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Jesudoss D, Ponnurangan V, Kumar MPR, Kumar KK, Mannu J, Sankarasubramanian H, Duraialagaraja S, Eswaran K, Loganathan A, Shanmugam V. Advances in breeding, biotechnology, and nanotechnological approaches to combat sheath blight disease in rice. Mol Biol Rep 2024; 51:958. [PMID: 39230778 DOI: 10.1007/s11033-024-09889-5] [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: 05/28/2024] [Accepted: 08/25/2024] [Indexed: 09/05/2024]
Abstract
Sheath blight, caused by the fungus Rhizoctonia solani, is a major problem that significantly impacts rice production and can lead to substantial yield losses. The disease has become increasingly problematic in recent years due to the widespread use of high-yielding semi-dwarf rice cultivars, dense planting, and heavy application of nitrogenous fertilizers. The disease has become more challenging to manage due to its diverse host range and the lack of resistant cultivars. Despite utilizing traditional methods, the problem persists without a satisfactory solution. Therefore, modern approaches, including advanced breeding, transgenic methods, genome editing using CRISPR/Cas9 technology, and nanotechnological interventions, are being explored to develop rice plants resistant to sheath blight disease. This review primarily focuses on these recent advancements in combating the sheath blight disease.
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Affiliation(s)
- David Jesudoss
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Vignesh Ponnurangan
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
- Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Mohana Pradeep Rangaraj Kumar
- Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Krish K Kumar
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Jayakanthan Mannu
- Department of Plant Molecular Biology and Bioinformatics, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Harish Sankarasubramanian
- Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Sudhakar Duraialagaraja
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Kokiladevi Eswaran
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Arul Loganathan
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Varanavasiappan Shanmugam
- Department of Plant Biotechnology, Centre for Plant Molecular Biology & Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India.
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Liu Y, Andin VC, Chor WK, Gunasekaran B, Chong CM, Lee PT, Loh JY. A preliminary study on the effects of substituting fishmeal with defatted black soldier fly (Hermetia illucens) larval meal on Asian seabass (Lates calcarifer) juveniles: Growth performance, feed efficiency, nutrient composition, disease resistance, and economic returns. JOURNAL OF FISH BIOLOGY 2024. [PMID: 39175254 DOI: 10.1111/jfb.15908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 08/02/2024] [Accepted: 08/05/2024] [Indexed: 08/24/2024]
Abstract
This study aims to develop an alternative aquafeed derived from insect meal for Lates calcarifer juveniles, with the objectives of exploring the physiological performance, biological parameters, and economic analysis of substituting fishmeal (FM) with defatted black soldier fly (Hermetia illucens) larvae (BSFL) as part of the diet of L. calcarifer juveniles. Five practical diets were formulated to include 0% (BSFL0, serves as control group), 5% (BSFL5), 10% (BSFL10), 15% (BSFL15), and 20% (BSFL20) of BSFL meal, partially or fully replacing FM, respectively. Each diet was randomly assigned to triplicate groups of 30 fish (10.70 ± 0.07 g) per tank (300 L). The fish were fed twice daily to apparent satiation. A 56-day feeding trial was conducted to evaluate the impacts of defatted BSFL meal replacing FM on the growth performance, feed efficiency, composition analysis of fish muscle, cumulative mortality rate challenged with Vibrio parahaemolyticus, and economic returns of L. calcarifer. These results show that differences in weight gain and specific growth rate among the different treatments were statistically significant (p < 0.05), except for the absence of significant variation (p < 0.05) between BSFL0 and BSFL5, and followed by BSFL10 > BSFL0 > BSFL5 > BSFL15 > BSFL20. However, the feed conversion ratio and protein efficiency ratio showed the opposite trend as above. Although the diets experienced a decline in crude protein content and an increase in crude fat content with the increasing proportion of BSFL substituting FM, the crude protein and fat content of fish muscle were only slightly influenced. It is worth mentioning that levels of nonessential amino acids, delicious amino acids, saturated fatty acids, omega-6, omega-9 in BSFL10 group all showed an increase compared with the control group. After a 7-day challenge test with V. parahaemolyticus, the cumulative mortality rates of the BSFL5 and BSFL10 groups, respectively, dropped to 5.20%, 5.28% compared to the control group's 16.88%; however, the mortality rates of BSFL15 (34.67%) and BSFL20 (41.77%) groups were found to be significantly (p < 0.05) increased. From an economic perspective, the incidence cost for each experimental group showed a trend as BSFL10 < BSFL0 < BSFL5 < BSFL15 < BSFL20, whereas the profit index in each treatment exhibited the opposite trend as above. It was concluded that low (5%) or moderate (10%) levels of BSFL substituting FM in aquaculture feed could improve the physiological performances, disease resistance, and economic returns of L. calcarifer. However, excessive substitution (>15%) leads to a negative effect. From an economic point of view, 10% inclusion of BSFL in practical diets is recommended for L. calcarifer juveniles.
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Affiliation(s)
- Yun Liu
- Health Science Center, Guangxi University of Science and Technology, Liuzhou, China
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia
| | - Victor Charlie Andin
- Marine Programme Conservation Department, World Wide Fund for Nature (WWF, Malaysia), Petaling Jaya, Malaysia
| | - Wei-Kang Chor
- Marine Programme Conservation Department, World Wide Fund for Nature (WWF, Malaysia), Petaling Jaya, Malaysia
| | | | - Chou-Min Chong
- Laboratory of Sustainable Aquaculture (AquaLab), International Institute of Aquaculture and Aquatic Sciences (I-AQUAS), Universiti Putra Malaysia, Port Dickson, Malaysia
| | - Po-Tsang Lee
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Jiun-Yan Loh
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia
- Tropical Futures Institute, James Cook University Singapore, Singapore, Singapore
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Shen W, Xue R, Liu Y, Sun S, Chen X, Sun D, Ouyang H, Li Y, Xu J, Dong X, Ji F, Xu W. Principle Investigation and Method Standardization of Inhibition Zone Assay Based on Antimicrobial Peptides Extracted from Black Soldier Fly Larvae. BIOTECH 2024; 13:31. [PMID: 39189210 PMCID: PMC11348260 DOI: 10.3390/biotech13030031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 07/24/2024] [Accepted: 08/07/2024] [Indexed: 08/28/2024] Open
Abstract
The black soldier fly is a valuable resource insect capable of transforming organic waste while producing antimicrobial peptides (AMPs). The inhibition zone assay (IZA) is a method used to demonstrate the antimicrobial activity of AMPs. This study aimed to examine the experimental principles and establish a standardized IZA method. Results indicated that the AMPs extract consisted of proteins ranging in molecular weights from 0 to 40 kDa. The AMPs diffused radially on an agar plate through an Oxford cup. The diffusion radius was influenced by the concentration and volume of the AMPs but ultimately determined by the mass of the AMPs. The swabbing method was found to be effective for inoculating bacteria on the agar plate. Among the conditions tested, the plate nutrient concentration was the most sensitive factor for the IZA, followed by bacterial concentration and incubation time. Optimal conditions for the IZA included a nutrient plate of 0.5× TSA, a bacterial concentration of 106 CFU/mL, and an incubation time of 12 h, with oxytetracycline (OTC) at 0.01 mg/mL serving as the positive control. The antimicrobial-specific activity of AMPs could be standardized by the ratio of inhibition zone diameters between AMPs and OTC. These findings contribute to the standardization of the IZA method for profiling the antimicrobial activity of AMPs.
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Affiliation(s)
- Wenyue Shen
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Ranxia Xue
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Yanxia Liu
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Shibo Sun
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Xi Chen
- Instrumental Analysis and Research Center, Dalian University of Technology, Panjin Campus, Panjin 124221, China
| | - Dongye Sun
- Instrumental Analysis and Research Center, Dalian University of Technology, Panjin Campus, Panjin 124221, China
| | - Han Ouyang
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Yuxin Li
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Jianqiang Xu
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Xiaoying Dong
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Fengyun Ji
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
| | - Weiping Xu
- School of Chemical Engineering, Ocean, and Life Sciences & Panjin Institute of Industrial Technology, Dalian University of Technology, Panjin Campus, Panjin 124221, China; (W.S.); (J.X.)
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Kofroňová J, Melliti A, Vurm R. Biogas Digestate and Sewage Sludge as Suitable Feeds for Black Soldier Fly ( Hermetia illucens) Larvae. TOXICS 2024; 12:414. [PMID: 38922094 PMCID: PMC11209106 DOI: 10.3390/toxics12060414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/27/2024]
Abstract
Hermetia illucens larvae can use organic wastes as a substrate, which makes them an interesting potential feed. However, waste may contain heavy metals, which are limited in feed. Here, we investigated the ability of H. illucens to grow on organic wastes and measured their heavy metal bioaccumulation. The larvae were fed with food waste, biogas digestates, and sewage sludge. When the first adult fly was visible, the tests were stopped and the larvae immediately processed. The samples (wastes before use, larvae after feeding) were analysed for mineral nutrient and heavy metal content using AAS and ICP-OES, respectively. The results show that the weight of the larvae fed with food waste increased sevenfold, which was broadly in line with expectations. Those fed with sewage sludge and digestate from biogas station increased threefold. While the larvae fed with sewage sludge exceeded the limits for heavy metals, particularly Cd and Pb, in feedstock, those fed with biogas digestate and food waste did not. These findings add to the literature showing the suitability of different wastes as H. illucens feed, and the importance of excluding waste contaminated with heavy metals from larvae intended for use as animal feed, or else diverting these larvae to non-feed uses.
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Affiliation(s)
- Jana Kofroňová
- Department of Environmental Chemistry, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic; (A.M.); (R.V.)
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Lai‐Foenander AS, Kuppusamy G, Manogoran J, Xu T, Chen Y, Tang SY, Ser H, Yow Y, Goh KW, Ming LC, Chuah L, Yap W, Goh B. Black soldier fly ( Hermetia illucens L.): A potential small mighty giant in the field of cosmeceuticals. Health Sci Rep 2024; 7:e2120. [PMID: 38831777 PMCID: PMC11144625 DOI: 10.1002/hsr2.2120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 04/04/2024] [Accepted: 04/27/2024] [Indexed: 06/05/2024] Open
Abstract
Background and Aims Natural products are widely used in the pharmaceutical and cosmetics industries due to their high-value bioactive compounds, which make for "greener" and more environmentally friendly ingredients. These natural compounds are also considered a safer alternative to antibiotics, which may result in antibiotic resistance as well as unfavorable side effects. The development of cosmeceuticals, which combine the cosmetic and pharmaceutical fields to create skincare products with therapeutic value, has increased the demand for unique natural resources. The objective of this review is to discuss the biological properties of extracts derived from larvae of the black soldier fly (BSF; Hermetia illucens), the appropriate extraction methods, and the potential of this insect as a novel active ingredient in the formulation of new cosmeceutical products. This review also addresses the biological actions of compounds originating from the BSF, and the possible association between the diets of BSF larvae and their subsequent bioactive composition. Methods A literature search was conducted using PubMed and Google Scholar to identify and evaluate the various biological properties of the BSF. Results One such natural resource that may be useful in the cosmeceutical field is the BSF, a versatile insect with numerous potential applications due to its nutrient content and scavenging behavior. Previous research has also shown that the BSF has several biological properties, including antimicrobial, antioxidant, anti-inflammatory, and wound healing effects. Conclusion Given the range of biological activities and metabolites possessed by the BSF, this insect may have the cosmeceutical potential to treat a number of skin pathologies.
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Affiliation(s)
- Ashley Sean Lai‐Foenander
- Biofunctional Molecule Exploratory Research Group, School of PharmacyMonash University MalaysiaBandar SunwayMalaysia
| | - Giva Kuppusamy
- Laboratory of Molecular Biology, Department of Research and DevelopmentGK Aqua Sdn Bhd, Port DicksonNegeri SembilanMalaysia
| | - Janaranjani Manogoran
- Laboratory of Molecular Biology, Department of Research and DevelopmentGK Aqua Sdn Bhd, Port DicksonNegeri SembilanMalaysia
| | - Tengfei Xu
- College of Pharmaceutical SciencesZhejiang UniversityHangzhouChina
| | - Yong Chen
- College of Pharmaceutical SciencesZhejiang UniversityHangzhouChina
| | - Siah Ying Tang
- Chemical Engineering Discipline, School of EngineeringMonash University Malaysia, Bandar SunwaySelangor Darul EhsanMalaysia
| | - Hooi‐Leng Ser
- Department of Biological SciencesSchool of Medical and Life Sciences, Sunway UniversityBandar SunwayMalaysia
| | - Yoon‐Yen Yow
- Department of Biological SciencesSchool of Medical and Life Sciences, Sunway UniversityBandar SunwayMalaysia
| | - Khang Wen Goh
- Faculty of Data Science and Information TechnologyINTI International UniversityNilaiMalaysia
| | - Long Chiau Ming
- Department of Medical SciencesSchool of Medical and Life Sciences, Sunway UniversityBandar SunwayMalaysia
| | - Lay‐Hong Chuah
- Biofunctional Molecule Exploratory Research Group, School of PharmacyMonash University MalaysiaBandar SunwayMalaysia
| | - Wei‐Hsum Yap
- School of BiosciencesTaylor's University, Subang JayaSelangorMalaysia
- Centre for Drug Discovery and Molecular Pharmacology (CDDMP)Faculty of Health and Medical Sciences (FHMS), Taylor's University, Subang JayaSelangorMalaysia
| | - Bey‐Hing Goh
- Biofunctional Molecule Exploratory Research Group, School of PharmacyMonash University MalaysiaBandar SunwayMalaysia
- College of Pharmaceutical SciencesZhejiang UniversityHangzhouChina
- Sunway Biofunctional Molecules Discovery Centre (SBMDC)School of Medical and Life Sciences, Sunway UniversitySunwayMalaysia
- Faculty of Health, Australian Research Centre in Complementary and Integrative MedicineUniversity of Technology SydneyUltimoNSWAustralia
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Brulé L, Misery B, Baudouin G, Yan X, Guidou C, Trespeuch C, Foltyn C, Anthoine V, Moriceau N, Federighi M, Boué G. Evaluation of the Microbial Quality of Hermetia illucens Larvae for Animal Feed and Human Consumption: Study of Different Type of Rearing Substrates. Foods 2024; 13:1587. [PMID: 38790886 PMCID: PMC11120926 DOI: 10.3390/foods13101587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/17/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
In the context of climate change and depletion of natural resources, meeting the growing demand for animal feed and human food through sufficient, nutritious, safe, and affordable sources of protein is becoming a priority. The use of Hermetia illucens, the black soldier fly (BSF), has emerged as a strategy to enhance the circularity of the agri-food chain, but its microbiological safety remains a concern. The aim of the present study was to systematically review available data on the microbiological quality of BSF and to investigate the impact of using four different rearing substrates including classic options allowed by the EU regulation (cereals, fruits, vegetables) and options not allowed by EU regulations regarding vegetable agri-food (co-products, food at shelf life, and meat). A total of 13 studies were collected and synthesized, including 910 sample results, while 102 new sample results were collected from the present experiments in three farms. Both datasets combined revealed a high level of contamination of larvae, potentially transmitted through the substrate. The main pathogenic bacteria identified were Bacillus cereus, Clostridium perfringens, Cronobacter spp., Escherichia coli, Salmonella spp., and Staphylococcus aureus coagulase-positive, while Campylobacter spp. and Listeria monocytogenes were not detected. Any of these four substrates were excluded for their use in insect rearing; however, safety concerns were confirmed and must be managed by the operators of the sector using microbial inactivation treatment after the harvest of the larvae in order to propose safe products for the market. The results obtained will guide the definition of the control criteria and optimize the following manufacturing steps.
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Affiliation(s)
- Lenaïg Brulé
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Boris Misery
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Guillaume Baudouin
- Cycle Farms, 6 Boulevard des Entrepreneurs, 49250 Beaufort en Anjou, France;
| | - Xin Yan
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Côme Guidou
- MUTATEC—1998, Chemin du Mitan, 84300 Cavaillon, France; (C.G.); (C.T.)
| | | | - Camille Foltyn
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Valérie Anthoine
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Nicolas Moriceau
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
| | - Michel Federighi
- EnvA/Anses, Laboratoire de Sécurité des Aliments, 94700 Maisons-Alfort, France;
| | - Géraldine Boué
- Oniris, Institut National de Recherche Pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), SECurité des ALIments et Microbiologie (SECALIM), 44300 Nantes, France; (L.B.); (B.M.); (X.Y.); (C.F.); (V.A.); (N.M.)
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Fahmy L, Generalovic T, Ali YM, Seilly D, Sivanesan K, Kalmar L, Pipan M, Christie G, Grant AJ. A novel family of defensin-like peptides from Hermetia illucens with antibacterial properties. BMC Microbiol 2024; 24:167. [PMID: 38755524 PMCID: PMC11097590 DOI: 10.1186/s12866-024-03325-1] [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: 11/06/2023] [Accepted: 05/09/2024] [Indexed: 05/18/2024] Open
Abstract
BACKGROUND The world faces a major infectious disease challenge. Interest in the discovery, design, or development of antimicrobial peptides (AMPs) as an alternative approach for the treatment of bacterial infections has increased. Insects are a good source of AMPs which are the main effector molecules of their innate immune system. Black Soldier Fly Larvae (BSFL) are being developed for large-scale rearing for food sustainability, waste reduction and as sustainable animal and fish feed. Bioinformatic studies have suggested that BSFL have the largest number of AMPs identified in insects. However, most AMPs identified in BSF have not yet undergone antimicrobial evaluation but are promising leads to treat critical infections. RESULTS Jg7197.t1, Jg7902.t1 and Jg7904.t1 were expressed into the haemolymph of larvae following infection with Salmonella enterica serovar Typhimurium and were predicted to be AMPs using the computational tool ampir. The genes encoding these proteins were within 2 distinct clusters in chromosome 1 of the BSF genome. Following removal of signal peptides, predicted structures of the mature proteins were superimposed, highlighting a high degree of structural conservation. The 3 AMPs share primary sequences with proteins that contain a Kunitz-binding domain; characterised for inhibitory action against proteases, and antimicrobial activities. An in vitro antimicrobial screen indicated that heterologously expressed SUMO-Jg7197.t1 and SUMO-Jg7902.t1 did not show activity against 12 bacterial strains. While recombinant SUMO-Jg7904.t1 had antimicrobial activity against a range of Gram-negative and Gram-positive bacteria, including the serious pathogen Pseudomonas aeruginosa. CONCLUSIONS We have cloned and purified putative AMPs from BSFL and performed initial in vitro experiments to evaluate their antimicrobial activity. In doing so, we have identified a putative novel defensin-like AMP, Jg7904.t1, encoded in a paralogous gene cluster, with antimicrobial activity against P. aeruginosa.
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Affiliation(s)
- Leila Fahmy
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Tomas Generalovic
- Better Origin, Future Business Centre, Cambridge, UK
- Department of Zoology, University of Cambridge, Cambridge, UK
| | - Youssif M Ali
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - David Seilly
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Kesavan Sivanesan
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Lajos Kalmar
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Miha Pipan
- Better Origin, Future Business Centre, Cambridge, UK
| | - Graham Christie
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Andrew J Grant
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.
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Kordi M, Talkhounche PG, Vahedi H, Farrokhi N, Tabarzad M. Heterologous Production of Antimicrobial Peptides: Notes to Consider. Protein J 2024; 43:129-158. [PMID: 38180586 DOI: 10.1007/s10930-023-10174-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2023] [Indexed: 01/06/2024]
Abstract
Heavy and irresponsible use of antibiotics in the last century has put selection pressure on the microbes to evolve even faster and develop more resilient strains. In the confrontation with such sometimes called "superbugs", the search for new sources of biochemical antibiotics seems to have reached the limit. In the last two decades, bioactive antimicrobial peptides (AMPs), which are polypeptide chains with less than 100 amino acids, have attracted the attention of many in the control of microbial pathogens, more than the other types of antibiotics. AMPs are groups of components involved in the immune response of many living organisms, and have come to light as new frontiers in fighting with microbes. AMPs are generally produced in minute amounts within organisms; therefore, to address the market, they have to be either produced on a large scale through recombinant DNA technology or to be synthesized via chemical methods. Here, heterologous expression of AMPs within bacterial, fungal, yeast, plants, and insect cells, and points that need to be considered towards their industrialization will be reviewed.
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Affiliation(s)
- Masoumeh Kordi
- Department of Cell & Molecular Biology, Faculty of Life Sciences & Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Parnian Ghaedi Talkhounche
- Department of Cell & Molecular Biology, Faculty of Life Sciences & Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Helia Vahedi
- Department of Cell & Molecular Biology, Faculty of Life Sciences & Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Naser Farrokhi
- Department of Cell & Molecular Biology, Faculty of Life Sciences & Biotechnology, Shahid Beheshti University, Tehran, Iran.
| | - Maryam Tabarzad
- Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Ma C, Huang Z, Feng X, Memon FU, Cui Y, Duan X, Zhu J, Tettamanti G, Hu W, Tian L. Selective breeding of cold-tolerant black soldier fly (Hermetia illucens) larvae: Gut microbial shifts and transcriptional patterns. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 177:252-265. [PMID: 38354633 DOI: 10.1016/j.wasman.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/29/2023] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
The larvae of black soldier fly (BSFL) convert organic waste into insect proteins used as feedstuff for livestock and aquaculture. BSFL production performance is considerably reduced during winter season. Herein, the intraspecific diversity of ten commercial BSF colonies collected in China was evaluated. The Bioforte colony was subjected to selective breeding at 12 °C and 16 °C to develop cold-tolerant BSF with improved production performance. After breeding for nine generations, the weight of larvae, survival rate, and the dry matter conversion rate significantly increased. Subsequently, intestinal microbiota in the cold-tolerant strain showed that bacteria belonging to Morganella, Dysgonomonas, Salmonella, Pseudochrobactrum, and Klebsiella genera were highly represented in the 12 °C bred, while those of Acinetobacter, Pseudochrobactrum, Enterococcus, Comamonas, and Leucobacter genera were significantly represented in the 16 °C bred group. Metagenomic revealed that several animal probiotics of the Enterococcus and Vagococcus genera were greatly enriched in the gut of larvae bred at 16 °C. Moreover, bacterial metabolic pathways including carbohydrate, lipid, amino acids, and cofactors and vitamins, were significantly increased, while organismal systems and human diseases was decreased in the 16 °C bred group. Transcriptomic analysis revealed that the upregulated differentially expressed genes in the 16 °C bred groups mainly participated in Autophagy-animal, AMPK signaling pathway, mTOR signaling pathway, Wnt signaling pathway, FoxO signaling pathway, Hippo signaling pathway at day 34 under 16 °C conditions, suggesting their significant role in the survival of BSFL. Taken together, these results shed lights on the role of intestinal microflora and gene pathways in the adaptation of BSF larvae to cold stress.
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Affiliation(s)
- Chong Ma
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Zhijun Huang
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Xingbao Feng
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Fareed Uddin Memon
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Ying Cui
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Xinyu Duan
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Jianfeng Zhu
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China
| | - Gianluca Tettamanti
- Department of Biotechnology and Life Sciences, University of Insubria, Varese 21100, Italy; Interuniversity Center for Studies on Bioinspired Agro-environmental Technology (BAT Center), University of Napoli Federico II, 80055 Portici, Italy
| | - Wenfeng Hu
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China; Laboratory of Applied Microbiology, College of Food Science, South China Agricultural University, Guangdong 510642, China
| | - Ling Tian
- Guangdong Provincial Key Lab of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; Bioforte Biotechnology (Shenzhen) Co., Ltd., Shenzhen 518118, China.
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10
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Hénault-Ethier L, Quinche M, Reid B, Hotte N, Fortin A, Normandin É, de La Rochelle Renaud G, Rasooli Zadeh A, Deschamps MH, Vandenberg G. Opportunities and challenges in upcycling agri-food byproducts to generate insect manure (frass): A literature review. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 176:169-191. [PMID: 38301601 DOI: 10.1016/j.wasman.2023.12.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 11/24/2023] [Accepted: 12/14/2023] [Indexed: 02/03/2024]
Abstract
A range of issues related to sustainability in the agrifood industry have spurred interest in mass production of insects as human food and animal feed alternatives. This rapidly evolving sector addresses several challenges, including the management of food waste or agrifood by-products and the production of alternative animal proteins demonstrating low environmental impacts that improve sector circularity. The mass production of insects on agrifood processing wastes or by-products represents an opportunity to address these challenges. While the production of insects offers prospects for sustainable protein production, a major side stream is the production of frass or larval excrement including uneaten feed and chitin-rich exuviae (derived from multiple larval moults). The production of each tonne of edible insects generates 2 to 4 tonnes of frass with an interesting potential in agriculture versus traditional organic amendments (compost, manure, biochar). This review aims to demonstrate the characteristics of frass, its common harvest and conditioning methods, its optimal application rates for planting crops, the mechanisms by which it can protect plants against biotic and abiotic stresses and demystify the risks and potential associated with its application in agriculture. The characteristics of frass are compared with those of conventional fertilizers or other. This report also compiles the Canadian, US and European regulatory frameworks as a novel plant fertilizer and aims to pave the way for future research necessary for its valorization in plant production.
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Affiliation(s)
- Louise Hénault-Ethier
- Institut national de la recherche scientifique, Eau Terre, Environnement Research Center, Québec, G1K 9A9, Canada; TriCycle, Montreal, Québec, H4N 2R9, Canada.
| | - Mélissa Quinche
- Institut national de la recherche scientifique, Eau Terre, Environnement Research Center, Québec, G1K 9A9, Canada
| | - Béatrice Reid
- Institut national de la recherche scientifique, Eau Terre, Environnement Research Center, Québec, G1K 9A9, Canada
| | - Noémie Hotte
- TriCycle, Montreal, Québec, H4N 2R9, Canada; Université de Sherbrooke, Québec, J1K 2R1, Canada
| | - Alexis Fortin
- TriCycle, Montreal, Québec, H4N 2R9, Canada; École de Technologie Supérieure, 1100 Rue Notre-Dame Ouest, Montréal, Québec, H3C 1K3, Canada
| | - Étienne Normandin
- TriCycle, Montreal, Québec, H4N 2R9, Canada; Centre sur la Biodiversité, Université de Montréal, 4101 R. Sherbrooke E, Montréal, Québec, H1X 2B2, Canada
| | | | - Aliyeh Rasooli Zadeh
- Institut national de la recherche scientifique, Eau Terre, Environnement Research Center, Québec, G1K 9A9, Canada
| | - Marie-Hélène Deschamps
- Département des sciences animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, G1V 0A6, Canada
| | - Grant Vandenberg
- Département des sciences animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, G1V 0A6, Canada
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11
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Chiang YR, Lin HT, Chang CW, Lin SM, Lin JHY. Dynamic expression of cathepsin L in the black soldier fly (Hermetia illucens) gut during Escherichia coli challenge. PLoS One 2024; 19:e0298338. [PMID: 38451906 PMCID: PMC10919656 DOI: 10.1371/journal.pone.0298338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/18/2024] [Indexed: 03/09/2024] Open
Abstract
The black soldier fly (BSF), Hermetia illucens, has the potential to serve as a valuable resource for waste bioconversion due to the ability of the larvae to thrive in a microbial-rich environment. Being an ecological decomposer, the survival of BSF larvae (BSFL) relies on developing an efficient defense system. Cathepsin L (CTSL) is a cysteine protease that plays roles in physiological and pathological processes. In this study, the full-length of CTSL was obtained from BSF. The 1,020-bp open reading frame encoded a preprotein of 339 amino acids with a predicted molecular weight of 32 kDa. The pro-domain contained the conserved ERFNIN, GNYD, and GCNGG motifs, which are all characteristic of CTSL. Homology revealed that the deduced amino acid sequence of BSF CTSL shared 74.22-72.99% identity with Diptera flies. Immunohistochemical (IHC) analysis showed the CTSL was predominantly localized in the gut, especially in the midgut. The mRNA expression of CTSL in different larval stages was analyzed by quantitative real-time PCR (RT-qPCR), which revealed that CTSL was expressed in the second to sixth instar, with the highest expression in the fifth instar. Following an immune challenge in vivo using Escherichia coli (E. coli), CTSL mRNA was significantly up-regulated at 6 h post-stimulation. The Z-Phe-Arg-AMC was gradually cleaved by the BSFL extract after 3 h post-stimulation. These results shed light on the potential role of CTSL in the defense mechanism that helps BSFL to survive against pathogens in a microbial-rich environment.
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Affiliation(s)
- Yun-Ru Chiang
- School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
- Department of Biotechnology, Ming Chuan University, Taoyuan, Taiwan
| | - Han-Tso Lin
- Department of Biotechnology, Ming Chuan University, Taoyuan, Taiwan
| | - Chao-Wei Chang
- Department of Biotechnology, Ming Chuan University, Taoyuan, Taiwan
| | - Shih-Ming Lin
- Department of Biotechnology and Bioindustry Science, National Cheng Kung University, Tainan, Taiwan
| | - John Han-You Lin
- School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
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12
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Peng J, Li L, Wan Y, Yang Y, An X, Yuan K, Qiu Z, Jiang Y, Guo G, Shen F, Liang G. Molecular characterization and antimicrobial activity of cecropin family in Hermetia illucens. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 152:105111. [PMID: 38081402 DOI: 10.1016/j.dci.2023.105111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023]
Abstract
Antimicrobial peptides are potential alternatives to traditional antibiotics in the face of increasing bacterial resistance. Insects possess many antimicrobial peptides and have become a valuable source of novel and highly effective antimicrobial peptides. Hermetia illucens as a resource insect, for example, has the highest number of antimicrobial peptides of any dipteran. However, most antimicrobial peptides, especially cecropin, have not been comprehensively identified and have not been evaluated for their antimicrobial ability. In this study, we analyzed the localization and gene structure of 33 cecropin molecules in the H. illucens genome and evaluated their activity against common human pathogens. The results showed that 32 cecropin molecules were concentrated on 1 chromosome, most with 2 exons. More importantly, most of the cecropins had a good antibacterial effect against Gram-negative bacteria, and were not hemolytic. The minimum inhibitory concentration (MIC) of the cecropin designated H3 against E. coli was 4 μg/mL. The toxicity, killing time kinetics, and anti-biofilm activity of H3 were further investigated and confirmed its antimicrobial ability. Overall, H3 is a potential candidate for the development of new antimicrobials to treat severe infections caused by Gram-negative pathogens such as E. coli.
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Affiliation(s)
- Jian Peng
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China; Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Lu Li
- Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Department of Intensive Care Unit, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China
| | - Yan Wan
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Yifan Yang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Xiaoqin An
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Kexin Yuan
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Zhilang Qiu
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Yinhui Jiang
- Key Laboratory of Infectious Immune and Antibody Engineering of Guizhou Province, Cellular Immunotherapy Engineering Research Center of Guizhou Province, School of Biology and Engineering/School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Guo Guo
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China
| | - Feng Shen
- Guizhou Institute of Precision Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China; Department of Intensive Care Unit, Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China.
| | - Guiyou Liang
- Translational Medicine Research Center, Guizhou Medical University, Guiyang, 550025, Guizhou, People's Republic of China; Department of Cardiac Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550009, Guizhou, People's Republic of China.
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13
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Costagli S, Abenaim L, Rosini G, Conti B, Giovannoni R. De Novo Genome Assembly at Chromosome-Scale of Hermetia illucens (Diptera Stratiomyidae) via PacBio and Omni-C Proximity Ligation Technology. INSECTS 2024; 15:133. [PMID: 38392552 PMCID: PMC10889594 DOI: 10.3390/insects15020133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/10/2024] [Accepted: 02/13/2024] [Indexed: 02/24/2024]
Abstract
Hermetia illucens is a species of great interest for numerous industrial applications. A high-quality reference genome is already available for H. illucens. However, the worldwide maintenance of numerous captive populations of H. illucens, each with its own genotypic and phenotypic characteristics, made it of interest to perform a de novo genome assembly on one population of H. illucens to define a chromosome-scale genome assembly. By combining the PacBio and the Omni-C proximity ligation technologies, a new H. illucens chromosome-scale genome of 888.59 Mb, with a scaffold N50 value of 162.19 Mb, was assembled. The final chromosome-scale assembly obtained a BUSCO completeness of 89.1%. By exploiting the Omni-C proximity ligation technology, topologically associated domains and other topological features that play a key role in the regulation of gene expression were identified. Further, 65.62% of genomic sequences were masked as repeated sequences, and 32,516 genes were annotated using the MAKER pipeline. The H. illucens Lsp-2 genes that were annotated were further characterized, and the three-dimensional organization of the encoded proteins was predicted. A new chromosome-scale genome assembly of good quality for H. illucens was assembled, and the genomic annotation phase was initiated. The availability of this new chromosome-scale genome assembly enables the further characterization, both genotypically and phenotypically, of a species of interest for several biotechnological applications.
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Affiliation(s)
- Simone Costagli
- Department of Biology, University of Pisa, Via Derna 1, 56126 Pisa, Italy
| | - Linda Abenaim
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Giulia Rosini
- Department of Biology, University of Pisa, Via Derna 1, 56126 Pisa, Italy
| | - Barbara Conti
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
- Nutrafood Center, University of Pisa, Via del Borghetto 80, 56126 Pisa, Italy
- CIRSEC, Center for Climate Change Impact, Centro di Ricerche Agro-Ambientali, University of Pisa, 56126 Pisa, Italy
| | - Roberto Giovannoni
- Department of Biology, University of Pisa, Via Derna 1, 56126 Pisa, Italy
- Nutrafood Center, University of Pisa, Via del Borghetto 80, 56126 Pisa, Italy
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14
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Mannaa M, Mansour A, Park I, Lee DW, Seo YS. Insect-based agri-food waste valorization: Agricultural applications and roles of insect gut microbiota. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 17:100287. [PMID: 37333762 PMCID: PMC10275724 DOI: 10.1016/j.ese.2023.100287] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/26/2023] [Accepted: 05/10/2023] [Indexed: 06/20/2023]
Abstract
Meeting the demands of the growing population requires increased food and feed production, leading to higher levels of agri-food waste. As this type of waste seriously threatens public health and the environment, novel approaches to waste management should be developed. Insects have been proposed as efficient agents for biorefining waste, producing biomass that can be used for commercial products. However, challenges in achieving optimal outcomes and maximizing beneficial results remain. Microbial symbionts associated with insects are known to have a critical role in the development, fitness, and versatility of insects, and as such, they can be utilized as targets for the optimization of agri-food waste insect-based biorefinery systems. This review discusses insect-based biorefineries, focusing on the agricultural applications of edible insects, mainly as animal feed and organic fertilizers. We also describe the interplay between agri-food waste-utilizing insects and associated microbiota and the microbial contribution in enhancing insect growth, development, and involvement in organic waste bioconversion processes. The potential contribution of insect gut microbiota in eliminating pathogens, toxins, and pollutants and microbe-mediated approaches for enhancing insect growth and the bioconversion of organic waste are also discussed. The present review outlines the benefits of using insects in agri-food and organic waste biorefinery systems, describes the roles of insect-associated microbial symbionts in waste bioconversion processes, and highlights the potential of such biorefinery systems in addressing the current agri-food waste-related challenges.
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Affiliation(s)
- Mohamed Mannaa
- Department of Integrated Biological Science, Pusan National University, Busan, 46241, Republic of Korea
- Department of Plant Pathology, Cairo University, Faculty of Agriculture, Giza, 12613, Egypt
| | - Abdelaziz Mansour
- Department of Integrated Biological Science, Pusan National University, Busan, 46241, Republic of Korea
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - Inmyoung Park
- School of Food and Culinary Arts, Youngsan University, Bansong Beltway, Busan, 48015, Republic of Korea
| | - Dae-Weon Lee
- Department of SmartBio, Kyungsung University, Busan, 48434, Republic of Korea
| | - Young-Su Seo
- Department of Integrated Biological Science, Pusan National University, Busan, 46241, Republic of Korea
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15
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Rebora M, Salerno G, Piersanti S, Saitta V, Morelli Venturi D, Li C, Gorb S. The armoured cuticle of the black soldier fly Hermetia illucens. Sci Rep 2023; 13:22101. [PMID: 38092863 PMCID: PMC10719276 DOI: 10.1038/s41598-023-49549-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 12/09/2023] [Indexed: 12/17/2023] Open
Abstract
We characterise in detail the larval and pupal cuticle of the black soldier fly Hermetia illucens L. (Diptera: Stratiomyidae), a key insect species in circular economy. In particular, we focus on ultrastructure using scanning and transmission electron microscopy, material characterization and composition (elements and minerals) with confocal laser scanning microscope, energy dispersive X-ray microanalysis, powder X-ray diffraction and mechanical properties with nanoindentation measurements. Calcium carbonate crystallizes on the epicuticle as blocks of calcite in the pupal cuticle. Calcium carbonate granules are stored in two specialised Malpighian tubules. CaCO3 is already present in the cuticle of young larval instars, but it is mainly in the form of amorphous calcium carbonate while the amount of calcite increases during larval development. The presence of calcite leads to cuticle hardening. Larval and pupal cuticles contain large amounts of resilin which guarantee cuticle flexibility.
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Affiliation(s)
- Manuela Rebora
- Dipartimento di Chimica, Biologia e Biotecnologie, University of Perugia, Via Elce di Sotto 8, 06121, Perugia, Italy
| | - Gianandrea Salerno
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, University of Perugia, Borgo XX Giugno, 06121, Perugia, Italy.
| | - Silvana Piersanti
- Dipartimento di Chimica, Biologia e Biotecnologie, University of Perugia, Via Elce di Sotto 8, 06121, Perugia, Italy
| | - Valerio Saitta
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, University of Perugia, Borgo XX Giugno, 06121, Perugia, Italy
| | - Diletta Morelli Venturi
- Dipartimento di Chimica, Biologia e Biotecnologie, University of Perugia, Via Elce di Sotto 8, 06121, Perugia, Italy
| | - Chuchu Li
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, Am Botanischen Garten 9, 24098, Kiel, Germany
| | - Stanislav Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, Am Botanischen Garten 9, 24098, Kiel, Germany.
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16
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Beesigamukama D, Tanga CM, Sevgan S, Ekesi S, Kelemu S. Waste to value: Global perspective on the impact of entomocomposting on environmental health, greenhouse gas mitigation and soil bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166067. [PMID: 37544444 PMCID: PMC10594063 DOI: 10.1016/j.scitotenv.2023.166067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
The innovative use of insects to recycle low-value organic waste into value-added products such as food, feed and other products with a low ecological footprint has attracted rapid attention globally. The insect frass (a combination unconsumed substrate, faeces, and exuviae) contains substantial amounts of nutrients and beneficial microbes that could utilised as fertilizer. We analyse research trends and report on the production, nutrient quality, maturity and hygiene status of insect-composted organic fertilizer (ICOF) generated from different organic wastes, and their influence on soil fertility, pest and pathogen suppression, and crop productivity. Lastly, we discuss the impact of entomocomposting on greenhouse gas mitigation and provide critical analysis on the regulatory aspects of entomocomposting, and utilization and commercialisation ICOF products. This information should be critical to inform research and policy decisions aimed at developing and promoting appropriate standards and guidelines for quality production, sustainable utilization, and successful integration of entomocompost into existing fertilizer supply chains and cropping systems.
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Affiliation(s)
- Dennis Beesigamukama
- International Centre of Insect Physiology and Ecology, P. O. Box 30772-00100, Nairobi, Kenya.
| | - Chrysantus M Tanga
- International Centre of Insect Physiology and Ecology, P. O. Box 30772-00100, Nairobi, Kenya.
| | - Subramanian Sevgan
- International Centre of Insect Physiology and Ecology, P. O. Box 30772-00100, Nairobi, Kenya
| | - Sunday Ekesi
- International Centre of Insect Physiology and Ecology, P. O. Box 30772-00100, Nairobi, Kenya
| | - Segenet Kelemu
- International Centre of Insect Physiology and Ecology, P. O. Box 30772-00100, Nairobi, Kenya
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17
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Liu M, Xiao Y, Yang Y, Zhou S, Shen X, Zhang Y, Wang W. Carrier proteins boost expression of PR-39-derived peptide in Pichia pastoris. J Appl Microbiol 2023; 134:lxad297. [PMID: 38052427 DOI: 10.1093/jambio/lxad297] [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: 07/12/2023] [Revised: 10/16/2023] [Accepted: 12/04/2023] [Indexed: 12/07/2023]
Abstract
AIMS Multidrug resistance presents difficulties in preventing and treating bacterial infections. Proline-rich antimicrobial peptides (PrAMPs) inhibit bacterial growth by affecting the intracellular targets rather than by permeabilizing the membrane. The aim of this study was to develop a yeast-based fusion carrier system using calmodulin (CaM) and xylanase (XynCDBFV) as two carriers to express the model PrAMP PR-39-derived peptide (PR-39-DP) in Pichia pastoris. METHODS AND RESULTS Fusion protein secreted into the culture supernatant was purified in a one-step on-column digestion using human rhinovirus 3C protease, obtaining the target peptide PR-39-DP. The growth curves of Escherichia coli were monitored by recording the OD600 values of the bacteria. The antibacterial activity of PR-39-DP was evaluated in killing assays performed on E. coli. The yield of PR-39-DP was 1.0-1.2 mg l-1 in the CaM fusion carrier system, approximately three times that of the XynCDBFV fusion carrier system. The minimal inhibitory concentration of PR-39-DP was ∼10.5 µg ml-1. CONCLUSIONS CaM and XynCDBFV provide increased stability and promote the expression and secretion of active PR-39-DP.
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Affiliation(s)
- Minzhi Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
- Key Laboratory of Biosynthesis of Natural Products of National Health Commission of the People's Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yao Xiao
- Department of Pharmacy, The Fourth Affiliated Hospital of China Medical University, Shenyang 100032, China
| | - Yan Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
- Key Laboratory of Biosynthesis of Natural Products of National Health Commission of the People's Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Sihan Zhou
- Key Laboratory of Biosynthesis of Natural Products of National Health Commission of the People's Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Xin Shen
- Key Laboratory of Biosynthesis of Natural Products of National Health Commission of the People's Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Youxi Zhang
- Department of Pharmacy, The Fourth Affiliated Hospital of China Medical University, Shenyang 100032, China
| | - Wei Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
- Key Laboratory of Biosynthesis of Natural Products of National Health Commission of the People's Republic of China, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
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18
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Fahmy L, Ali YM, Seilly D, McCoy R, Owens RM, Pipan M, Christie G, Grant AJ. An attacin antimicrobial peptide, Hill_BB_C10074, from Hermetia illucens with anti-Pseudomonas aeruginosa activity. BMC Microbiol 2023; 23:378. [PMID: 38036998 PMCID: PMC10690985 DOI: 10.1186/s12866-023-03131-1] [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: 08/16/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND There is a global need to develop new therapies to treat infectious diseases and tackle the rise in antimicrobial resistance. To date, the larvae of the Black Solider Fly, Hermetia illucens, have the largest repertoire of antimicrobial peptides derived from insects. Antimicrobial peptides are of particular interest in the exploration of alternative antimicrobials due to their potent action and reduced propensity to induce resistance compared with more traditional antibiotics. RESULTS The predicted attacin from H. illucens, Hill_BB_C10074, was first identified in the transcriptome of H. illucens populations that had been fed a plant-oil based diet. In this study, recombinant Hill_BB_C10074 (500 µg/mL), was found to possess potent antimicrobial activity against the serious Gram-negative pathogen, Pseudomonas aeruginosa. Sequence and structural homology modelling predicted that Hill_BB_C10074 formed a homotrimeric complex that may form pores in the Gram-negative bacterial outer membrane. In vitro experiments defined the antimicrobial action of Hill_BB_C10074 against P. aeruginosa and transmission electron microscopy and electrochemical impedance spectroscopy confirmed the outer membrane disruptive power of Hill_BB_C10074 which was greater than the clinically relevant antibiotic, polymyxin B. CONCLUSIONS Combining predictive tools with in vitro approaches, we have characterised Hill_BB_C10074 as an important insect antimicrobial peptide and promising candidate for the future development of clinical antimicrobials.
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Affiliation(s)
- Leila Fahmy
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Youssif M Ali
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - David Seilly
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Reece McCoy
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Miha Pipan
- Better Origin, Future Business Centre, Cambridge, UK
| | - Graham Christie
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Andrew J Grant
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.
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19
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Eke M, Tougeron K, Hamidovic A, Tinkeu LSN, Hance T, Renoz F. Deciphering the functional diversity of the gut microbiota of the black soldier fly (Hermetia illucens): recent advances and future challenges. Anim Microbiome 2023; 5:40. [PMID: 37653468 PMCID: PMC10472620 DOI: 10.1186/s42523-023-00261-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
Bioconversion using insects is a promising strategy to convert organic waste (catering leftovers, harvest waste, food processing byproducts, etc.) into biomass that can be used for multiple applications, turned into high added-value products, and address environmental, societal and economic concerns. Due to its ability to feed on a tremendous variety of organic wastes, the black soldier fly (Hermetia illucens) has recently emerged as a promising insect for bioconversion of organic wastes on an industrial scale. A growing number of studies have highlighted the pivotal role of the gut microbiota in the performance and health of this insect species. This review aims to provide a critical overview of current knowledge regarding the functional diversity of the gut microbiota of H. illucens, highlighting its importance for bioconversion, food safety and the development of new biotechnological tools. After providing an overview of the different strategies that have been used to outline the microbial communities of H. illucens, we discuss the diversity of these gut microbes and the beneficial services they can provide to their insect host. Emphasis is placed on technical strategies and aspects of host biology that require special attention in the near future of research. We also argue that the singular digestive capabilities and complex gut microbiota of H. illucens make this insect species a valuable model for addressing fundamental questions regarding the interactions that insects have evolved with microorganisms. By proposing new avenues of research, this review aims to stimulate research on the microbiota of a promising insect to address the challenges of bioconversion, but also fundamental questions regarding bacterial symbiosis in insects.
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Affiliation(s)
- Maurielle Eke
- Biodiversity Research Centre, Earth and Life Institute, UCLouvain, 1348, Louvain-la-Neuve, Belgium
- Department of Biological Sciences, University of Ngaoundéré, PO BOX 454, Ngaoundéré, Cameroon
| | - Kévin Tougeron
- UMR CNRS 7058 EDYSAN (Ecologie et Dynamique des Systèmes Anthropisés), Université de Picardie Jules Verne, Amiens, 80039 France
- Research Institute in Bioscience, Université de Mons, Mons, 7000 Belgium
| | - Alisa Hamidovic
- Biodiversity Research Centre, Earth and Life Institute, UCLouvain, 1348, Louvain-la-Neuve, Belgium
| | - Leonard S. Ngamo Tinkeu
- Department of Biological Sciences, University of Ngaoundéré, PO BOX 454, Ngaoundéré, Cameroon
| | - Thierry Hance
- Biodiversity Research Centre, Earth and Life Institute, UCLouvain, 1348, Louvain-la-Neuve, Belgium
| | - François Renoz
- Biodiversity Research Centre, Earth and Life Institute, UCLouvain, 1348, Louvain-la-Neuve, Belgium
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, 305-8634 Japan
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20
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Meng Y, Zhang X, Zhang Z, Li J, Zheng P, Li J, Xu J, Xian J, Lu Y. Effects of Microorganisms on Growth Performance, Body Composition, Digestive Enzyme Activity, Intestinal Bacteria Flora and Antimicrobial Peptide (AMP) Content of Black Soldier Fly Larvae ( Hermetia illucens). Animals (Basel) 2023; 13:2722. [PMID: 37684985 PMCID: PMC10487262 DOI: 10.3390/ani13172722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Escherichia coli (EC), Staphylococcus aureus (SA), Bacillus subtilis (BS), Rhodopseudomonas palustris (RP), Saccharomyces cerevisiae (SC) and Lactobacillus plantarum (LP) were selected as feed additives for black soldier fly (Hermetia illucens) by tracking the growth performance, proximate composition, digestive ability and antibacterial peptides (AMPs) content in the first trial. Microorganism efficiency screening results showed that RP could improve growth performance, digestive ability and AMP content of H. illucens. Therefore, RP was selected to prepare the diets and was incorporated into diets for H. illucens at levels of 0 (R0), 1.22 × 106 (R1), 1.22 × 107 (R2), 1.22 × 108 (R3), 1.22 × 109 (R4) and 1.22 × 1010 (R5) CFU/g. After 5 d of feeding, larvae fed the R2-R5 diets had higher weight gain and specific growth rates. Different concentrations of RP had no significant effect on larval body composition. R4-R5 could improve the digestibility and expression of AMPs in larvae. Moreover, RP could significantly increase the abundance of Lactobacillus and Rhodopseudomonas and decrease the abundance of Proteus and Corynebacterium. Therefore, RP is superior to the other strains as a feed additive for H. illucens larvae, and we recommend the addition of 1.22 × 109-1.22 × 1010 CFU/g RP to promote the growth and AMP content of H. illucens.
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Affiliation(s)
- Yongqi Meng
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Ocean College, Hainan University, Haikou 570228, China
| | - Xiuxia Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Zelong Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Jiajun Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Peihua Zheng
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Juntao Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Jiarui Xu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jianan Xian
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Ocean College, Hainan University, Haikou 570228, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
| | - Yaopeng Lu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-Resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou 571101, China
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21
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Candian V, Savio C, Meneguz M, Gasco L, Tedeschi R. Effect of the rearing diet on gene expression of antimicrobial peptides in Hermetia illucens (Diptera: Stratiomyidae). INSECT SCIENCE 2023; 30:933-946. [PMID: 36542450 DOI: 10.1111/1744-7917.13165] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/24/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Insect proteins have been proposed for human and animal food production. Safeguarding the health status of insects in mass rearing allows to obtain high-quality products and to avoid severe economic losses due to entomopathogens. Therefore, new strategies for preserving insect health must be implemented. Modulation of the insect immune system through the diet is one such strategy. We evaluated gene expression of two antimicrobial peptides (one defensin and one cecropin) in Hermetia illucens (L.) (Diptera: Stratiomyidae) reared on different diets. Analyses were performed on prepupae and 10-day-old larvae reared on cereal- and municipal organic waste-based diets and on only prepupae reared on a cereal-based diet supplemented with sunflower, corn, or soybean oil. The inclusion of sunflower oil at different points in the cereal-based diet was also evaluated. Moreover, diet-driven differences in the inhibitory activity of the hemolymph were tested against Escherichia coli DH5α and Micrococcus yunnanensis HI55 using diffusion assays in solid media. Results showed that a municipal organic waste-based diet produced a significant overexpression of antimicrobial peptides only in prepupae. Inclusion of vegetable oils caused an upregulation of at least one peptide, except for the corn oil. Higher expression of both genes was observed when sunflower oil was added 5 days before pupation. All hemolymph samples showed an inhibitory activity against bacteria colonies. Our results suggest that municipal organic waste-based diet and vegetable oil-added diet may successfully impact the immune system of H. illucens. Such alternatives may also exist for other species of economic interest.
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Affiliation(s)
- Valentina Candian
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Grugliasco, Italy
| | - Carlotta Savio
- INRAE, Micalis, GME, University of Paris Saclay, Jouy-en-Josas, France
- Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands
| | | | - Laura Gasco
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Grugliasco, Italy
| | - Rosemarie Tedeschi
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Grugliasco, Italy
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22
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Li T, Khan S, Wei M, Li H, Wen T, Guo J, Jin D. Utilizing Black Soldier Fly Larvae to Improve Bioconversion and Reduce Pollution: A Sustainable Method for Efficient Treatment of Mixed Wastes of Wet Distiller Grains and Livestock Manure. Molecules 2023; 28:5735. [PMID: 37570704 PMCID: PMC10421123 DOI: 10.3390/molecules28155735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Widespread environmental contamination caused by huge amounts of wastes generated by human activities has become a critical global concern that requires urgent action. The black soldier fly (BSFL) has gradually been used to treat different wastes due to high efficiency and low cost. However, little information is available regarding the treatment of mixed wastes by BSFLs. The impact of BSFLs on conversion of cow manure (COM) and pig manure (PM) via the incorporation of wet distiller grains (WDG) was assessed. Results demonstrate that the waste reduction rate was increased by 20% by incorporating 45% WDG to COM and PM. The bioconversion rate of BSFLs in COM and PM also increased from 1.20 ± 0.02% and 0.92 ± 0.02% to 10.54 ± 0.06% and 10.05 ± 0.11%, respectively. Total nitrogen content and δ15N/14N ratios of WDG + COM and WDG + PM were found to be significantly lower than those of COM and PM alone (p < 0.01). The organic matter changes during manure degradation were further analyzed by combing ultraviolet-visible spectrum (UV-vis) with excitation-emission matrix (EEM) spectroscopy techniques and fluorescence area integration (FRI) method. The UV-vis spectra results indicate that the addition of WDG to manures resulted in the decreased aromaticity and molecular weight of the waste. EEM spectra demonstrated that the accumulative Pi,n values of regions III and V in COM, COM + WDG, PM, and PM + WDG were 58%, 49%, 52% and 63%, respectively. These results not only provide new insights into the potential of mixed wastes for BSFL treatment but also contribute to the basis for the formulation of effective management measurements that reduce and/or reuse these wastes.
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Affiliation(s)
- Tao Li
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
| | - Samiullah Khan
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
| | - Mao Wei
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
| | - Haiyin Li
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
| | - Tingchi Wen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
| | - Jianjun Guo
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
| | - Daochao Jin
- Institute of Entomology, Guizhou University, Guiyang 550025, China; (T.L.); (S.K.); (M.W.); (H.L.)
- Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture and Rural Affairs, Guiyang 550025, China
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23
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Zhao Z, Yu C, Yang C, Gao B, Jiménez N, Wang C, Li F, Ao Y, Zheng L, Huang F, Tomberlin JK, Ren Z, Yu Z, Zhang J, Cai M. Mitigation of antibiotic resistome in swine manure by black soldier fly larval conversion combined with composting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 879:163065. [PMID: 36966826 DOI: 10.1016/j.scitotenv.2023.163065] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023]
Abstract
The increasing prevalence of antibiotic resistance genes (ARGs) in animal manure has attracted considerable attention because of their potential contribution to the development of multidrug resistance worldwide. Insect technology may be a promising alternative for the rapid attenuation of ARGs in manure; however, the underlying mechanism remains unclear. This study aimed to evaluate the effects of black soldier fly (BSF, Hermetia illucens [L.]) larvae conversion combined with composting on ARGs dynamics in swine manure and to uncover the mechanisms through metagenomic analysis. Compared to natural composting (i.e. without BSF), BSFL conversion combined with composting reduced the absolute abundance of ARGs by 93.2 % within 28 days. The rapid degradation of antibiotics and nutrient reformulation during BSFL conversion combined with composting indirectly altered manure bacterial communities, resulting in a lower abundance and richness of ARGs. The number of main antibiotic-resistant bacteria (e.g., Prevotella, Ruminococcus) decreased by 74.9 %, while their potential antagonistic bacteria (e.g., Bacillus, Pseudomonas) increased by 128.7 %. The number of antibiotic-resistant pathogenic bacteria (e.g., Selenomonas, Paenalcaligenes) decreased by 88.3 %, and the average number of ARGs carried by each human pathogenic bacterial genus declined by 55.8 %. BSF larvae gut microbiota (e.g., Clostridium butyricum, C. bornimense) could help reduce the risk of multidrug-resistant pathogens. These results provide insight into a novel approach to mitigate multidrug resistance from the animal industry in the environment by using insect technology combined with composting, in particular in light of the global "One Health" requirements.
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Affiliation(s)
- Zhengzheng Zhao
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | - Chan Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Chongrui Yang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | - Bingqi Gao
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | - Núria Jiménez
- Department of Chemical Engineering, Vilanova i la Geltrú School of Engineering (EPSEVG), Universitat Politècnica de Catalunya · BarcelonaTech, Vilanova i la Geltrú 08800, Spain
| | - Chen Wang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | - Fang Li
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Center of Microbial Pesticides, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | - Yue Ao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, 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 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, 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 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China
| | | | - Zhuqing Ren
- Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China; Key Laboratory of Agriculture Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science, Huazhong Agricultural University, Wuhan, Hubei 430070, 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 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, 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 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, 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 430070, China; Hubei Hongshan Laboratory, Wuhan 430070, Hubei, China.
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24
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Scieuzo C, Giglio F, Rinaldi R, Lekka ME, Cozzolino F, Monaco V, Monti M, Salvia R, Falabella P. In Vitro Evaluation of the Antibacterial Activity of the Peptide Fractions Extracted from the Hemolymph of Hermetia illucens (Diptera: Stratiomyidae). INSECTS 2023; 14:insects14050464. [PMID: 37233092 DOI: 10.3390/insects14050464] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
Antimicrobial peptides (AMPs) are a chemically and structurally heterogeneous family of molecules produced by a large variety of living organisms, whose expression is predominant in the sites most exposed to microbial invasion. One of the richest natural sources of AMPs is insects which, over the course of their very long evolutionary history, have adapted to numerous and different habitats by developing a powerful innate immune system that has allowed them to survive but also to assert themselves in the new environment. Recently, due to the increase in antibiotic-resistant bacterial strains, interest in AMPs has risen. In this work, we detected AMPs in the hemolymph of Hermetia illucens (Diptera, Stratiomyidae) larvae, following infection with Escherichia coli (Gram negative) or Micrococcus flavus (Gram positive) and from uninfected larvae. Peptide component, isolated via organic solvent precipitation, was analyzed by microbiological techniques. Subsequent mass spectrometry analysis allowed us to specifically identify peptides expressed in basal condition and peptides differentially expressed after bacterial challenge. We identified 33 AMPs in all the analyzed samples, of which 13 are specifically stimulated by Gram negative and/or Gram positive bacterial challenge. AMPs mostly expressed after bacterial challenge could be responsible for a more specific activity.
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Affiliation(s)
- Carmen Scieuzo
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
- Spinoff XFlies s.r.l., University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Fabiana Giglio
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Roberta Rinaldi
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Marilena E Lekka
- Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
| | - Flora Cozzolino
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- CEINGE Advanced Biotechnologies, University of Naples Federico II, 80145 Naples, Italy
| | - Vittoria Monaco
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- CEINGE Advanced Biotechnologies, University of Naples Federico II, 80145 Naples, Italy
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- CEINGE Advanced Biotechnologies, University of Naples Federico II, 80145 Naples, Italy
| | - Rosanna Salvia
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
- Spinoff XFlies s.r.l., University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Patrizia Falabella
- Department of Sciences, University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
- Spinoff XFlies s.r.l., University of Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
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25
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Shah P, Ruan X, van Loon JJA, Dicke M. Temperature-modulated host-pathogen interactions between Hermetia illucens L. (Diptera: Stratiomyidae) and Pseudomonas protegens Pf-5. J Invertebr Pathol 2023; 198:107934. [PMID: 37169329 DOI: 10.1016/j.jip.2023.107934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/28/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023]
Abstract
Temperature is an important abiotic factor influencing the survival and fitness of pathogens as well as their hosts. We investigated the effect of three temperatures (18°C, 27°C and 37°C) on survival and performance of black soldier fly larvae (BSFL), Hermetia illucens L., upon infection by an entomopathogenic Gram-negative bacterium, Pseudomonas protegens Pf-5. The effect of different temperatures on pathogen fitness was investigated both in vivo and in vitro. Pathogen performance under exposure to the insect antimicrobial peptide cecropin was investigated at the three temperatures using radial-diffusion plate assays. Higher rearing temperatures resulted in higher larval survival, increased larval weight, and higher inhibitory activity of cecropin against P. protegens Pf-5. At higher temperature, bacterial growth, both in vivo and in vitro, was reduced, resulting in increased BSFL survival. These observations collectively indicate the important effect of rearing temperature on host-pathogen interactions and the possibility to apply temperature treatment in reducing entomopathogen effects in BSFL.
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Affiliation(s)
- Parth Shah
- Laboratory of Entomology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Xinyan Ruan
- Laboratory of Entomology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Joop J A van Loon
- Laboratory of Entomology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Marcel Dicke
- Laboratory of Entomology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands.
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26
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Deng X, Liu L, Deng J, Zha X. Specific Expression of Antimicrobial Peptides from the Black Soldier Fly in the Midgut of Silkworms ( Bombyx mori) Regulates Silkworm Immunity. INSECTS 2023; 14:insects14050443. [PMID: 37233071 DOI: 10.3390/insects14050443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/26/2023] [Accepted: 05/05/2023] [Indexed: 05/27/2023]
Abstract
Antimicrobial peptides are molecules with strong antimicrobial activity and are of substantial interest for the immunization of insects. As a type of dipteran insect that can turn organic waste into animal feed, the black soldier fly (BSF) can "turn waste into treasure". In this study, we investigated the antimicrobial activity of the antimicrobial peptide genes, HiCG13551 and Hidiptericin-1, of BSF in silkworms, by overexpressing the genes specifically in the midgut. Changes in the mRNA levels of the transgenic silkworms after infection with Staphylococcus aureus were evaluated using transcriptome sequencing. The results showed that Hidiptericin-1 had stronger antimicrobial activity than HiCG13551. KEGG enrichment analysis showed that the differentially expressed genes in the transgenic overexpressed Hidiptericin-1 silkworm lines from the D9L strain were mainly enriched in the starch and sucrose metabolism, pantothenate and CoA biosynthesis, drug metabolism (other enzymes), biotin metabolism, platinum drug resistance, galactose metabolism, and pancreatic secretion pathways. In addition, immune-related genes were up-regulated in this transgenic silkworm strain. Our study may provide new insights for future immune studies on insects.
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Affiliation(s)
- Xuan Deng
- State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Lianlian Liu
- State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Jing Deng
- State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xingfu Zha
- State Key Laboratory of Resource Insects, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
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27
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Ge C, Liang X, Wu X, Wang J, Wang H, Qin Y, Xue M. Yellow mealworm (Tenebrio Molitor) enhances intestinal immunity in largemouth bass (Micropterus salmoides) via the NFκB/survivin signaling pathway. FISH & SHELLFISH IMMUNOLOGY 2023; 136:108736. [PMID: 37054764 DOI: 10.1016/j.fsi.2023.108736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/20/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
This study aimed to elucidate the mechanisms of yellow mealworm (Tenebrio Molitor, YM) in intestinal immunity and health. Largemouth bass, as an enteritis modeling animal, were fed 3 diets containing YM at 0% (YM0), 24% (YM24) and 48% (YM48). The YM24 group had reduced levels of proinflammatory cytokines, while the YM48 group experienced a negative impact on intestinal health. Next, the Edwardsiella tarda (E. tarda) challenge test consisted of 4 YM diets, 0% (EYM0), 12% (EYM12), 24% (EYM24), and 36% (EYM36). The EYM0 and EYM12 groups exhibited intestinal damage and immunosuppression by the pathogenic bacteria. However, the above adverse phenotypes were attenuated in the EYM24 and EYM36 groups. Mechanistically, the EYM24 and EYM36 groups enhanced intestinal immunity in largemouth bass via activating NFκBp65 and further upregulating survivin expression to inhibit apoptosis. The results identify a protective mechanism of YM as a novel food or feed source by improving intestinal health.
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Affiliation(s)
- Chunyu Ge
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China; Institute of Animal Science, Chinese Academy of Agriculture Sciences, Beijing, China
| | - Xiaofang Liang
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoliang Wu
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jie Wang
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hao Wang
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuchang Qin
- Institute of Animal Science, Chinese Academy of Agriculture Sciences, Beijing, China
| | - Min Xue
- National Aquafeed Safety Assessment Center, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China.
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Michishita R, Shimoda M, Furukawa S, Uehara T. Inoculation with black soldier fly larvae alters the microbiome and volatile organic compound profile of decomposing food waste. Sci Rep 2023; 13:4297. [PMID: 36922572 PMCID: PMC10017687 DOI: 10.1038/s41598-023-31388-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
The black soldier fly (BSF; Hermetia illucens) is used in sustainable processing of many types of organic waste. However, organic waste being decomposed by BSF produces strong odors, hindering more widespread application. The odor components and how they are produced have yet to be characterized. We found that digestion of food waste by BSF significantly alters the microbial flora, based on metagenomic analyses, and the odor components generated, as shown by thermal desorption gas chromatography mass spectrometry analysis. Inoculation with BSF significantly decreased production of volatile organic sulfur compounds (dimethyl disulfide and dimethyl trisulfide), which are known to be released during methionine and cysteine metabolism by Lactobacillus and Enterococcus bacteria. BSF inoculation significantly changed the abundance of Lactobacillus and Enterococcus and decreased microbial diversity overall. These findings may help in optimizing use of BSF for deodorization of composting food waste.
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Affiliation(s)
- Rena Michishita
- Division of Insect Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8634, Japan.,Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Masami Shimoda
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Seiichi Furukawa
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Takuya Uehara
- Division of Insect Sciences, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8634, Japan.
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29
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Tao X, Xiang F, Ahmad Khan FZ, Yan Y, Ma J, Xu B, Zhang Z. Decomposition and humification process of domestic biodegradable waste by black soldier fly (Hermetia illucens L.) larvae from the perspective of dissolved organic matter. CHEMOSPHERE 2023; 317:137861. [PMID: 36642139 DOI: 10.1016/j.chemosphere.2023.137861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Black soldier fly larvae (Hermitia illucens L.) (BSFL) bioconversion is a promising technology for domestic biodegradable waste (DBW) management and resource recovery. However, little is known about the DBW biodegradation during the BSFL bioconversion from the perspective of dissolved organic matter (DOM). In the current study, field tests were conducted on a full-scale BSFL bioconversion facility with treatment capacity of 15 tons DBW/day. Composition of DOM in DBW were investigated by spectral analysis (UV-vis, fluorescence, and Fourier Transform Infrared spectroscopy (FT-IR)), coupled with enzyme activity analysis. After BSFL bioconversion, DOM concentrations, total carbon and total nitrogen in residues decreased by 51.5%, 18.3% and 19.9%, respectively. Meanwhile, enzymes like catalase, lipase, protease, sucrase, urease and cellulase significantly increased (9.28%-56.3%). The specific UV absorbance at 254 nm and 280 nm (SUVA254, SUVA280), the area at 226-400 nm (A226-400) and slope in the 280-400 nm region (S280-400) of DOM increased by 230%, 186%, 143% and 398%, respectively. Moreover, the characteristic peaks at 1636, 1077 and 1045 cm-1 in FT-IR increased continuously, with a significant decrease in peak at 1124 and 1572 cm-1. DOM spectral data show that BSFL decomposed the carboxylic, cellulose and aliphatic components, resulting in the increase of oxygen-containing functional groups (e.g., hydroxyl, carboxyl, carbonyl) and aromatic compounds. Furthermore, fluorescence profiles show that Region Ⅰ, Ⅱ (aromatic proteins) and Ⅳ (soluble microbial byproducts) decreased while Region Ⅴ (humic-like substances) increased significantly. Humification index increased by 122% while biological index decreased by 18.0%, indicating a significant increase in degree of humification and stabilization of the residues. The current evidence provides a theoretical basis for technical re-innovation and improving economic potential of BSFL technology.
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Affiliation(s)
- XingHua Tao
- College of Environment and Natural Resource Sciences, ZheJiang University, YuHangTang Ave 688, HangZhou, ZheJiang Province, 310058, PR China; HangZhou GuSheng Technology Company Limited, XiangWang Ave 48, HangZhou, 311121, PR China
| | - FangMing Xiang
- College of Environment and Natural Resource Sciences, ZheJiang University, YuHangTang Ave 688, HangZhou, ZheJiang Province, 310058, PR China; HangZhou GuSheng Technology Company Limited, XiangWang Ave 48, HangZhou, 311121, PR China
| | - Fawad Zafar Ahmad Khan
- Department of Outreach & Continuing Education, MNS University of Agriculture, Multan 66000, Pakistan
| | - YuLong Yan
- HangZhou GuSheng Technology Company Limited, XiangWang Ave 48, HangZhou, 311121, PR China; JiaXing FuKang Biotechnology Company Limited, Building 1-19#, Development Ave 133, TongXiang Economic HiTech Zone, TongXiang, 314515, PR China
| | - JingJin Ma
- College of Environment and Natural Resource Sciences, ZheJiang University, YuHangTang Ave 688, HangZhou, ZheJiang Province, 310058, PR China; HangZhou GuSheng Technology Company Limited, XiangWang Ave 48, HangZhou, 311121, PR China
| | - BingXiang Xu
- JiaXing FuKang Biotechnology Company Limited, Building 1-19#, Development Ave 133, TongXiang Economic HiTech Zone, TongXiang, 314515, PR China
| | - ZhiJian Zhang
- College of Environment and Natural Resource Sciences, ZheJiang University, YuHangTang Ave 688, HangZhou, ZheJiang Province, 310058, PR China; China Academy of West Region Development, ZheJiang University, YuHangTang Ave 866, HangZhou, 310058, PR China.
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30
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Zhou Y, Wang D, Zhou S, Duan H, Guo J, Yan W. Nutritional Composition, Health Benefits, and Application Value of Edible Insects: A Review. Foods 2022; 11:3961. [PMID: 36553703 PMCID: PMC9777846 DOI: 10.3390/foods11243961] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/17/2022] [Accepted: 12/03/2022] [Indexed: 12/13/2022] Open
Abstract
For thousands of years, edible insects have been used as food to alleviate hunger and improve malnutrition. Some insects have also been used as medicines because of their therapeutic properties. This is not only due to the high nutritional value of edible insects, but more importantly, the active substances from edible insects have a variety of biofunctional activities. In this paper, we described and summarized the nutritional composition of edible insects and discussed the biological functions of edible insects and their potential benefits for human health. A summary analysis of the findings for each active function confirms that edible insects have the potential to develop functional foods and medicines that are beneficial to humans. In addition, we analyzed the issues that need to be considered in the application of edible insects and the current status of edible insects in food and pharmaceutical applications. We concluded with a discussion of regulations related to edible insects and an outlook on future research and applications of edible insects. By analyzing the current state of research on edible insects, we aim to raise awareness of the use of edible insects to improve human health and thus promote their better use and development.
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Affiliation(s)
- Yaxi Zhou
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
- Beijing Key Laboratory of Bioactive Substances and Functional Food, College of Biochemical Engineering, Beijing Union University, 197 North Tucheng West Road, Beijing 100023, China
| | - Diandian Wang
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
| | - Shiqi Zhou
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
| | - Hao Duan
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
| | - Jinhong Guo
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
| | - Wenjie Yan
- College of Biochemical Engineering, Beijing Union University, No.18, Chaoyang District 3, Futou, Beijing 100023, China
- Beijing Key Laboratory of Bioactive Substances and Functional Food, College of Biochemical Engineering, Beijing Union University, 197 North Tucheng West Road, Beijing 100023, China
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Kierończyk B, Rawski M, Mikołajczak Z, Homska N, Jankowski J, Ognik K, Józefiak A, Mazurkiewicz J, Józefiak D. Available for millions of years but discovered through the last decade: Insects as a source of nutrients and energy in animal diets. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2022; 11:60-79. [PMID: 36101841 PMCID: PMC9442335 DOI: 10.1016/j.aninu.2022.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/25/2022] [Accepted: 06/10/2022] [Indexed: 10/29/2022]
Abstract
The aim of this review is to present and discuss the most recent literature about the processing of insect biomass and its impact on nutritive value, further implementation of meals and fats derived from invertebrates to livestock (poultry and swine), aquaculture (salmonids), and companion animal diets and their impact on growth performance, metabolic response, and gastrointestinal microbiota shifts. Additionally, the most important barriers to obtaining unified products in terms of their nutritive value are considered, i.e., to define insects' nutrient requirements, including various technological groups and further biomass processing (slaughtering, drying, and storage). Due to the current limitation in the insect production process consisting of the lack of infrastructure, there is stress on the relatively small amount of insect products added to the animal diets as a functional feed additive. Currently, only in the case of pet nutrition may insects be considered a full replacement for commonly used environmentally harmful and allergenic products. Simultaneously, the least information has been published on this topic. Thus, more scientific data are needed, particularly when the pet food branch and insect-based diets are rapidly growing.
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Affiliation(s)
- Bartosz Kierończyk
- Department of Animal Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Mateusz Rawski
- Laboratory of Inland Fisheries and Aquaculture, Department of Zoology, Poznań University of Life Sciences, Poznań, Poland
| | - Zuzanna Mikołajczak
- Department of Animal Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Natalia Homska
- Laboratory of Inland Fisheries and Aquaculture, Department of Zoology, Poznań University of Life Sciences, Poznań, Poland
| | - Jan Jankowski
- Department of Poultry Science, University of Warmia and Mazury, Olsztyn, Poland
| | - Katarzyna Ognik
- Department of Biochemistry and Toxicology, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Lublin, Poland
| | - Agata Józefiak
- Department of Preclinical Sciences and Infectious Diseases, Poznań University of Life Sciences, Poznań, Poland
| | - Jan Mazurkiewicz
- Laboratory of Inland Fisheries and Aquaculture, Department of Zoology, Poznań University of Life Sciences, Poznań, Poland
| | - Damian Józefiak
- Department of Animal Nutrition, Poznań University of Life Sciences, Poznań, Poland
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32
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Efficacy of natural antimicrobial peptides versus peptidomimetic analogues: a systematic review. Future Med Chem 2022; 14:1899-1921. [PMID: 36421051 DOI: 10.4155/fmc-2022-0160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aims: This systematic review was carried out to determine whether synthetic peptidomimetics exhibit significant advantages over antimicrobial peptides in terms of in vitro potency. Structural features - molecular weight, charge and length - were examined for correlations with activity. Methods: Original research articles reporting minimum inhibitory concentration values against Escherichia coli, indexed until 31 December 2020, were searched in PubMed/ScienceDirect/Google Scholar and evaluated using mixed-effects models. Results: In vitro antimicrobial activity of peptidomimetics resembled that of antimicrobial peptides. Net charge significantly affected minimum inhibitory concentration values (p < 0.001) with a trend of 4.6% decrease for increments in charge by +1. Conclusion: AMPs and antibacterial peptidomimetics exhibit similar potencies, providing an opportunity to exploit the advantageous stability and bioavailability typically associated with peptidomimetics.
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33
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Deo S, Turton KL, Kainth T, Kumar A, Wieden HJ. Strategies for improving antimicrobial peptide production. Biotechnol Adv 2022; 59:107968. [PMID: 35489657 DOI: 10.1016/j.biotechadv.2022.107968] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/18/2022] [Accepted: 04/25/2022] [Indexed: 01/10/2023]
Abstract
Antimicrobial peptides (AMPs) found in a wide range of animal, insect, and plant species are host defense peptides forming an integral part of their innate immunity. Although the exact mode of action of some AMPs is yet to be deciphered, many exhibit membrane lytic activity or interact with intracellular targets. The ever-growing threat of antibiotic resistance has brought attention to research on AMPs to enhance their clinical use as a therapeutic alternative. AMPs have several advantages over antibiotics such as broad range of antimicrobial activities including anti-fungal, anti-viral and anti-bacterial, and have not reported to contribute to resistance development. Despite the numerous studies to develop efficient production methods for AMPs, limitations including low yield, degradation, and loss of activity persists in many recombinant approaches. In this review, we outline available approaches for AMP production and various expression systems used to achieve higher yield and quality. In addition, recent advances in recombinant strategies, suitable fusion protein partners, and other molecular engineering strategies for improved AMP production are surveyed.
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Affiliation(s)
- Soumya Deo
- Department of Microbiology, Buller building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Kristi L Turton
- Alberta RNA Research and Training Institute, Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Dr. W., Lethbridge, AB T1K 3M4, Canada
| | - Tajinder Kainth
- Department of Microbiology, Buller building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ayush Kumar
- Department of Microbiology, Buller building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Hans-Joachim Wieden
- Department of Microbiology, Buller building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
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34
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Li Z, Jia L, Yi H, Guo G, Huang L, Zhang Y, Jiao Z, Wu J. Pre-exposure to Candida albicans induce trans-generational immune priming and gene expression of Musca domestica. Front Microbiol 2022; 13:902496. [PMID: 36238590 PMCID: PMC9551092 DOI: 10.3389/fmicb.2022.902496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Insects have the phenomenon of immune priming by which they can have enhanced protection against reinfection with the same pathogen, and this immune protection can be passed on to their offspring, which is defined as “trans-generational immune priming (TGIP).” But whether housefly possesses TGIP is still unclear. Therefore, we used the housefly as the insect model and Candida albicans as the pathogen to explore whether the housefly is capable of eliciting TGIP, and RNA sequencing (RNA-seq) was performed to explore the molecular mechanism of TGIP of the housefly. We found that the housefly possesses TGIP, and adults pre-exposed to heat-killed C. albicans could confer protection to itself and its offspring upon reinfection with a lethal dose of C. albicans. RNA-seq results showed that 30 and 154 genes were differentially expressed after adults were primed with heat-killed C. albicans (CA-A) and after offspring larvae were challenged with a lethal dose of C. albicans (CA-CA-G), respectively. Among the differentially expressed genes (DEGs), there were 23 immune genes, including 6 pattern recognition receptors (PRRs), 7 immune effectors, and 10 immunoregulatory molecules. More importantly, multiple DEGs were involved in the Toll signaling pathway and phagosome signaling pathway, suggesting that the Toll signaling pathway and phagocytosis might play important roles in the process of TGIP of housefly to C. albicans. Our results expanded on previous studies and provided parameters for exploring the mechanism of TGIP.
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Affiliation(s)
- Zhongxun Li
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
- Department of Clinical Laboratory, The Second People’s Hospital of Yibin, West China Yibin Hospital, Yibin, China
| | - Lina Jia
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
| | - Hong Yi
- Department of Pathology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Guo Guo
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
| | - Li Huang
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
| | - Yingchun Zhang
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
| | - Zhenlong Jiao
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
- *Correspondence: Zhenlong Jiao,
| | - Jianwei Wu
- School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
- Jianwei Wu,
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35
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Fuhrmann A, Wilde B, Conz RF, Kantengwa S, Konlambigue M, Masengesho B, Kintche K, Kassa K, Musazura W, Späth L, Gold M, Mathys A, Six J, Hartmann M. Residues from black soldier fly ( Hermetia illucens) larvae rearing influence the plant-associated soil microbiome in the short term. Front Microbiol 2022; 13:994091. [PMID: 36225364 PMCID: PMC9550165 DOI: 10.3389/fmicb.2022.994091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
The larvae of the black soldier fly (BSFL, Hermetia illucens) efficiently close resource cycles. Next to the nutrient-rich insect biomass used as animal feed, the residues from the process are promising plant fertilizers. Besides a high nutrient content, the residues contain a diverse microbial community and application to soil can potentially promote soil fertility and agricultural production through the introduction of beneficial microbes. This research assessed the application of the residues on plant-associated bacterial and fungal communities in the rhizosphere of a grass-clover mix in a 42-day greenhouse pot study. Potted soil was amended with BSFL residues (BR+) or conventional compost (CC+) produced by Rwandan waste management companies in parallel to residues and compost sterilized (BR-, CC-) by high-energy electron beam (HEEB) as abiotic controls. The fertilizers were applied at a rate of 150 kg N ha-1. Soil bacterial and fungal communities in both fertilizer and soil were assessed by high-throughput sequencing of ribosomal markers at different times after fertilizer application. Additionally, indicators for soil fertility such as basal respiration, plant yield and soil physicochemical properties were analyzed. Results showed that the application of BSFL residues influenced the soil microbial communities, and especially fungi, stronger than CC fertilizers. These effects on the microbial community structure could partly be attributed to a potential introduction of microbes to the soil by BSFL residues (e.g., members of genus Bacillus) since untreated and sterilized BSFL residues promoted different microbial communities. With respect to the abiotic effects, we emphasize a potential driving role of particular classes of organic matter like fiber and chitin. Indeed, especially taxa associated with decomposition of organic matter (e.g., members of the fungal genus Mortierella) were promoted by the application of BSFL residues. Soil fertility with respect to plant yield (+17% increase compared to unamended control) and basal respiration (+16% increase compared to unamended control) tended to be improved with the addition of BSFL residues. Findings underline the versatile opportunities for soil fertility arising from the application of BSFL residues in plant production and point to further research on quantification of the described effects.
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Affiliation(s)
- Adrian Fuhrmann
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
- Singapore-ETH Centre, Singapore, Singapore
| | - Benjamin Wilde
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Rafaela Feola Conz
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | | | | | | | - Kokou Kintche
- International Institute of Tropical Agriculture, Kigali, Rwanda
| | - Kinfe Kassa
- Faculty of Water Supply and Environmental Engineering, Arba Minch University, Arba Minch, Ethiopia
| | - William Musazura
- School of Agricultural, Earth and Environmental Sciences, University of Kwazulu-Natal, Pietermaritzburg, South Africa
| | - Leonhard Späth
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
- Transdisciplinary Lab, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Moritz Gold
- Sustainable Food Processing Laboratory, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
- Department of Sanitation, Water and Solid Waste for Development (Sandec), Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Alexander Mathys
- Sustainable Food Processing Laboratory, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
| | - Johan Six
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
| | - Martin Hartmann
- Sustainable Agroecosystems Group, Institute of Agricultural Sciences, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
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von Bredow YM, Müller A, Popp PF, Iliasov D, von Bredow CR. Characterization and mode of action analysis of black soldier fly (Hermetia illucens) larva-derived hemocytes. INSECT SCIENCE 2022; 29:1071-1095. [PMID: 34687131 DOI: 10.1111/1744-7917.12977] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 10/01/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
With the growing importance of the black soldier fly (Hermetia illucens) for both sustainable food production and waste management as well as for science, a great demand of understanding its immune system arises. Here, we present the first description of the circulating larval hemocytes with special emphasis on uptake of microorganisms and distinguishing hemocyte types. With histological, zymographic, and cytometric methods and with a set of hemocyte binding lectins and antibodies, the hemocytes of H. illucens are identified as plasmatocytes, crystal cells, and putative prohemocytes. Total hemocyte counts (THC) are determined, and methods for THC determination are compared. Approximately 1100 hemocytes per microliter hemolymph are present in naive animals, while hemocyte density decreases dramatically shortly after wounding, indicating a role of hemocytes in response to wounding (and immune response in general). The determination of the relative abundance of each hemocyte type (differential hemocyte count, DHC) revealed that plasmatocytes are highly abundant, whereas prohemocytes and crystal cells make up only a small percentage of the circulating cells. Plasmatocytes are not only the most abundant but also the professional phagocytes in H. illucens. They rapidly engulf and take up bacteria both in vivo and in vitro, indicating a very potent cellular defense against invading pathogens. Larger bioparticles such as yeasts are also removed from circulation by phagocytosis, but slower than bacteria. This is the first analysis of the potent cellular immune response in the black soldier fly, and a first toolbox that helps to identify hemocyte (types) is presented.
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Affiliation(s)
- Yvette M von Bredow
- Justus-Liebig-Universität Gießen, Institut für Allgemeine Zoologie und Entwicklungsbiologie, Zelluläre Erkennungs- und Abwehrprozesse, Gießen, Germany
| | - Ariane Müller
- Technische Universität Dresden, Fakultät Biologie, Institut für Zoologie, Dresden, Germany
| | - Philipp F Popp
- Technische Universität Dresden, Fakultät Biologie, Institut für Mikrobiologie, Dresden, Germany
- Present address: Philipp F. Popp, Institute for Biology-Bacterial Physiology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Denis Iliasov
- Technische Universität Dresden, Fakultät Biologie, Institut für Mikrobiologie, Dresden, Germany
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Zhang Y, Xiao X, Elhag O, Cai M, Zheng L, Huang F, Jordan HR, Tomberlin JK, Sze SH, Yu Z, Zhang J. Hermetia illucens L. larvae-associated intestinal microbes reduce the transmission risk of zoonotic pathogens in pig manure. Microb Biotechnol 2022; 15:2631-2644. [PMID: 35881487 PMCID: PMC9518977 DOI: 10.1111/1751-7915.14113] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 12/03/2022] Open
Abstract
Black soldier fly (BSF) larvae are considered a promising biological reactor to convert organic waste and reduce the impact of zoonotic pathogens on the environment. We analysed the effects of BSF larvae on Staphylococcus aureus and Salmonella spp. populations in pig manure (PM), which showed that BSF larvae can significantly reduce the counts of the associated S. aureus and Salmonella spp. Then, using a sterile BSF larval system, we validated the function of BSF larval intestinal microbiota in vivo to suppress pathogens, and lastly, we isolated eight bacterial strains from the BSF larval gut that inhibit S. aureus. Results indicated that functional microbes are essential for BSF larvae to antagonise S. aureus. Moreover, the analysis results of the relationship between the intestinal microbiota and S. aureus and Salmonella spp. showed that Myroides, Tissierella, Oblitimonas, Paenalcalignes, Terrisporobacter, Clostridium, Fastidiosipila, Pseudomonas, Ignatzschineria, Savagea, Moheibacter and Sphingobacterium were negatively correlated with S. aureus and Salmonella. Overall, these results suggested that the potential ability of BSF larvae to inhibit S. aureus and Salmonella spp. present in PM is accomplished primarily by gut‐associated microorganisms.
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Affiliation(s)
- Yuanpu 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
| | - Xiaopeng Xiao
- 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
| | - Osama Elhag
- 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.,Faculty of Science and Technology, Omdurman Islamic University, Khartoum, Sudan
| | - 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
| | - Heather R Jordan
- Department of Biology, Mississippi State University, Mississippi State, Mississippi, USA
| | | | - Sing-Hoi Sze
- Department of Computer Science and Engineering, Texas A&M University, College Station, Texas, USA
| | - 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
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Cai M, Li L, Zhao Z, Zhang K, Li F, Yu C, Yuan R, Zhou B, Ren Z, Yu Z, Zhang J. Morphometric Characteristic of Black Soldier Fly ( Hermetia illucens) · Wuhan Strain and Its Egg Production Improved by Selectively Inbreeding. LIFE (BASEL, SWITZERLAND) 2022; 12:life12060873. [PMID: 35743903 PMCID: PMC9227254 DOI: 10.3390/life12060873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/26/2022] [Accepted: 06/02/2022] [Indexed: 11/16/2022]
Abstract
The use of black soldier fly (BSF) larvae to recycle various organic materials while producing biomass for use as feed is well established. Variety selection is important from the perspective of application. In the current study, morphometric and life-history traits of a Wuhan-domesticated BSF colony (Wuhan strain) were compared to those of a 'selectively inbred' population (inbred strain, inbred for 10 generations). In terms of morphological characteristics, the results showed that both strains had dichoptic compound eyes, club-shaped antennae, blue halters, and blue-green metallic luster wings with a hexagon discal cell. In both strains, the body and wing length of female adults were slightly larger than those of male adults. The first four larval stages of the BSF occurred rapidly (1-12 days) with transitions across stages resulting in doubling of size for both populations. Selective inbreeding did not alter the life-history traits of the larval exuviate stage in terms of age, size, weight, and feed reduction rate. Overall egg production for the inbred strain was significantly higher (1.5 times greater) than the Wuhan strain. This is explained by increased adult emergence and individual oviposition performance. It was speculated that inbreeding improved the reproductive success of inbred adult female offspring and selection process steadied it. The findings indicate that selective inbreeding could enhance overall oviposition performance and provide a strategy to selectively breed BSF with high egg production for future applications.
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Affiliation(s)
- Minmin Cai
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Li Li
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Zhengzheng Zhao
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Ke Zhang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Fang Li
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Chan Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China;
| | - Rongfang Yuan
- Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; (R.Y.); (B.Z.)
| | - Beihai Zhou
- Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, Department of Environmental Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; (R.Y.); (B.Z.)
| | - Zhuqing Ren
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Ziniu Yu
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
| | - Jibin Zhang
- State Key Laboratory of Agricultural Microbiology, National Engineering Research Centre of Microbial Pesticides, College of Life Science and Technology, College of Animal Science & Technology, Huazhong Agricultural University, Wuhan 430070, China; (M.C.); (L.L.); (Z.Z.); (K.Z.); (F.L.); (Z.R.); (Z.Y.)
- Correspondence: ; Tel.: +86-27-87287701-8206; Fax: +86-27-87287254
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Park SJ, Kim KY, Baik MY, Koh YH. Sericulture and the edible-insect industry can help humanity survive: insects are more than just bugs, food, or feed. Food Sci Biotechnol 2022; 31:657-668. [PMID: 35646418 PMCID: PMC9133288 DOI: 10.1007/s10068-022-01090-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/17/2022] [Accepted: 04/18/2022] [Indexed: 11/26/2022] Open
Abstract
The most serious threat which humans face is rapid global climate change, as the Earth shifts rapidly into a regime less hospitable to humans. To address the crisis caused by severe global climate change, it will be necessary to modify humankind's way of life. Because livestock production accounts for more than 14.5% of all greenhouse gas (GHG) emissions, it is critical to reduce the dependence of humans on protein nutrients and calories obtained from livestock. One way to do so is to use insects as food. Compared with typical livestock, farming edible insects (or "mini-livestock") produce fewer GHG emissions, require less space and water, involve shorter life cycles, and have higher feed conversion rates. It has been recently reported that consumption of certain insects can prevent or treat human diseases. This review goes beyond entomophagy to entomotherapy and their application to the food industry.
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Affiliation(s)
| | - Kee-Young Kim
- National Institute of Agricultural Science, Wanju-Gun, Jeollabuk-do Republic of Korea
| | - Moo-Yeol Baik
- Department of Food Science and Biotechnology, Institute of Life Science and Resources, Kyung Hee University, Yongin, Gyeonggi-do Republic of Korea
- Department of Food Innovation and Health, Kyung Hee University, Yongin, Gyeonggi-do Republic of Korea
| | - Young Ho Koh
- Ilsong Institute of Life Science, Hallym University, Seoul, Republic of Korea
- Department of Biomedical Gerontology, Hallym University Graduate School, Chuncheon, Gangwon-do Republic of Korea
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In Vitro Evaluation of Antimicrobial Peptides from the Black Soldier Fly ( Hermetia Illucens) against a Selection of Human Pathogens. Microbiol Spectr 2022; 10:e0166421. [PMID: 34985302 PMCID: PMC8729770 DOI: 10.1128/spectrum.01664-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Antimicrobial peptides (AMPs) are being explored as alternatives to traditional antibiotics to combat the rising antimicrobial resistance. Insects have proven to be a valuable source of new, potent AMPs with large structural diversity. For example, the black soldier fly has one of the largest AMP repertoires ever recorded in insects. Currently, however, this AMP collection has not yet undergone antimicrobial evaluation or in-depth in vitro characterization. This study evaluated the activity of a library of 36 black soldier fly AMPs against a panel of human pathogens (Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, and Aspergillus fumigatus) and a human cell line (MRC5-SV2). The activity profile of two cecropins (Hill-Cec1 and Hill-Cec10) with potent Gram-negative activity, was further explored by characterizing their hemolysis, time-to-kill kinetics, membrane-permeabilization properties, and anti-biofilm activity. Hill-Cec1 and Hill-Cec10 also showed high activity against other bacterial species, including Klebsiella pneumoniae and multi-drug resistant P. aeruginosa. Both AMPs are bactericidal and have a rapid onset of action with membrane-permeabilizing effects. Hill-Cec1 and Hill-Cec10 were also able to prevent P. aeruginosa biofilm formation, but no relevant effect was seen on biofilm eradication. Overall, Hill-Cec1 and Hill-Cec10 are promising leads for new antimicrobial development to treat critical infections caused by Gram-negative pathogens such as P. aeruginosa. IMPORTANCE With the ever growing antimicrobial resistance, finding new candidates for antimicrobial drug development is indispensable. Antimicrobial peptides have steadily gained attention as alternatives for conventional antibiotics, due to some highly desirable characteristics, such as their low propensity for resistance development. With this article, we aim to upgrade the knowledge on the activity of black soldier fly antimicrobial peptides and their potential as future therapeutics. To achieve this, we have evaluated for the first time a library of 36 synthetically produced peptides from the black soldier fly against a range of human pathogens and a human cell line. Two selected peptides have undergone additional testing to characterize their antimicrobial profile against P. aeruginosa, a clinically important Gram-negative pathogen with a high established resistance. Overall, this research has contributed to the search for new peptide drug leads to combat the rising antimicrobial resistance.
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Meat Quality of Guinea Pig (Cavia porcellus) Fed with Black Soldier Fly Larvae Meal (Hermetia illucens) as a Protein Source. SUSTAINABILITY 2022. [DOI: 10.3390/su14031292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The most widely used feed ingredients in the world are fishmeal and soybean, which, despite having high-quality digestible protein and good fat content, are considered environmentally unsustainable and increasingly expensive. This issue also involves the guinea pig, a very important animal protein source for people in Andean regions in South America. Here we investigate the substitution of soybean meal with 50% and 100% black soldier fly larvae meal in the guinea pig diet and its effects on meat quality (fatty acid profile, amino acid profile, water-holding capacity, pH, proximal composition, and color). The results showed no differences in the protein content and amino acid profile of meat nor in the n-6:n-3 and P/S ratios, but did show an increment in the desirable fats (mono- and polyunsaturated fatty acids) in the guinea pigs fed with black soldier fly larvae meal. All the other analyzed parameters showed no differences among the diets tested. These results suggest that total replacement of soybean meal with black soldier fly larvae meal in guinea pig nutrition is feasible since meat quality was maintained or improved.
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Tang Q, Xu E, Wang Z, Xiao M, Cao S, Hu S, Wu Q, Xiong Y, Jiang Z, Wang F, Yang G, Wang L, Yi H. Dietary Hermetia illucens Larvae Meal Improves Growth Performance and Intestinal Barrier Function of Weaned Pigs Under the Environment of Enterotoxigenic Escherichia coli K88. Front Nutr 2022; 8:812011. [PMID: 35118109 PMCID: PMC8805673 DOI: 10.3389/fnut.2021.812011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/22/2021] [Indexed: 12/12/2022] Open
Abstract
The aim of this study was to evaluate the effect of Hermetia illucens larvae meal (HI) on the growth performance and intestinal barrier function of weaned pigs. To achieve this, 72 weaned pigs [28-day-old, 8.44 ± 0.04 kg body weight (BW)] were randomly assigned to three dietary treatments: basal diet (negative control, NC), zinc oxide-supplemented diet (positive control, PC), and HI-supplemented diet [100% replacement of fishmeal (FM), HI], for 28 days in the presence of enterotoxigenic Escherichia coli (ETEC). The results showed that HI and PC increased (p < 0.05) the average daily gain (ADG) and average daily feed intake (ADFI) of weaned pigs from day 1 to 14, and decreased diarrhea incidence from day 1 to 28. Additionally, HI increased (p < 0.05) claudin-1, occludin, mucin-1 (MUC-1), and MUC-2 expression, goblet cell number, and secretory immunoglobulin A (sIgA) concentration in the intestine of weaned pigs. Compared with NC, HI downregulated (p < 0.05) interleukin-1β (IL-1β) and IL-8 expression, and upregulated IL-10, transforming growth factor-β (TGF-β), antimicrobial peptide [porcine β defensin 1 (pBD1), pBD2, protegrin 1-5 (PG1-5)] expression in the jejunum or ileum. Moreover, HI decreased (p < 0.05) toll-like receptor 2 (TLR2), phosphorylated nuclear factor-κB (p-NF-κB), and phosphorylated mitogen-activated protein kinase (p-MAPK) expression, and increased sirtuin 1 (SIRT1) expression in the ileum. Additionally, HI increased histone deacetylase 3 (HDAC3) expression and acetylation of histone 3 lysine 27 (acH3k27) in the ileum. Furthermore, HI positively influenced the intestinal microbiota composition and diversity of weaned pigs and increased (p < 0.05) butyrate and valerate concentrations. Overall, dietary HI improved growth performance and intestinal barrier function, as well as regulated histone acetylation and TLR2-NF-κB/MAPK signaling pathways in weaned pigs.
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Affiliation(s)
- Qingsong Tang
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Institute of Animal Nutrition and Feed Science, College of Animal Science, Ministry of Education, Guizhou University, Guiyang, China
| | - E. Xu
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Institute of Animal Nutrition and Feed Science, College of Animal Science, Ministry of Education, Guizhou University, Guiyang, China
| | - Zhikang Wang
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Mingfei Xiao
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Key Laboratory of Animal Genetics, Breeding and Reproduction in the Plateau Mountainous Region, Institute of Animal Nutrition and Feed Science, College of Animal Science, Ministry of Education, Guizhou University, Guiyang, China
| | - Shuting Cao
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Shenglan Hu
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Qiwen Wu
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Yunxia Xiong
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Zongyong Jiang
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Fengying Wang
- Guangzhou AnRuiJie Environmental Protection Technology Co., Ltd., Guangzhou, China
| | - Geling Yang
- Guangzhou AnRuiJie Environmental Protection Technology Co., Ltd., Guangzhou, China
| | - Li Wang
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Li Wang
| | - Hongbo Yi
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Key Laboratory of Animal Breeding and Nutrition, Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- *Correspondence: Hongbo Yi
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Gorrens E, Van Looveren N, Van Moll L, Vandeweyer D, Lachi D, De Smet J, Van Campenhout L. Staphylococcus aureus in Substrates for Black Soldier Fly Larvae (Hermetia illucens) and Its Dynamics during Rearing. Microbiol Spectr 2021; 9:e0218321. [PMID: 34937197 PMCID: PMC8694120 DOI: 10.1128/spectrum.02183-21] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 11/22/2021] [Indexed: 11/29/2022] Open
Abstract
Black soldier fly larvae (BSFL; Hermetia illucens) are promising insects for the conversion of organic waste streams into valuable biomolecules. Such waste streams can contain foodborne pathogens. To assess this risk factor, this study evaluated the presence of Staphylococcus aureus in waste streams as a substrate ingredient for BSFL production as well as in the rearing process. First, the general microbiological quality and the occurrence of S. aureus were investigated for different waste streams. Staphylococcus aureus was abundantly present. Control of pH and water activity should avoid pathogens, which cannot grow in single-substrate ingredients, redeveloping when mixing streams for optimal substrate conditions for BSFL production. Next, it was investigated whether S. aureus present in the substrate was ingested and/or eradicated by BSFL. In inoculation trials, with S. aureus added to chicken feed as the substrate at 3 or 7 log CFU/g, the larvae showed a reducing effect on S. aureus. After 6 days, S. aureus counts were below the detection limit (2.0 log CFU/g) in all larvae samples and decreased in the substrate to <2.0 and <3.1 log CFU/g for inoculation levels of 3 and 7 log CFU/g, respectively. While this is promising, it is still recommended to monitor and control this pathogen in BSFL rearing. Intriguingly, screening of antimicrobial activity of dominant microorganisms associated with BSFL showed a clear activity of Trichosporon isolates against S. aureus. Future research should explore whether Trichosporon, which is frequently observed in BSFL, plays a role in controlling specific microorganisms, such as S. aureus. IMPORTANCE Given the increasing need for (more sustainable) methods to upcycle organic waste streams, the interest to rear insects, like black soldier fly larvae (BSFL), on such streams is increasing. This study reveals that S. aureus is abundantly present in such waste streams, which might be a point of attention for insect producers. At the same time, it reveals that when S. aureus was inoculated in chicken feed as the substrate, it was not detected in the larvae and was reduced in the substrate after 6 days. Future inoculation trials should investigate whether this reduction is substrate dependent or not. Toward the future, the role of the BSFL microbiota in controlling intestinal bacterial community homeostasis should be explored, because one of the dominant microorganisms associated with BSFL, Trichosporon spp., showed clear activity against S. aureus.
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Affiliation(s)
- E. Gorrens
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - N. Van Looveren
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - L. Van Moll
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory for Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Wilrijk, Belgium
| | - D. Vandeweyer
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - D. Lachi
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - J. De Smet
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - L. Van Campenhout
- Department of Microbial and Molecular Systems (M2S), Research Group for Insect Production and Processing, KU Leuven, Geel Campus, Geel, Belgium
- Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
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44
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Structural and functional characterizations and heterogenous expression of the antimicrobial peptides, Hidefensins, from black soldier fly, Hermetia illucens (L.). Protein Expr Purif 2021; 192:106032. [PMID: 34922007 DOI: 10.1016/j.pep.2021.106032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 12/11/2021] [Accepted: 12/13/2021] [Indexed: 12/30/2022]
Abstract
Insect defensins are effector components of the innate defense system. Defensins, which are widely distributed among insects, are a type of small cysteine-rich plant antimicrobial peptides with broad-spectrum antimicrobial activity. Here, the cDNAs of the black soldier fly, Hermetia illucens (L.), encoding six defensins, designated herein as Hidefensin1-1, 2, 3, 4, 5, 6. Moreover, Hidefensin1-1, 2, and 5 were identified for the first time by genome-targeted analysis. These Hidefensins were found to mainly adopt α-helix and β-sheet conformation homology as modeled by PRABI, Swiss-Model and ProFunc server. Six conserved cysteine residues that contribute to three disulfide bonds formed the spacing pattern "C-X12-C-X3-C-X9-C-X5-C-X-C", which play a vital role in the molecular stability of Hidefensins. Phylogenetic analysis revealed that the homology of five Hidefensins (except Hidefensin4) was about 59%-92% compared with other insect defensins, indicating that they are novel antimicrobial peptides genes in black soldier fly. Furthermore, the Hidefensin1-1 was expressed in the Escherichia coli strain BL21(DE3) as a fusion protein with thioredoxin. Results showed that the purified TRX-Hidefensin1-1 exerted strong inhibitory effects against the Gram-positive bacteria Staphylococcus aureus and the Gram-negative bacteria Escherichia coli. The inhibitory efficacy of TRX-Hidefensin1-1 against Gram-positive bacteria was better than that against Gram-negative bacteria. These results indicated that Hidefensin1-1 has potent antimicrobial activities against test pathogens.
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45
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Ho PN, Klanrit P, Hanboonsong Y, Yordpratum U, Suksawat M, Kulthawatsiri T, Jirahiranpat A, Deewai S, Mackawan P, Sermswan RW, Namwat N, Loilome W, Khampitak T, Wangwiwatsin A, Phetcharaburanin J. Bacterial challenge-associated metabolic phenotypes in Hermetia illucens defining nutritional and functional benefits. Sci Rep 2021; 11:23316. [PMID: 34857836 PMCID: PMC8639782 DOI: 10.1038/s41598-021-02752-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 11/18/2021] [Indexed: 01/18/2023] Open
Abstract
Black soldier fly (BSF, Hermetia illucens) is popular for its applications in animal feed, waste management and antimicrobial peptide source. The major advantages of BSF larva include their robust immune system and high nutritional content that can be further developed into more potential agricultural and medical applications. Several strategies are now being developed to exploit their fullest capabilities and one of these is the immunity modulation using bacterial challenges. The mechanism underlying metabolic responses of BSF to different bacteria has, however, remained unclear. In the current study, entometabolomics was employed to investigate the metabolic phenoconversion in response to either Escherichia coli, Staphylococcus aureus, or combined challenges in BSF larva. We have, thus far, characterised 37 metabolites in BSF larva challenged with different bacteria with the major biochemical groups consisting of amino acids, organic acids, and sugars. The distinct defense mechanism-specific metabolic phenotypes were clearly observed. The combined challenge contributed to the most significant metabolic phenoconversion in BSF larva with the dominant metabolic phenotypes induced by S. aureus. Our study suggested that the accumulation of energy-related metabolites provided by amino acid catabolism is the principal metabolic pathway regulating the defense mechanism. Therefore, combined challenge is strongly recommended for raising BSF immunity as it remarkably triggered amino acid metabolisms including arginine and proline metabolism and alanine, aspartate and glutamate metabolism along with purine metabolism and pyruvate metabolism that potentially result in the production of various nutritional and functional metabolites.
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Affiliation(s)
- Phuc N Ho
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Poramate Klanrit
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Yupa Hanboonsong
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Umaporn Yordpratum
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Manida Suksawat
- Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Thanaporn Kulthawatsiri
- Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Anyarin Jirahiranpat
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Suthicha Deewai
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Panya Mackawan
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand.,Research and Development Center, Betagro Group, Klong Luang, Pathum Thani, 12120, Thailand
| | - Rasana W Sermswan
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Nisana Namwat
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Watcharin Loilome
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Tueanjit Khampitak
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Arporn Wangwiwatsin
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand.,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Jutarop Phetcharaburanin
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Khon Kaen University International Phenome Laboratory, Khon Kaen, 40002, Thailand. .,Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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46
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Greenwood MP, Hull KL, Brink-Hull M, Lloyd M, Rhode C. Feed and Host Genetics Drive Microbiome Diversity with Resultant Consequences for Production Traits in Mass-Reared Black Soldier Fly ( Hermetia illucens) Larvae. INSECTS 2021; 12:1082. [PMID: 34940170 PMCID: PMC8706267 DOI: 10.3390/insects12121082] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 01/25/2023]
Abstract
Mass rearing the black soldier fly, Hermetia illucens, for waste bioremediation and valorisation is gaining traction on a global scale. While the health and productivity of this species are underpinned by associations with microbial taxa, little is known about the factors that govern gut microbiome assembly, function, and contributions towards host phenotypic development in actively feeding larvae. In the present study, a 16S rDNA gene sequencing approach applied to a study system incorporating both feed substrate and genetic variation is used to address this knowledge gap. It is determined that the alpha diversity of larval gut bacterial communities is driven primarily by features of the larval feed substrate, including the diversity of exogenous bacterial populations. Microbiome beta diversity, however, demonstrated patterns of differentiation consistent with an influence of diet, larval genetic background, and a potential interaction between these factors. Moreover, evidence for an association between microbiome structure and the rate of larval fat accumulation was uncovered. Taxonomic enrichment analysis and clustering of putative functional gut profiles further suggested that feed-dependent turnover in microbiome communities is most likely to impact larval characteristics. Taken together, these findings indicate that host-microbiome interactions in this species are complex yet relevant to larval trait emergence.
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Affiliation(s)
- Matthew P. Greenwood
- Department of Genetics, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; (M.P.G.); (K.L.H.); (M.B.-H.)
| | - Kelvin L. Hull
- Department of Genetics, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; (M.P.G.); (K.L.H.); (M.B.-H.)
| | - Marissa Brink-Hull
- Department of Genetics, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; (M.P.G.); (K.L.H.); (M.B.-H.)
| | - Melissa Lloyd
- Insect Technology Group Holdings UK Ltd., 1 Farnham Road, Guildford, Surrey GU2 4RG, UK;
| | - Clint Rhode
- Department of Genetics, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; (M.P.G.); (K.L.H.); (M.B.-H.)
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47
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Cheng J, Ahmat M, Guo H, Wei X, Zhang L, Cheng Q, Zhang J, Wang J, Si D, Zhang Y, Zhang R. Expression, Purification and Characterization of a Novel Hybrid Peptide CLP with Excellent Antibacterial Activity. Molecules 2021; 26:7142. [PMID: 34885732 PMCID: PMC8659006 DOI: 10.3390/molecules26237142] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 01/10/2023] Open
Abstract
CLP is a novel hybrid peptide derived from CM4, LL37 and TP5, with significantly reduced hemolytic activity and increased antibacterial activity than parental antimicrobial peptides. To avoid host toxicity and obtain high-level bio-production of CLP, we established a His-tagged SUMO fusion expression system in Escherichia coli. The fusion protein can be purified using a Nickel column, cleaved by TEV protease, and further purified in flow-through of the Nickel column. As a result, the recombinant CLP with a yield of 27.56 mg/L and a purity of 93.6% was obtained. The purified CLP exhibits potent antimicrobial activity against gram+ and gram- bacteria. Furthermore, the result of propidium iodide staining and scanning electron microscopy (SEM) showed that CLP can induce the membrane permeabilization and cell death of Enterotoxigenic Escherichia coli (ETEC) K88. The analysis of thermal stability results showed that the antibacterial activity of CLP decreases slightly below 70 °C for 30 min. However, when the temperature was above 70 °C, the antibacterial activity was significantly decreased. In addition, the antibacterial activity of CLP was stable in the pH range from 4.0 to 9.0; however, when pH was below 4.0 and over 9.0, the activity of CLP decreased significantly. In the presence of various proteases, such as pepsin, papain, trypsin and proteinase K, the antibacterial activity of CLP remained above 46.2%. In summary, this study not only provides an effective strategy for high-level production of antimicrobial peptides and evaluates the interference factors that affect the biological activity of hybrid peptide CLP, but also paves the way for further exploration of the treatment of multidrug-resistant bacterial infections.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yueping Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (J.C.); (M.A.); (H.G.); (X.W.); (L.Z.); (Q.C.); (J.Z.); (J.W.); (D.S.)
| | - Rijun Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (J.C.); (M.A.); (H.G.); (X.W.); (L.Z.); (Q.C.); (J.Z.); (J.W.); (D.S.)
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48
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Chaklader MR, Howieson J, Foysal MJ, Fotedar R. Transformation of fish waste protein to Hermetia illucens protein improves the efficacy of poultry by-products in the culture of juvenile barramundi, Lates calcarifer. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:149045. [PMID: 34328887 DOI: 10.1016/j.scitotenv.2021.149045] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/07/2021] [Accepted: 07/10/2021] [Indexed: 06/13/2023]
Abstract
Promoting a circular economy via the transformation of food waste into alternative and high-value protein sources for aquaculture diets is a novel approach to developing alternative raw materials to fishmeal (FM). This approach can reduce the ecological impact on the aquatic environment and simultaneously can provide an option for sustainable food waste management. In this context, we report a 56-day trial of feeding barramundi, Lates calcarifer on four iso‑nitrogenous and iso-lipidic diets where the control (0PBM-0HI) was a FM-based diet and the other test diets replaced FM protein with mixtures of a poultry by-product meal (PBM) and a full-fat Hermetia illucens (HI) larvae meal reared on fish waste: the test diets were 85% PBM + 15% HI (85PBM-15HI), 80% PBM + 20% HI (80PBM-20HI) and 75% PBM + 25% HI (75PBM-25HI). Fish fed PBM-HI-based diets showed an equal growth rate and amino acid profile when compared to the control group. Among all serum metabolites, alanine aminotransferase and glutamate dehydrogenase decreased in fish fed PBM-HI-based diets, whilst total protein levels improved in the same diets. Serum lysozyme and bactericidal activity were unchanged which supported the observation of similar infection rates against V. harveyi. Except for the kidney and intestine, catalase activity in the serum and liver increased in fish-fed PBM-HI-based diets. In assessing the gastrointestinal mucosal morphology, the goblet cells producing neutral mucins were higher in PBM-HI-fed fish than the control. PBM-HI diets also enhanced bacterial richness and diversity and increased abundance for Lactobacillus, Clostridium, and Ruminococcus. In summary, combining full-fat HI with PBM allowed complete replacement of FM with no negative effects on growth whilst improving gut health. Such diets would be beneficial for the aquaculture industry, both ecologically and economically, as well as providing value-adding to animal waste as alternative protein sources for aquafeed production.
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Affiliation(s)
- Md Reaz Chaklader
- School of Molecular and Life Sciences, Curtin University, 1 Turner Avenue, Bentley, WA 6102, Australia.
| | - Janet Howieson
- School of Molecular and Life Sciences, Curtin University, 1 Turner Avenue, Bentley, WA 6102, Australia
| | - Md Javed Foysal
- School of Molecular and Life Sciences, Curtin University, 1 Turner Avenue, Bentley, WA 6102, Australia; Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Ravi Fotedar
- School of Molecular and Life Sciences, Curtin University, 1 Turner Avenue, Bentley, WA 6102, Australia
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49
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DeJong MP, Ritter SC, Fransen KA, Tresnak DT, Golinski AW, Hackel BJ. A Platform for Deep Sequence-Activity Mapping and Engineering Antimicrobial Peptides. ACS Synth Biol 2021; 10:2689-2704. [PMID: 34506711 DOI: 10.1021/acssynbio.1c00314] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Developing potent antimicrobials, and platforms for their study and engineering, is critical as antibiotic resistance grows. A high-throughput method to quantify antimicrobial peptide and protein (AMP) activity across a broad continuum would be powerful to elucidate sequence-activity landscapes and identify potent mutants. Yet the complexity of antimicrobial activity has largely constrained the scope and mechanistic bandwidth of AMP variant analysis. We developed a platform to efficiently perform sequence-activity mapping of AMPs via depletion (SAMP-Dep): a bacterial host culture is transformed with an AMP mutant library, induced to intracellularly express AMPs, grown under selective pressure, and deep sequenced to quantify mutant depletion. The slope of mutant growth rate versus induction level indicates potency. Using SAMP-Dep, we mapped the sequence-activity landscape of 170 000 mutants of oncocin, a proline-rich AMP, for intracellular activity against Escherichia coli. Clonal validation supported the platform's sensitivity and accuracy. The mapped landscape revealed an extended oncocin pharmacophore contrary to earlier structural studies, clarified the C-terminus role in internalization, identified functional epistasis, and guided focused, successful synthetic peptide library design, yielding a mutant with 2-fold enhancement in both intracellular and extracellular activity. The efficiency of SAMP-Dep poises the platform to transform AMP engineering, characterization, and discovery.
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Affiliation(s)
- Matthew P. DeJong
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Seth C. Ritter
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Katharina A. Fransen
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Daniel T. Tresnak
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Alexander W. Golinski
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Benjamin J. Hackel
- Department of Chemical Engineering and Materials Science, University of Minnesota − Twin Cities, Minneapolis, Minnesota 55455, United States
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50
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He C, Lei J, Yao Y, Qu X, Chen J, Xie K, Wang X, Yi Q, Xiao B, Guo S, Zou X. Black Soldier Fly ( Hermetia illucens) Larvae Meal Modulates Intestinal Morphology and Microbiota in Xuefeng Black-Bone Chickens. Front Microbiol 2021; 12:706424. [PMID: 34603233 PMCID: PMC8482533 DOI: 10.3389/fmicb.2021.706424] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/26/2021] [Indexed: 12/22/2022] Open
Abstract
The addition of Hermetia illucens larvae meal (HILM) to the feed could contribute to particular antimicrobial and intestinal health in animal husbandry. This study was conducted to investigate the effects of HILM on intestinal morphology and microbial diversity in different intestinal segments of Xuefeng black-bone chickens. All of 432 birds (45 weeks old) were randomly assigned to four equal groups with six replicates and 18 hens in each replicate: (A) basal diet, (B) basal diet with 1% HILM, (C) basal diet with 3% HILM, and (D) basal diet with 5% HILM. The results showed that, compared with the basal diet group, the HILM supplement significantly increased the abundance-based coverage estimator (ACE) and Chao index in cecum (p < 0.05). Diet with 1% HILM significantly increased the villus height (VH) of the duodenum (p < 0.05) and cecum microbial diversity as represented by the Simpson index (p < 0.05). In particular, 1% HILM displayed a markedly increase in the genus unclassified Bacteroidales (cecum, p < 0.05). A basal diet with 3% HILM markedly increased the beneficial genus Romboutsia (jejunum, p < 0.05). Also, principal component analysis (PCA) cluster analysis showed that 3% of HILM was more individual than other groups (p < 0.05). However, 5% HILM decreased the VH and the ratio of villus height to crypt depth (VH/CD) of the jejunum and increased beneficial bacteria such as Staphylococcus (p < 0.05), which was regarded as pathogenetic genera. In conclusion, we found that HILM improved intestinal morphology and increased microbiological diversity and species abundance. Together, dietary supplementation of 1 or 3% HILM might benefit the intestinal morphology and intestinal microbiota of Xuefeng black-bone chicken. However, the addition of 5% HILM could decrease VH and the ratio of VH/CD of the jejunum and increased pathogenetic genera. HILM was an excellent protein substitute for Xuefeng black-bone chickens, which could meet the nutritional requirements under the condition of less feed. These results provide information for HILM meal as an alternative source of soybean meal in Xuefeng black-bone chickens’ feed.
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Affiliation(s)
- Changqing He
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China.,College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Jiaxing Lei
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China.,College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Yaling Yao
- Huaihua Animal Husbandry and Fishery Affairs Center, Huaihua, China
| | - Xiangyong Qu
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China.,College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Jifa Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China.,College of Life Science and Resources and Environment, Yichun University, Yichun, China
| | - Kailai Xie
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China
| | - Xingju Wang
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China
| | - Qi Yi
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China
| | - Bing Xiao
- Hunan Yunfeifeng Agricultural Co., Ltd., Huaihua, China
| | - Songchang Guo
- Hunan Engineering Research Center of Poultry Production Safety, Hunan Agricultural University, Changsha, China.,College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Xiaoyan Zou
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, China
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