Mingxia Fan
- Renmin Hospital of Wuhan University, Wuhan, China
| | - Jinshui Zheng
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Key Laboratory of Agricultural Bioinformatics, Huazhong Agricultural University, Wuhan, China
| | - Minmin Cai
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Longyu Zheng
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Feng Huang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Ziniu Yu
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China
| | - Jibin Zhang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Hongshan Laboratory, Wuhan, China,*Correspondence: Jibin Zhang, ✉
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Kim JH, Ko GP, Son KH, Ku BH, Bang MA, Kang MJ, Park HY. Arazyme in combination with dietary carbohydrolases influences odor emission and gut microbiome in growing-finishing pigs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 848:157735. [PMID: 35926625 DOI: 10.1016/j.scitotenv.2022.157735] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/13/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
This study evaluated the effects of supplementing feed with arazyme and dietary carbohydrolases derived from invertebrate gut-associated symbionts on the noxious gas emissions, gut microbiota, and host-microbiome interactions of pigs. Here, 270 and 260 growing pigs were assigned to control and treatment groups, respectively. The tested feed additives contained a mixture of arazyme (2,500,000 Unit/kg) and synergetic enzymes, xylanase (200,000 Unit/kg) and mannanase (200,000 Unit/kg), derived from insect gut-associated symbionts in a 7.5:1:1 ratio. The control group was fed a basal diet and the treatment group was fed the basal diet supplemented with 0.1 % enzyme mixture (v/v) for 2 months. Odorous gases were monitored in ventilated air from tested houses. Fecal samples were collected from steel plate under the cage at the completion of the experiment to determine chemical composition, odor emissions, and bacterial communities. There was a significant decrease in the concentration of NH3 (22.5 vs. 11.2 ppm; P < 0.05), H2S (7.35 vs. 3.74 ppm; P < 0.05), trimethylamine (TMA) (0.066 vs. 0.001 ppm; P < 0.05), and p-cresol (0.004 ppm vs. 0 ppm; P < 0.05) at 56 d in treatment group compared with the control group. Moreover, fecal analysis results showed that exogenous enzyme supplementation caused a reduction in VFAs and indole content with approximately >60 % and 72.7 %, respectively. The result of gas emission analysis showed that NH3 (9.9 vs. 5.3 ppm; P < 0.05) and H2S (5.8 vs. 4.1 ppm; P < 0.05) were significantly reduced in the treatment group compared to the control group. The gut microbiota of the treatment group differed significantly from that of the control group, and the treatment group altered predicted metabolic pathways, including sulfur and nitrogen related metabolism, urea degradation. The results demonstrated that supplementing feed with arazyme with dietary carbohydrolases effectively controls noxious gas emissions and improves health and meat quality of pigs.
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Affiliation(s)
- Jong-Hoon Kim
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Gwang-Pyo Ko
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Kwang-Hee Son
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Bon-Hwan Ku
- Insect Biotech Co. Ltd., Daejeon 34054, Republic of Korea
| | - Mi-Ae Bang
- Department of Animal Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Man-Jong Kang
- Department of Food Industry Research Center, Jeonnam Bioindustry Foundation, Naju 58275, Republic of Korea.
| | - Ho-Yong Park
- Microbiome Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea.
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6
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Lashgari H, Ramazani A, Aghahosseini H. Preparation of silicone oil nanoemulsion softeners using different surfactants and their effect on physical characteristics of polyester fabric. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hamed Lashgari
- Department of Chemistry, Faculty of Science University of Zanjan Zanjan Iran
| | - Ali Ramazani
- Department of Chemistry, Faculty of Science University of Zanjan Zanjan Iran
- Department of Biotechnology, Research Institute of Modern Biological Techniques (RIMBT) University of Zanjan Zanjan Iran
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Jin T, Tang J, Lyu H, Wang L, Gillmore AB, Schaeffer SM. Activities of Microplastics (MPs) in Agricultural Soil: A Review of MPs Pollution from the Perspective of Agricultural Ecosystems. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4182-4201. [PMID: 35380817 DOI: 10.1021/acs.jafc.1c07849] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Microplastics are emerging persistent pollutants which have attracted increasing attention worldwide. Although microplastics have been widely detected in aquatic environments, their presence in soil ecosystems remains largely unexplored. Plastic debris accumulates in farmland, causing serious environmental problems, which may directly affect food substances or indirectly affect the members in each trophic level of the food chain. This review summarizes the origins, migration, and fate of microplastics in agricultural soils and discusses the interaction between microplastics and the components in farmland from the perspectives of toxicology and accumulation and deduces impacts on ecosystems by linking the organismal response to an ecological role. The effects on farmland ecosystem function are also discussed, emphasizing the supply of agricultural products, food chain pathways, carbon deposition, and nitrogen cycling and soil and water conservation, as microplastic pollution will affect agricultural ecosystems for a long period, posing an ecological risk. Finally, several directions for future research are proposed, which is important for reducing the effect of microplastics in agricultural systems.
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Affiliation(s)
- Tianyue Jin
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Research Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Jingchun Tang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Research Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Honghong Lyu
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Lan Wang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Research Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Alexis B Gillmore
- Department of Biosystems Engineering and Soil Science, University of Tennessee - Knoxville, 2506 East J. Chapman Drive, Knoxville, Tennessee 37996, United States
| | - Sean M Schaeffer
- Department of Biosystems Engineering and Soil Science, University of Tennessee - Knoxville, 2506 East J. Chapman Drive, Knoxville, Tennessee 37996, United States
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Roque-Rodríguez FJ. Controlled Mass Rearing of Cochineal Insect (Hemiptera: Dactylopiidae) Using Two Laboratory-Scale Production Systems in Peru. JOURNAL OF INSECT SCIENCE (ONLINE) 2022; 22:1. [PMID: 34942006 PMCID: PMC8698245 DOI: 10.1093/jisesa/ieab098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Indexed: 06/14/2023]
Abstract
The carmine cochineal (Dactylopius coccus Costa) has high economic value as it is a natural source of carminic acid, an organic chromophore used in a wide range of sectors including pharmaceutics, food, and cosmetics. High demand is fuelling the search for innovative production techniques in order to move away from dependence on the prickly pear, which carries a number of limitations. The aim of this study was to establish cochineal colonies and breed and mass-produce the insects using two laboratory-scale production systems. The first system (STC-01) comprised a prismatic acrylic box with three compartments; synthetic matrices were placed vertically inside the box to provide support and a source of nutrients for the cochineal, and the system was lit artificially during fixed daylight periods. The second system (STC-02) comprised an automated micro-tunnel allowing the insects to move towards the sunlight, containing synthetic matrices arranged horizontally. There was a significant difference in yield between the two systems in a cochineal total life cycle of 120 d (80-90 d harvest period in both cases), with STC-01 being superior and producing a maximum yield of 4.86 ± 0.68 g fresh weight per day per square metre compared with 3.20 ± 0.14 g fresh weight per day per square metre production yield in STC-02. We conclude that cochineal production under controlled artificial conditions is feasible and sustainable, removing the need for natural and biological support and overcoming the environmental limitations posed by traditional production methods.
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Affiliation(s)
- Francisco Javier Roque-Rodríguez
- Department of Pharmacy, Bio-Chemistry and Biotechnology, Faculty of Pharmaceutical, Biochemical and Biotechnological Sciences, Universidad Católica De Santa María, Urb. San José s/n Umacollo, Arequipa 0401, Peru
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Kambiré MS, Gnanwa JM, Boa D, Kouadio EJP, Kouamé LP. Modeling of enzymatic activity of free β-glucosidase from palm weevil, Rhynchophorus palmarum Linn. (Coleoptera: Curculionidae) larvae: Effects of pH and temperature. Biophys Chem 2021; 276:106611. [PMID: 34098161 DOI: 10.1016/j.bpc.2021.106611] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/02/2021] [Accepted: 05/03/2021] [Indexed: 11/20/2022]
Abstract
Palm weevil, Rhynchophorus palmarum L., is an important pest of palm trees (Elaeis guineensis) around the tropical regions. Characterization of their digestive enzymes could be an important stage to develop appropriate pest control strategies. Study of these enzymes could also be of interest in different biotechnological applications. Among digestive enzymes, there is β-glucosidase which hydrolytically catalyzes the β-glycosidic linkage of glycosides. In the present work, the catalytic activity of β-glucosidase in the digestive juice of last larval instar of R. palmarum L. (Rpbgl) has been investigated using p-nitrophenyl-β-D-glucopyranoside (pNPG) as substrate. The "classical" physico-chemical properties for purified Rpbgl have been determined by the help of enzymatic activity modeling. Thus, the values of (325.4 ± 0.2) K, 5.28 ± 0.07 and (37.9 ± 0.6) kJ mol-1 were obtained for optimum temperature, optimum pH and activation energy, respectively. The pK values for enzyme-substrate complex are 4.25 ± 0.07 and 6.20 ± 0.07 for nucleophile and the proton donor, respectively. Enzyme kinetics study was also performed and the values of (127 ± 6) U mg-1 and (0.78 ± 0.08) mM were obtained for Vmax and Km, respectively. Using the Equilibrium model (EM), the thermal inactivation data were analyzed. ΔHeq, Teq, ΔGinact∗ and ΔGcat∗ were found to be (222 ± 4) kJ mol-1, (323.0 ± 0.1) K, (101.9 ± 0.2) kJ mol-1 and (53.37 ± 0.02) kJ mol-1, respectively. These results show that Rpbgl is less stable with a narrow temperature tolerance compared to other β-glucosidases.
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Affiliation(s)
- Marius Sobamfou Kambiré
- Laboratoire de Thermodynamique et de Physico-Chimie du Milieu, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
| | - Jacques Mankambou Gnanwa
- Laboratoire d'Agrovalorisation, Université Jean Lorougnon Guédé, Daloa, BP 150 Daloa, Côte d'Ivoire
| | - David Boa
- Laboratoire de Thermodynamique et de Physico-Chimie du Milieu, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire.
| | - Eugène Jean P Kouadio
- Laboratoire de Biocatalyse et Bioprocédé, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
| | - Lucien Patrice Kouamé
- Laboratoire de Biocatalyse et Bioprocédé, Université Nangui Abrogoua, Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire
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10
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Zheng X, Zhu Q, Zhou Z, Wu F, Chen L, Cao Q, Shi F. Gut bacterial communities across 12 Ensifera (Orthoptera) at different feeding habits and its prediction for the insect with contrasting feeding habits. PLoS One 2021; 16:e0250675. [PMID: 33901256 PMCID: PMC8075264 DOI: 10.1371/journal.pone.0250675] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/12/2021] [Indexed: 01/04/2023] Open
Abstract
Insect microbial symbioses play a critical role in insect lifecycle, and insect gut microbiome could be influenced by many factors. Studies have shown that host diet and taxonomy have a strong influence on insect gut microbial community. In this study, we performed sequencing of V3-V4 region of 16S rRNA gene to compare the composition and diversity of 12 Ensifera from 6 provinces of China. Moreover, the influences of feeding habits and taxonomic status of insects on their gut bacterial community were evaluated, which might provide reference for further application research. The results showed that Proteobacteria (45.66%), Firmicutes (34.25%) and Cyanobacteria (7.7%) were the predominant bacterial phyla in Ensifera. Moreover, the gut bacterial community composition of samples with different feeding habits was significantly different, which was irrespective of their taxa. The highest diversity of gut bacteria was found in the omnivorous Ensifera. Furthermore, common and unique bacteria with biomarkers were found based on the dietary characteristics of the samples. However, the bacterial community structure of the Ensifera samples was significantly different from that of Caelifera. Therefore, we concluded that feeding habits and taxonomic status jointly affect the gut bacterial community composition of the samples from Orthoptera. However, the influence of feeding habit dominates when taxonomy category below the suborder level. In addition, the dominant, common and unique bacterial community structure could be used to predict the contrastic feeding habits of insects belonging to Ensifera.
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Affiliation(s)
- Xiang Zheng
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology, Baoding, China
| | - Qidi Zhu
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Zhijun Zhou
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Fangtong Wu
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology, Baoding, China
| | - Lixuan Chen
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
| | - Qianrong Cao
- Laboratory of Enzyme Preparation, Hebei Research Institute of Microbiology, Baoding, China
| | - Fuming Shi
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding, China
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11
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Insects' potential: Understanding the functional role of their gut microbiome. J Pharm Biomed Anal 2020; 194:113787. [PMID: 33272789 DOI: 10.1016/j.jpba.2020.113787] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022]
Abstract
The study of insect-associated microbial communities is a field of great importance in agriculture, principally because of the role insects play as pests. In addition, there is a recent focus on the potential of the insect gut microbiome in areas such as biotechnology, given some microorganisms produce molecules with biotechnological and industrial applications, and also in biomedicine, since some bacteria and fungi are a reservoir of antibiotic resistance genes (ARGs). To date, most studies aiming to characterize the role of the gut microbiome of insects have been based on high-throughput sequencing of the 16S rRNA gene and/or metagenomics. However, recently functional approaches such as metatranscriptomics, metaproteomics and metabolomics have also been employed. Besides providing knowledge about the taxonomic distribution of microbial populations, these techniques also reveal their functional and metabolic capabilities. This information is essential to gain a better understanding of the role played by microbes comprising the microbial communities in their hosts, as well as to indicate their possible exploitation. This review provides an overview of how far we have come in characterizing insect gut functionality through omics, as well as the challenges and future perspectives in this field.
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12
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Influence of tannase from Serratia marcescens strain IMBL5 on enhancing antioxidant properties of green tea. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101675] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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13
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Zhang J, Gao D, Li Q, Zhao Y, Li L, Lin H, Bi Q, Zhao Y. Biodegradation of polyethylene microplastic particles by the fungus Aspergillus flavus from the guts of wax moth Galleria mellonella. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 704:135931. [PMID: 31830656 DOI: 10.1016/j.scitotenv.2019.135931] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/20/2019] [Accepted: 12/02/2019] [Indexed: 05/06/2023]
Abstract
Polyethylene (PE) products are widely used in daily life, agriculture, and industry because of their convenience and economic value. However, PE is one of the polymer materials remarkably resistant to degradation. Current methods of plastic waste disposal pose a threat to the environment and produce microplastic particles (MPP), which becomes a global environmental concern because of its accumulation. In this study, a PE-degrading fungus Aspergillus flavus named PEDX3, was isolated from the gut contents of wax moth Galleria mellonella. The results indicated that high-density polyethylene (HDPE) MPP was degraded into the MPP with a lower molecular weight by strain PEDX3 after 28 days incubation. In addition, Fourier Transform - Infrared Spectroscopy (FT-IR) results showed the appearance of carbonyl groups and ether groups of MPP, which also validated the degradation of PE. Furthermore, the potential degradation enzymes were investigated by Reverse Transcription-Polymerase Chain Reaction (RT-PCR). Finally, two laccase-like multicopper oxidases (LMCOs) genes, AFLA_006190 and AFLA_053930, displayed up-regulated expression during the degradation process, which may be the candidate PE-degrading enzymes. These results have demonstrated that the A. flavus strain PEDX3 has an ability to degrade microplastic particles and the two PE-degrading enzymes provide a promising application for the PE MPP remediation.
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Affiliation(s)
- Junqing Zhang
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Danling Gao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Quanhao Li
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Yixuan Zhao
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Li Li
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Hanfeng Lin
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, Jiangsu, PR China
| | - Qirui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China.
| | - Yucheng Zhao
- Department of Resources Science of Traditional Chinese Medicines and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, PR China.
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14
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MubarakAli D. Editorial: Special issue on “emerging biotechnology”. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Pérez-Ramírez R, Torres-Castillo JA, Barrientos-Lozano L, Almaguer-Sierra P, Torres-Acosta RI. Schistocerca piceifrons piceifrons (Orthoptera: Acrididae) as a Source of Compounds of Biotechnological and Nutritional Interest. JOURNAL OF INSECT SCIENCE (ONLINE) 2019; 19:5586711. [PMID: 31606745 PMCID: PMC6790246 DOI: 10.1093/jisesa/iez088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Indexed: 06/10/2023]
Abstract
The Central American locust, Schistocerca piceifrons piceifrons (Walker) is a major agricultural pest in Mexico and Central America. Control measures against this pest have generated much environmental damage and substantial financial costs because chemical insecticides are used. Yet various Orthoptera species also appear to be a potential source of nutrients and a source of bioactive metabolites. Here, we studied the presence of secondary metabolites in the adult stage of S. p. piceifrons by applying different colorimetric techniques. Adults were collected from the southern region of Tamaulipas, Mexico, during September-December 2017. These samples were subjected to sequential processes of eviscerating, drying, pulverizing, extracting, and detecting of metabolites. Extractions were carried out in water, 50% ethanol, and absolute ethanol. The presence of phenolic compounds, alkaloids, tannins, saponins, flavonoids, and quantity of antioxidants against the DPPH (2, 2-diphenyl-1-picrylhydrazyl) and ABTS (2, 2'-azino-bis, 3-ethylbenzothiazoline-6-sulfonic acid) radicals were determined and reported. Proximate analysis showed that S. p. piceifrons has a high protein content (80.26%), low fat content (6.21%), and fiber content (12.56%) similar to other Orthoptera species. Chitin and chitosan contents of S. p. piceifrons were 11.88 and 9.11%, respectively; the recovery percentage of chitosan from chitin was 76.71%. Among the Orthoptera, the protein content of this pest is among the highest while its contents of chitin and chitosan are similar to those of other insect species (e.g., Bombix mori Linnaeus [Lepidoptera: Bombycidae]). Our results suggest this pest species is a potential source of bioactive compounds of biotechnological interest for use by pharmaceutical and food industries.
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Affiliation(s)
- Rogelio Pérez-Ramírez
- Tecnológico Nacional de México-Instituto Tecnológico de Cd. Victoria, Ciudad Victoria, Tamaulipas, México
| | - Jorge Ariel Torres-Castillo
- Universidad Autónoma de Tamaulipas-Instituto de Ecología Aplicada, División del Golfo 356, Ciudad Victoria, Tamaulipas, México
| | - Ludivina Barrientos-Lozano
- Tecnológico Nacional de México-Instituto Tecnológico de Cd. Victoria, Ciudad Victoria, Tamaulipas, México
| | - Pedro Almaguer-Sierra
- Tecnológico Nacional de México-Instituto Tecnológico de Cd. Victoria, Ciudad Victoria, Tamaulipas, México
| | - Reyna Ivonne Torres-Acosta
- Universidad Autónoma de Tamaulipas, Unidad Académica Multidisciplinaria Mante, Ciudad Mante, Tamaulipas, México
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