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Suriyakala G, Sathiyaraj S, Balasundaram M, Murugan K, Babujanarthanam R, Gandhi AD. Plumeria alba flower extract-mediated synthesis of recyclable chitosan-coated cadmium nanoparticles for pest control and dye degradation. Bioprocess Biosyst Eng 2023; 46:1483-1498. [PMID: 37552312 DOI: 10.1007/s00449-023-02915-z] [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] [Received: 04/03/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023]
Abstract
In the current scenario, many synthetic chemicals have used long-term to control pests and mosquitoes, leading to the resistance of strains and toxicity effect on human beings. To overcome the adverse problem in recent advances, the scientific community is looking into nanofabricated pesticides and mosquitoes. This study aims to synthesize the recyclable chitosan-coated cadmium nanoparticles (Ch-CdNps) using Plumeria alba flower extract, which was further applied for insecticidal and mosquitocidal activities. The synthesized Ch-CdNps were confirmed by UV spectroscopy and FTIR analysis. The XRD, TEM, and DLS results confirmed the crystallinity with a spherical shape at 80-100 nm. The insecticidal activity proves that Ch-CdNps inhibited Helicoverpa armigera and Spodoptera litura at 100 ppm. In mosquitocidal, LC50 values of larvicidal of 1st instar were 4.116, 4.33, and 4.564 µg/mL, and the remaining three stages of instars, pupicidal, adulticidal, longevity, fecundity, and ovicidal assays inhibit the Anopheles stephensi followed by Aedes aegypti and Culex quinquefasciatus. Further, the first-order kinetics of photocatalytic degradation of methylene blue and methyl orange was confirmed. Based on the obtained results, Ch-CdNps can inhibit the pest, mosquitoes, and photocatalytic degradation.
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Affiliation(s)
- Gunasekaran Suriyakala
- Department of Biotechnology, M.M.E.S. Women's Arts and Science College, Melvisharam, Vellore, 632509, Tamil Nadu, India
| | - Sivaji Sathiyaraj
- Nano and Energy Bioscience Laboratory, Department of Biotechnology, Thiruvalluvar University, Serkkadu, Vellore, 632115, Tamil Nadu, India
| | - M Balasundaram
- Biochemistry Unit, Faculty of Medicine, AIMST University, Kedah, Malaysia
| | - Kadarkarai Murugan
- Division of Entomology, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - Ranganathan Babujanarthanam
- Nano and Energy Bioscience Laboratory, Department of Biotechnology, Thiruvalluvar University, Serkkadu, Vellore, 632115, Tamil Nadu, India
| | - Arumugam Dhanesh Gandhi
- Nano and Energy Bioscience Laboratory, Department of Biotechnology, Thiruvalluvar University, Serkkadu, Vellore, 632115, Tamil Nadu, India.
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Devi S, Diksha, Verma J, Sohal SK, Manhas RK. Insecticidal potential of endophytic Streptomyces sp. against Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) and biosafety evaluation. Toxicon 2023; 233:107246. [PMID: 37586611 DOI: 10.1016/j.toxicon.2023.107246] [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] [Received: 06/14/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/18/2023]
Abstract
Fruit flies of Tephritidae family pose a serious threat to cultivation of fruits and vegetables across the world. Among them, melon fruit fly, Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) is a devastating pest of plants from Cucurbitaceae family. In a rising concern about the harmful effects associated with the use of chemical insecticides and development of resistance in pest insects, safer pest management strategies such as, use of biopesticides of microbial origin are being contemplated. Therefore, the present study aimed to evaluate the insecticidal potential of Streptomyces sp. SP5 protein extract against Z. cucurbitae. MTT assay, Ames mutagenicity, DNA nicking, and comet assay were conducted to determine the biosafety of protein extract. Second instar larvae of Z. cucurbitae were treated with various concentrations (1, 100, 200, 300, 400, and 500 μg/ml) of Streptomyces sp. SP5 protein extract. The protein extract showed significant larvicidal effects with LC50 value of 308.92 μg/ml. The percentage of adults emerged declined with increase in concentration. There was significant prolongation in developmental durations of the larvae. Various morphological aberrations in the form of deformed adults and pupae and decline in pupal weight were also observed. The nutritional physiology of the treated larvae was also adversely affected. The results from biosafety evaluation revealed antimutagenic and non-toxic nature of Streptomyces sp. proteins. This study indicates that Streptomyces sp. SP5 has the potential to be used as an ecologically safe biocontrol agent against Z. cucurbitae.
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Affiliation(s)
- Sapna Devi
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Diksha
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Jaya Verma
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Satwinder Kaur Sohal
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Rajesh Kumari Manhas
- Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
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Bai Y, Ren D, Li F, Hu J, Pan H. Genome Mining and Molecular Networking Guided Isolation of Antimycin Analogs with Antifeedant Activities from the Deep-Sea-Derived Streptomyces sp. NA13. Chem Biodivers 2023; 20:e202300715. [PMID: 37357143 DOI: 10.1002/cbdv.202300715] [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: 05/19/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 06/27/2023]
Abstract
Polyphagous insects could affect agricultural production, which leads to serious economic losses. Due to the negative effects of synthesized insecticides, finding eco-friendly and new biopesticides is emergent. To develop natural origin insecticides, an integrative approach combining antifeedant activity screening, genome mining, and molecular networking has been applied to discover antifeedant secondary metabolites from Streptomyces sp. NA13, which leads to the isolation of a novel antimycin Q (1) and six known antimycin analogs (antimycins A1a, A2a, A3a, A4a, A7a, and N-formylantimycic acid methyl ester, 2-7). Their structures were identified by high-resolution mass spectrometry (HR-MS) and nuclear magnetic resonance (NMR) spectroscopic. The absolute configuration of 1 was elucidated by the comparison of coupling constant, electronic circular dichroism (ECD) analysis, and NMR calculations. 1-6 exhibited different levels of antifeedant activities against Helicoverpa armigera, especially 1-4. At the same time, the antifeedant activity of antimycin was reported firstly.
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Affiliation(s)
- Yan Bai
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Duo Ren
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, 110016, China
| | - Fenglin Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Jiangchun Hu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Huaqi Pan
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China
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Diab MK, Mead HM, Khedr MA, Nafie MS, Abu-Elsaoud AM, Hanora A, El-Shatoury SA. Endophytic actinobacteria from wild medicinal plants are a natural source of insecticide to control the African cotton leafworm (Spodoptera littoralis). AMB Express 2023; 13:47. [PMID: 37184816 DOI: 10.1186/s13568-023-01550-x] [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: 02/01/2023] [Accepted: 04/20/2023] [Indexed: 05/16/2023] Open
Abstract
Insecticide resistance in agricultural pests has prompted the need to discover novel compounds with new modes of action. We investigated the potency of secondary metabolites from seventy endophytic actinobacteria against laboratory and field strains of Spodoptera littoralis (fourth instar), comparable to the bioinsecticide spinetoram (Radiant SC 12%). Endophytes from Artemisia herba-alba and A. judaica were highly effective. Chemical profiling of the most potent metabolite of the strain Streptomyces sp. ES2 was investigated using LC-QTOF-MS-MS technique, and the activity was validated through molecular docking studies. Metabolic extracts from actinobacteria belonging to Streptomyces, Nocardioides, and Pseudonocardia showed immediate and latent death to the Spodoptera littoralis fourth instar larvae. The metabolite from strain ES2 has shown the most promising and significant histopathological and inhibitory effects on the fourth instar larvae. ES2 metabolite caused lesions in the body wall cuticle, indicating a different mode of action than that of Radiant. Chemical profiling of ES2 showed the presence of cyromazine (molt inhibitor), 4-nitrophenol, and diazinon as key constituents. In conclusion, these findings suggest that secondary metabolites from endophytic actinobacteria inhabiting wild medicinal plants can be a sustainable source for promising natural biocontrol agents. This is the first illustration of the insecticidal activity of Artemisia spp. microbiome, and natural cyromazine synthesis by actinobacteria.
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Affiliation(s)
- Mohamed K Diab
- Agricultural Research Center, Pest Physiology Department, Plant Protection Research Institute, Giza, 12311, Egypt
| | - Hala M Mead
- Agricultural Research Center, Pest Physiology Department, Plant Protection Research Institute, Giza, 12311, Egypt
| | - Mohamad A Khedr
- Agricultural Research Center, Cotton Leafworm Department, Plant Protection Research Institute, Giza, 12311, Egypt
| | - Mohamed S Nafie
- Faculty of Science, Chemistry Department, Suez Canal University, Ismailia, 41522, Egypt
| | | | - Amro Hanora
- Faculty of Pharmacy, Microbiology Department, Suez Canal University, Ismailia, 41522, Egypt
| | - Sahar A El-Shatoury
- Faculty of Science, Botany & Microbiology Department, Suez Canal University, Ismailia, 41522, Egypt.
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Raguvaran K, Kalpana M, Manimegalai T, Maheswaran R. Bioefficacy of isolated compound l-isoleucine, N-allyloxycarbonyl-, and dodecyl ester from entomopathogenic actinobacteria Actinokineospora fastidiosa against agricultural insect pests, human vector mosquitoes, and antioxidant activities. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:42608-42628. [PMID: 36260230 DOI: 10.1007/s11356-022-23565-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Spodoptera litura and Helicoverpa armigera are polyphagous pests of agricultural crops in the Asian tropics since these pests have been responsible for massive crop and carry economic losses and low commodity production. At the same time, mosquitoes are vectors for numerous dreadful diseases, which is the most important group of insect for their public health concern. Using synthetic insecticides to control the pests can lead to contamination of land surface and groundwater and impact beneficial soil organisms and nontarget species. Applications of bioactive compounds are received considerable attention across the world as alternatives to synthetic insecticides. In the current study, actinobacterial secondary metabolite was isolated from Actinokineospora fastidiosa for the first time. The effect of actinobacterial metabolite (l-isoleucine, N-allyloxycarbonyl-, and dodecyl ester) was assessed on agricultural pest S. litura and H. armigera, mosquito vectors larvae Ae. aegypti, An. stephensi, and Cx. quinquefasciatus. The bioactive fraction was characterized through UV, FTIR, and NMR analysis. GC-MS analyses reveal the existence of a bioactive compound with a respective retention time of 19.740 responsible for larvicidal activity. The bioefficacy of the l-isoleucine, N-allyloxycarbonyl-, and dodecyl ester showed high antifeedant activity on S. litura (80.80%) and H. armigera (84.49%); and larvicidal activity on S. litura (82.77%) and H. armigera (88.00%) at 25 μg/mL concentration, respectively. The effective LC50 values were 8.07 μg/mL (F = 2.487, r2 = 0.988, P ≤ 0.05) on S. litura and 7.53 μg/mL (F = 123.25, r2 = 0.951, P ≤ 0.05) on H. armigera. The mosquito larvicidal effect of isolated compounds l-isoleucine, N-allyloxycarbonyl-, and dodecyl ester treated against Ae. aegypti, An. stephensi, and Cx. quinquefasciatus the obtained percentage mortality was 96.66, 83.24, 64.52, 50.00, and 40.00% against Ae. aegypti; 100.00, 86.22, 73.81, 65.37, and 56.24% against An. stephensi; 100.00, 90.00, 76.24, 68.75, and 56.23% against Cx. quinquefasciatus. The mosquito larvae of Ae. aegypti obtained LC50 value was 13.25 μg/mL, F = 28.50, r2 = 0.90; on An. stephensi was 10.19 μg/mL, F = 15.55, r2 = 0.83, and Cx. quinquefasciatus was 9.68 μg/mL, F = 20.00, r2 = 0.87. Furthermore, l-isoleucine-, N-allyloxycarbonyl-, and dodecyl ester-treated larvae produced significant pupicidal activity on S. litura (62.71%) and H. armigera (66.50%) at 25 μg/mL, along with increased larval and pupal duration as compared to control group. Treated larvae revealed obliteration in the midgut epithelial cells and destruction of microvilli was noticed as compared to the control. The isolated compounds l-isoleucine, N-allyloxycarbonyl-, and dodecyl ester did not produce any significant mortality on zebrafish embryos in all tested concentrations on biosafety observation. The potential microbial isolated molecule may fit well in IPM programs. Since the risk to human health, the environment, etc. is unknown.
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Affiliation(s)
- Krishnan Raguvaran
- Entomology Laboratory, Department of Zoology, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Manickam Kalpana
- Entomology Laboratory, Department of Zoology, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Thulasiraman Manimegalai
- Entomology Laboratory, Department of Zoology, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Rajan Maheswaran
- Entomology Laboratory, Department of Zoology, Periyar University, Salem, 636 011, Tamil Nadu, India.
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Lahlou RA, Samba N, Soeiro P, Alves G, Gonçalves AC, Silva LR, Silvestre S, Rodilla J, Ismael MI. Thymus hirtus Willd. ssp. algeriensis Boiss. and Reut: A Comprehensive Review on Phytochemistry, Bioactivities, and Health-Enhancing Effects. Foods 2022; 11:3195. [PMID: 37430944 PMCID: PMC9601415 DOI: 10.3390/foods11203195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
Abstract
Members of the Lamiaceae family are considered chief sources of bioactive therapeutic agents. They are important ornamental, medicinal, and aromatic plants, many of which are used in traditional and modern medicine and in the food, cosmetic, and pharmaceutical industries. In North Africa, on the Mediterranean side, there is the following particularly interesting Lamiaceous species: Thymus hirtus Willd. sp. Algeriensis Boiss. Et Reut. The populations of this endemic plant are distributed from the subhumid to the lower arid zone and are mainly employed as ethnomedicinal remedies in the following Maghreb countries: Algeria, Libya, Morocco, and Tunisia. In fact, they have been applied as antimicrobial agents, antispasmodics, astringents, expectorants, and preservatives for several food products. The species is commonly consumed as a tea or infusion and is used against hypercholesterolemia, diabetes, respiratory ailments, heart disease, and food poisoning. These medicinal uses are related to constituents with many biological characteristics, including antimicrobial, antioxidant, anticancer, anti-ulcer, anti-diabetic, insecticidal, and anti-inflammatory activities. This review aims to present an overview of the botanical characteristics and geographical distribution of Thymus algeriensis Boiss. Et Reut and its traditional uses. This manuscript also examines the phytochemical profile and its correlation with biological activities revealed by in vitro and in vivo studies.
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Affiliation(s)
- Radhia Aitfella Lahlou
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
- Biology Department, Faculty of Sciences, University of M’Hamed Bougara, Boumerdes 35000, Algeria
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Nsevolo Samba
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Pedro Soeiro
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Gilberto Alves
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ana Carolina Gonçalves
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Luís R. Silva
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
- CPIRN-UDI/IPG—Centro de Potencial e Inovação em Recursos Naturais, Unidade de Investigação Para o Desenvolvimento do Interior do Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal
| | - Samuel Silvestre
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- CICS-UBI—Health Sciences Research Center, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, Rua Larga, 3004-517 Coimbra, Portugal
| | - Jesus Rodilla
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Maria Isabel Ismael
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal
- Fiber Materials and Environmental Technologies (FibEnTech), University of Beira Interior, 6201-001 Covilhã, Portugal
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Insecticidal characteristics and structural identification of the potential active compounds from Streptomyces sp. KR0006: Strain improvement through mutagenesis. PLoS One 2022; 17:e0274766. [PMID: 36155980 PMCID: PMC9512179 DOI: 10.1371/journal.pone.0274766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 09/04/2022] [Indexed: 11/19/2022] Open
Abstract
Pest control by biological means is an effective, eco-friendly, and promising method that typically involves compounds naturally derived from actinomycetes. Thus, the present study aimed to screen, characterize, and identify the structure of insecticidal compounds from Streptomyces sp. KR0006 and increase the activity through mutagenesis. In the examination of the insecticidal activity level of the isolates, Streptomyces sp. KR0006 metabolite showed significant activity against larvae and moths of Plutella xylostella. Taxonomic analyses of the 16S rRNA gene sequences revealed that the isolated KR0006 strain tended to be 99% consistent with Streptomyces cinereoruber strain NBRC 12756. Three active compounds isolated from the culture filtrate of KR0006 were purified by solvent partition, mid-pressure liquid chromatography (MPLC), Sephadex LH20 column chromatography, and high-performance liquid chromatography (HPLC). By performing 1H-NMR, 13C-NMR, and 2D-NMR experiments, and high-resolution electrospray ionization mass spectrometry analysis, the 316-HP2, 316-HP3, and 316-HP5 compounds were inferred as antimycin A3a (MW, 519.; C26H36N2O9), antimycin A8a (MW, 534; C27H38N2O9), and antimycin A1a (MW, 548; C28H40N2O9) respectively. Mutant U67 obtained from exposure to ultraviolet (UV) irradiation (254 nm, height 17 cm) for 70 seconds resulted in a 70% more larval mortality than that of the initial wild culture. The second mutation of the culture broth enhanced insecticidal activity by 80 and 100% compared with the first mutation and initial medium, respectively. Our study found that Streptomyces sp. KR0006 strain produces insecticidal active compounds and could be used for practical pest management.
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Mayanti T, Sinaga SE, Supratman U. Phytochemistry and biological activity of Lansium domesticum Corr. species: a review. J Pharm Pharmacol 2022; 74:1568-1587. [PMID: 36094290 DOI: 10.1093/jpp/rgac057] [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: 04/04/2022] [Accepted: 07/26/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This study aims to review and describe the ethnobotanical, phytochemical and biological activity of various extracts and compounds isolated from Lansium domesticum Corr. from 1967 to 2022 and to study the opportunities that can be developed in the future in the pharmaceutical and pharmacology fields. The related articles, followed by the classification of L. domesticum Corr. according to ethnobotanical, biological and phytochemical properties, were collected from SciFinder, Google Scholar and PubMed. KEY FINDINGS More than 80 compounds have been isolated and identified from L. domesticum Corr., including terpenoids and their glycosides. Furthermore, the pharmacological activity of the extracts and pure compounds of L. domesticum Corr. tested in vitro and in vivo were mainly confirmed to include antifeedant, antimalarial, antimicrobial, antibacterial, and radical scavenging activity, antimutagenic, and anticancer. SUMMARY In conclusion, based on this review, all data on the phytochemical and biological activity of L. domesticum Corr. can be used to support scientists in further research aim to determine the reaction mechanism of the extracts or compounds and need to be further validated using in vivo models together with toxicological analysis to establish their maximum tolerated dose.
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Affiliation(s)
- Tri Mayanti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Siska Elisahbet Sinaga
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Unang Supratman
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia.,Central Laboratory, Universitas Padjadjaran, Jatinangor 45363, Indonesia
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Amelia-Yap ZH, Azman AS, AbuBakar S, Low VL. Streptomyces derivatives as an insecticide: Current perspectives, challenges and future research needs for mosquito control. Acta Trop 2022; 229:106381. [PMID: 35183537 DOI: 10.1016/j.actatropica.2022.106381] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/16/2022] [Accepted: 02/16/2022] [Indexed: 12/13/2022]
Abstract
The pervasiveness of arboviruses in wreaking havoc on public health has lingered on international health agendas. A scarcity of mosquito-borne disease vaccines and therapies demands prompt attention, as billions of people worldwide are at risk of infections. It is widely known that vector control continues, and in some diseases, remains the only resort in suppressing disease transmissions we presently possess at its disposal. But the use of commercial insecticides is being crippled by the widespread insecticide resistance, which greatly menaces their efficacies, toxicological repercussions such as environmental pollution and human health risk. Rather, an environmentally benign technique of employing Streptomyces isolates from settings such as terrestrial soils, marine sediments, and mangrove soils for Culicidae management has recently received a lot of positive attention. Streptomyces' capacities to produce a wide range of bioactive secondary metabolites that contribute to pharmaceutical, agricultural and veterinarian, Streptomyces-derived bioactive compounds are increasingly being considered for use in vector control. Herein, we compiled all of the available datasets on the effectiveness of Streptomyces-derived compounds against major mosquito vectors of medical importance. Aedes, Anopheles, and Culex are used to assess the toxicity of crude extracts or fractions. This paper reviewed the promising ovicidal, larvicidal, and pupacidal effects of different Streptomyces strains. Notably, no research into the adulticidal effect of Streptomyces-derived compounds has yet been done. Aside from the genetic makeup, the production of secondary metabolites from Streptomyces depends on the growing conditions. And that, to optimise the maximum yield of highly potent bioactive compounds being extracted, solvents' choice is of paramount importance. Thus, both cultivation parameters and the choice of organic solvents for secondary metabolites extraction will be discussed. Furthermore, biases derived from different studies have implied the need for standardizing experimental procedures. While entomological data should be collected consistently across all studies to expedite evidence-based policymaking of bioinsecticides, the quality of data from vector control interventions - particularly the experimental design, execution, analysis, and presentation of results of vector control studies - will be thoroughly reviewed. Lastly, to promote consistency and reliability, these knowledge gaps are identified, along with a discussion of current perspectives on vector control, global bioinsecticide trends, challenges on commercializing bioinsecticides and future research needs.
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Affiliation(s)
- Zheng Hua Amelia-Yap
- Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Adzzie Shazleen Azman
- School of Science, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Malaysia
| | - Sazaly AbuBakar
- Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Van Lun Low
- Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia.
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Abdallah HM, Mohamed GA, Ibrahim SRM. Lansium domesticum-A Fruit with Multi-Benefits: Traditional Uses, Phytochemicals, Nutritional Value, and Bioactivities. Nutrients 2022; 14:nu14071531. [PMID: 35406144 PMCID: PMC9002712 DOI: 10.3390/nu14071531] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/02/2022] [Accepted: 04/03/2022] [Indexed: 02/04/2023] Open
Abstract
Lansium domesticum (Langsat, Meliaceae) is a tropical fruit mainly found in Southeast Asian countries, particularly in Thailand, Malaysia, Indonesia, and the Philippines. Traditionally, it is utilized as a folk treatment for eye inflammation, ulcers, diarrhea, dysentery, fever, spasms, flatulence, worms, insect bites, scorpion stings, and malaria. Additionally, it is utilized as a mosquito repellent, skin moisturizer and whitening agent. Pharmacological research showed that the plant has a wide array of bioactivities, including antimalarial, antifeedant, anti-aging, wound healing, antioxidant, cytotoxic, analgesic, antibacterial, antimutagenic, insecticidal, and larvicidal. The most commonly described activities were attributed to the presence of terpenoids and phenolics. Further, some studies reported the preparation of nanoparticles and pharmaceutical formulations from the plant. This review highlights the potential of L. domesticum as herbal medicine. It provides an overview about the reported data on L. domesticum from 1931 to November 2021, including nutritional value, traditional uses, phytoconstituents, and bioactivities, as well as nanoparticles and pharmaceutical formulations.
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Affiliation(s)
- Hossam M. Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Gamal A. Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Correspondence:
| | - Sabrin R. M. Ibrahim
- Department of Chemistry, Preparatory Year Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
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Porsani MV, Poitevin CG, Tralamazza SM, de Souza MT, de Souza MT, da Silva ÉDB, Zawadneak MAC, Pimentel IC, de Melo IS. Streptomyces spp. Isolated from Marine and Caatinga Biomes in Brazil for the Biological Control of Duponchelia fovealis. NEOTROPICAL ENTOMOLOGY 2022; 51:299-310. [PMID: 35020183 DOI: 10.1007/s13744-022-00942-1] [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: 07/20/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Actinobacteria have been drawing attention due to their potential for the development of new pest control products. We hereby assess the effects of Streptomyces isolated from marine and caatinga biomes against Duponchelia fovealis Zeller (Lepidoptera: Crambidae), a pest associated with the strawberry culture at a global scale. To this end, eggs deposited by adults were immersed for 5 s in a bacterial suspension, and the larvae were fed on leaflets placed in glass tubes containing bacterial suspensions. In both treatments, the control was a saline solution. The bioassays demonstrated that the Streptomyces strains were able to cause the death of D. fovealis eggs (≈ 40%) and larvae (≈ 65%) compared to untreated eggs (1.4%) and larvae (2.0%). The crude extract of strain T49 and the chitinase extract of strain T26 affected larval growth when applied directly to the thorax of first-instar larvae (larval-adult lifespan of 65.3 ± 0.5 days and 67.5 ± 0.7 days, respectively; survival of 61.2 ± 1.2%) in relation to the control treatment (larval-adult lifespan of 41.75 ± 0.2 days and survival of 83.7 ± 2.6%). The Streptomyces spp. strains T41, T49, and T50 caused antifeeding activity. Apart from larval mortality, the adults that emerged from the larvae exposed to the extracts presented morphological abnormalities, and the moths' chitin spectra showed clear alterations to the pupa and wings. Our studies show, for the very first time, that Streptomyces isolated from the marine environment and the Caatinga biome are effective at provoking the mortality of D. fovealis and are promising agents for developing new products with biological control properties.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Itamar Soares de Melo
- Embrapa Environment, Brazilian Agricultural Research Corporation, Jaguariúna, São Paulo, Brazil
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12
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Li Z, Li A, Dai W, Leng H, Liu S, Jin L, Sun K, Feng J. Skin Microbiota Variation Among Bat Species in China and Their Potential Defense Against Pathogens. Front Microbiol 2022; 13:808788. [PMID: 35432245 PMCID: PMC9009094 DOI: 10.3389/fmicb.2022.808788] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/18/2022] [Indexed: 11/13/2022] Open
Abstract
Host-associated skin bacteria are essential for resisting pathogen infections and maintaining health. However, we have little understanding of how chiropteran skin microbiota are distributed among bat species and their habitats, or of their putative roles in defending against Pseudogymnoascus destructans in China. In this study, we characterized the skin microbiomes of four bat species at five localities using 16S rRNA gene amplicon sequencing to understand their skin microbial composition, structure, and putative relationship with disease. The alpha- and beta-diversities of skin microbiota differed significantly among the bat species, and the differences were affected by environmental temperature, sampling sites, and host body condition. The chiropteran skin microbial communities were enriched in bacterial taxa that had low relative abundances in the environment. Most of the potential functions of skin microbiota in bat species were associated with metabolism. Focusing on their functions of defense against pathogens, we found that skin microbiota could metabolize a variety of active substances that could be potentially used to fight P. destructans. The skin microbial communities of bats in China are related to the environment and the bat host, and may be involved in the host's defense against pathogens.
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Affiliation(s)
- Zhongle Li
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Aoqiang Li
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
- Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, China
| | - Wentao Dai
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
| | - Haixia Leng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
| | - Sen Liu
- College of Life Sciences, Henan Normal University, Xinxiang, China
| | - Longru Jin
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
| | - Keping Sun
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
- Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, China
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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Shah AZ, Ma C, Zhang Y, Zhang Q, Xu G, Yang G. Decoyinine Induced Resistance in Rice against Small Brown Planthopper Laodelphax striatellus. INSECTS 2022; 13:104. [PMID: 35055947 PMCID: PMC8781946 DOI: 10.3390/insects13010104] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 11/17/2022]
Abstract
Induced resistance against SBPH via microbial pesticides is considered as an eco-friendly and promising management approach. In this study, the induced resistance against SBPH in rice seedling by a new potential microbial pesticide, decoyinine (DCY), a secondary metabolite produced by Streptomyces hygroscopicus, was evaluated to investigate the effects of DCY on SBPH's biological and population parameters along with defense-related physiological and biochemical indices in rice against SBPH feeding. We found that DCY has potential to improve rice resistance and significantly reduced the fecundity of SBPH. Laboratory results revealed that DCY treated rice significantly changed SBPH's fecundity and population life table parameters. The concentrations of hydrogen peroxide (H2O2), soluble sugars and malondialdehyde (MDA) were significantly lower in DCY treated rice plants against SBPH infestation at 24, 48 and 96 hours post infestation (hpi), respectively. The concentrations of antioxidant enzymes, catalase (CAT) was significantly higher at 72 hpi, while super oxidase dismutase (SOD) and peroxidase (POD) concentrations were recorded higher at 96 hpi. The concentrations of synthases enzymes, phenyl alanine ammonia-lyase (PAL) was higher at 48 hpi, whereas polyphenol oxidase (PPO) concentration was maximum at 72 hpi against SBPH infestation. The results imply that DCY has unique properties to enhance rice resistance against SBPH by stimulating plant defensive responses. Microbial pesticides may be developed as an alternative to chemical pest control.
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Affiliation(s)
- Amir Zaman Shah
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
| | - Chao Ma
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
| | - Yuanyuan Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
| | - Qiuxin Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
| | - Gang Xu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Guoqing Yang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (A.Z.S.); (C.M.); (Y.Z.); (Q.Z.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
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Jagannathan SV, Manemann EM, Rowe SE, Callender MC, Soto W. Marine Actinomycetes, New Sources of Biotechnological Products. Mar Drugs 2021; 19:365. [PMID: 34201951 PMCID: PMC8304352 DOI: 10.3390/md19070365] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023] Open
Abstract
The Actinomycetales order is one of great genetic and functional diversity, including diversity in the production of secondary metabolites which have uses in medical, environmental rehabilitation, and industrial applications. Secondary metabolites produced by actinomycete species are an abundant source of antibiotics, antitumor agents, anthelmintics, and antifungals. These actinomycete-derived medicines are in circulation as current treatments, but actinomycetes are also being explored as potential sources of new compounds to combat multidrug resistance in pathogenic bacteria. Actinomycetes as a potential to solve environmental concerns is another area of recent investigation, particularly their utility in the bioremediation of pesticides, toxic metals, radioactive wastes, and biofouling. Other applications include biofuels, detergents, and food preservatives/additives. Exploring other unique properties of actinomycetes will allow for a deeper understanding of this interesting taxonomic group. Combined with genetic engineering, microbial experimental evolution, and other enhancement techniques, it is reasonable to assume that the use of marine actinomycetes will continue to increase. Novel products will begin to be developed for diverse applied research purposes, including zymology and enology. This paper outlines the current knowledge of actinomycete usage in applied research, focusing on marine isolates and providing direction for future research.
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Affiliation(s)
| | | | | | | | - William Soto
- Department of Biology, College of William & Mary, Williamsburg, VA 23185, USA; (S.V.J.); (E.M.M.); (S.E.R.); (M.C.C.)
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Pathma J, Kennedy RK, Bhushan LS, Shankar BK, Thakur K. Microbial Biofertilizers and Biopesticides: Nature’s Assets Fostering Sustainable Agriculture. RECENT DEVELOPMENTS IN MICROBIAL TECHNOLOGIES 2021. [DOI: 10.1007/978-981-15-4439-2_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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16
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Qiu Y, Yoo HM, Cho N, Yan P, Liu Z, Cheng J, Suh JW. Secondary Metabolites Isolated From Streptomyces sp. MJM3055 and Their Cytotoxicity Against Jurkat Cells. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20977591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Bacteria of the genus Streptomyces are used in multiple applications in the medical field owing to their ability to generate large quantities of secondary metabolites. Chromatographic purification of Streptomyces sp. MJM3055 led to the isolation of 1 new streptenol derivative, 1- O-acetylstreptenol A (2), along with (3 E,8 E)-1-hydroxydeca-3,8-dien-5-one (1), streptenol A (3), cyclo-(L-Ile-L-Pro) (4), streptazolin (5), and 7- O-acetylstreptazolin (6). The structures were elucidated by interpretation of combined mass spectrometry, circular dichroism, and 2-dimensional nuclear magnetic resonance spectroscopic data. Among these isolated compounds, compound 1 exhibited strong cytotoxic effects against Jurkat T cells.
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Affiliation(s)
- Yinda Qiu
- College of Pharmacy, Chonnam National University, Gwangju, Republic of Korea
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Hee Min Yoo
- Microbiological Analysis Team, Biometrology Group, Korea Research Institute of Standards and Science (KRISS), Daejeon, Republic of Korea
| | - Namki Cho
- College of Pharmacy, Chonnam National University, Gwangju, Republic of Korea
| | - Pengcheng Yan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Zhiguo Liu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Jinhua Cheng
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin, Gyeonggi, Republic of Korea
| | - Joo-Won Suh
- Center for Nutraceutical and Pharmaceutical Materials, Myongji University, Yongin, Gyeonggi, Republic of Korea
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Manimegalai T, Raguvaran K, Kalpana M, Maheswaran R. Green synthesis of silver nanoparticle using Leonotis nepetifolia and their toxicity against vector mosquitoes of Aedes aegypti and Culex quinquefasciatus and agricultural pests of Spodoptera litura and Helicoverpa armigera. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:43103-43116. [PMID: 32725570 DOI: 10.1007/s11356-020-10127-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/13/2020] [Indexed: 05/02/2023]
Abstract
Pest insects causing damage to cultivable crops and food products by feeding, fecundity, and parasitizing livestock, also being a nuisance to human health. In consideration with human health, the World Health Organization reports that more than 50% of the world's population is presently at risk from mosquito-borne diseases. Mosquitoes are primary vectors for major dreadful diseases such as yellow fever, malaria, and dengue fever, which infect millions of human beings all over the world and kill millions of peoples every year. The present research work was carried out to evaluate the antifeedant, larvicidal, pupicidal, larval, and pupal duration activity of Leonotis nepetifolia-mediated silver nanoparticles (AgNPs) against Spodoptera litura, Helicoverpa armigera, Aedes aegypti, and Culex quinquefasciatus. Biosynthesized AgNPs were characterized through various techniques such as UV-Vis spectrometer, X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), and zeta potential analysis. The AgNPs showed potential antifeedant activity of 78.77% and 82.16% against the larvae of S. litura and H. armigera, respectively. The maximum larval mortality rate (78.49% and 72.70%) and maximum pupal mortality rate (84.66% and 77.44%) were observed against S. litura and H. armigera. Mosquito larvae were tested with biosynthesized AgNPs, and recorded LC50 values were 47.44 ppm and 35.48 ppm on A. aegypti and C. quinquefasciatus, respectively. The histological examinations showed that the acceleration of the nanomaterial caused severe tissue damage in the epithelial and goblet cells in the larval midgut region of S. litura, H. armigera, A. aegypti, and C. quinquefasciatus. Biosynthesis of silver nanoparticles using L. nepetifolia is an ideal eco-friendly approach for the management of insect pests. Graphical abstract.
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Affiliation(s)
- Thulasiraman Manimegalai
- Entomology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, Tamil Nadu, 636 011, India
| | - Krishnan Raguvaran
- Entomology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, Tamil Nadu, 636 011, India
| | - Manickam Kalpana
- Entomology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, Tamil Nadu, 636 011, India
| | - Rajan Maheswaran
- Entomology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem, Tamil Nadu, 636 011, India.
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Yuan XL, Wang XF, Xu K, Li W, Chen D, Zhang P. Characterization of a New Insecticidal Anthraquinone Derivative from an Endophyte of Acremonium vitellinum against Helicoverpa armigera. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11480-11487. [PMID: 33006473 DOI: 10.1021/acs.jafc.0c05680] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Endophytic fungi have proven to be prolific producers of bioactive secondary metabolites with agricultural applications. In this study, bioassay-guided isolation of the endophytic fungus Acremonium vitellinum yielded four anthraquinone derivatives (compounds 1-4), including a previously undescribed dimethylated derivative of bipolarin, 6,8-di-O-methylbipolarin (1). Their structures were determined by 1D and 2D nuclear magnetic resonance analysis as well as high-resolution electrospray ionization mass spectrometry data, and the absolute configuration of 1 was established by comparing the calculated and experimental electronic circular dichroism spectra. The insecticidal activity of the isolated compounds against the cotton bollworm Helicoverpa armigera was evaluated. The new compound 1 showed the strongest larvicidal activity against the 3rd instar larvae of H. armigera with an LC50 value of 0.72 mg/mL. In addition, transcriptome sequencing was performed to evaluate the molecular mechanism of the insecticidal activity. In total, 5732 differentially expressed genes were found, among which 2904 downregulated genes and 2828 upregulated genes were mainly involved in cell autophagy, apoptosis, and DNA mismatch repair and replication. The results presented in this study reveal how 1 exerts its insecticidal effects against H. armigera via genome-wide differential gene expression analyses. Our findings suggest that anthraquinone derivatives are potential biopesticides for cotton bollworm control.
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Affiliation(s)
- Xiao-Long Yuan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, People's Republic of China
| | - Xiu-Fang Wang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, People's Republic of China
| | - Kuo Xu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, People's Republic of China
| | - Wei Li
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Dan Chen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, People's Republic of China
| | - Peng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, People's Republic of China
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Kim JH, Choi JY, Park DH, Park DJ, Park MG, Kim SY, Ju YJ, Kim JY, Wang M, Kim CJ, Je YH. Isolation and characterization of the insect growth regulatory substances from actinomycetes. Comp Biochem Physiol C Toxicol Pharmacol 2020; 228:108651. [PMID: 31678310 DOI: 10.1016/j.cbpc.2019.108651] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/21/2019] [Accepted: 10/26/2019] [Indexed: 11/19/2022]
Abstract
Insect growth regulators (IGRs) are attractive alternatives to chemical insecticides. Since it has been reported that secondary metabolites from actinomycetes show insecticidal activities against various insect pests, actinomycetes could be a potential source of novel IGR compounds. In the present study, insect juvenile hormone antagonists (JHANs) were identified from actinomycetes and their insect growth regulatory and insecticidal activities were investigated. A total of 363 actinomycetes were screened for their insect growth regulatory and insecticidal activities against Aedes albopictus and Plutella xylostella. Among them, Streptomyces sp. AN120537 showed the highest JHAN and insecticidal activities. Five antimycins were isolated as active compounds by assay-guided fractionation and showed high JHAN activities. These antimycins also exhibited significant insecticidal activities against A. albopictus, P. xylostella, F. occidentalis, and T. urticae. Moreover, dead larvae treated with these antimycins displayed morphological deformities that are similar to those of JH-based IGR-treated insects. This is the first report demonstrating that the insecticidal activities of antimycins resulted from their possible JHAN activity. Based on our results, it is expected that novel JHAN compounds potentially derived from actinomycetes could be efficiently applied as IGR insecticides with a broad insecticidal spectrum.
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Affiliation(s)
- Jong Hoon Kim
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Jae Young Choi
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Hwan Park
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong-Jin Park
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Min Gu Park
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - So Young Kim
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Yoon Jung Ju
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Jun Young Kim
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Minghui Wang
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Chang-Jin Kim
- Industrial Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Yeon Ho Je
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, Seoul 08826, Republic of Korea; Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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20
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Al-Ansari M, Alkubaisi N, Vijayaragavan P, Murugan K. Antimicrobial potential of Streptomyces sp. to the Gram positive and Gram negative pathogens. J Infect Public Health 2019; 12:861-866. [PMID: 31248813 DOI: 10.1016/j.jiph.2019.05.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/20/2019] [Accepted: 05/26/2019] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The occurrence of drug resistant infectious disease causing microbial pathogens was highly spreaded because of the wide level application of the commercially available antimicrobial agents. However, the eradication of the microbial pathogens was of huge demand. Although, many antimicrobial compounds were commercially available in the market however the spreading of the pathogens were hugely increased. Actinomycetes produce various secondary metabolites against pathogenic bacteria and fungi. The present investigation aimed to study the antimicrobial potential of the Streptomyces sp. towards infectious diseases causing pathogens. METHODS Culture dependable isolation techniques were followed for the isolation of the active actinomycetes isolates and the antimicrobial properties of the actinomcyetes were detected by primary screening techniques using modified starch casein agar medium. The active isolate was confirmed by various biochemical and morphological techniques. RESULTS In this study, 10 actinomycetes were isolated and later five were selected for secondary screening and noted significant activity against Enterobacter aerogenes and Proteus mirabilis. Among the selected Streptomyces sp., ES2 showed potent activity against selected microbes and was identified as Streptomyces sp. The studied isolates were resisitant towards streptomycin (10μg), ampicillin (50μg) and ciprofloxacin (5μg). The organic solvent extracts of the promising isolate ES2 prononunced comparatively better inhibitory properties towards the studied pathogenic bacteria. CONCLUSION Overall, the present study evidenced that the actinomycetes were promising candidate for the eradication of the pathogenic strains.
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Affiliation(s)
- Mysoon Al-Ansari
- Department of Botany and Microbiology, Female Campus, College of Science King Saud University, Riyadh, Saudi Arabia
| | - Noorah Alkubaisi
- Department of Botany and Microbiology, Female Campus, College of Science King Saud University, Riyadh, Saudi Arabia
| | - P Vijayaragavan
- Bioprocess Engineering Division, Smykon Biotech Pvt Ltd, Nagercoil, Kanyakumari, Tamil Nadu, 629201, India.
| | - K Murugan
- Department of Biotechnology, MS University, Thirunelveli, India
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Mathivanan A, Ravikumar S, Selvakumar G. Bioprospecting of sponge and its symbionts: New tool for mosquitocidal & insecticidal metabolites. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Chemical profiling of Streptomyces sp. Al-Dhabi-2 recovered from an extreme environment in Saudi Arabia as a novel drug source for medical and industrial applications. Saudi J Biol Sci 2019; 26:758-766. [PMID: 31049001 PMCID: PMC6486537 DOI: 10.1016/j.sjbs.2019.03.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/09/2019] [Accepted: 03/26/2019] [Indexed: 11/24/2022] Open
Abstract
Filamentous bacterial belonged to Streptomyces species were novel drug source for medical and industrial applications. However, the detailed identification of Streptomyces species from Saudi Arabian extreme environment for the identification novel drug source for medical and industrial applications were rarely studied. The Streptomyces strain Al-Dhabi-2 obtained from the thermophilic region kingdom of Saudi Arabia, exhibited antimicrobial potentials against the pathogenic microorganism were characterized. Biochemical and phylogenetic analysis confirmed that the strain was closely associated to the Streptomyces species. The chromatogram of GC-MS analysis of this ethyl acetate extract (EA) had diverse of chemical compounds namely benzene acetic acid (7.81%), acetic acid, methoxy-, 2-phenylethyl ester (6.01%) were the major compounds. EA of Al-Dhabi-2 showed inhibition zone ranged from 14 to 25 mm at 5 mg/well concentration against the tested microbial pathogens. Results revealed that the significant MIC values were observed against B. cereus, and E. faecalis by (less than 39 μg/ml) and against S. agalactiae with (78 μg/ml). Minimum inhibitory concentrations (MIC) for fungi: were also reported against Cryptococcus neoformans and Trichophyton mentagrophytes by (156 μg/ml), whilst Candida albicans and Aspergillus niger by (312 μg/ml). Results of this study showed that thermophilic actinobacteria could be promise source in the context of searching for unique antimicrobial agents with novel properties.
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Insecticidal Activities of Chloramphenicol Derivatives Isolated from a Marine Alga-Derived Endophytic Fungus, Acremonium vitellinum, against the Cotton Bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Molecules 2018; 23:molecules23112995. [PMID: 30453532 PMCID: PMC6278348 DOI: 10.3390/molecules23112995] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 11/16/2022] Open
Abstract
A great deal of attention has been focused on the secondary metabolites produced by marine endophytic fungi, which can be better alternatives to chemicals, such as biopesticides, for control of polyphagous pests. On the basis of its novel biocontrol attributes, chemical investigation of a marine alga-derived endophytic fungus, Acremonium vitellinum, resulted in the isolation of three chloramphenicol derivatives (compounds 1–3). Their chemical structures were elucidated by detailed analysis of their nuclear magnetic resonance spectra, high-resolution electrospray ionization mass spectrometry, and by comparison with the data available in the literature. In this paper, compound 2 was firstly reported as the natural origin of these fungal secondary metabolites. The insecticidal activities of compounds 1–3 against the cotton bollworm, Helicoverpa armigera, were evaluated. The natural compound 2 presented considerable activity against H. armigera, with an LC50 value of 0.56 ± 0.03 mg/mL (compared to matrine with an LC50 value of 0.24 ± 0.01 mg/mL). Transcriptome sequencing was used to evaluate the molecular mechanism of the insecticidal activities. The results presented in this study should be useful for developing compound 2 as a novel, ecofriendly and safe biopesticide.
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Novel and environmental friendly approach; Impact of Neem (Azadirachta indica) gum nano formulation (NGNF) on Helicoverpa armigera (Hub.) and Spodoptera litura (Fab.). Int J Biol Macromol 2018; 107:59-69. [DOI: 10.1016/j.ijbiomac.2017.08.145] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 08/14/2017] [Accepted: 08/27/2017] [Indexed: 12/13/2022]
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25
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Hassan SSU, Shaikh AL. Marine actinobacteria as a drug treasure house. Biomed Pharmacother 2017; 87:46-57. [DOI: 10.1016/j.biopha.2016.12.086] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 12/20/2016] [Accepted: 12/20/2016] [Indexed: 01/19/2023] Open
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Padmanaban VP, Verma P, Venkatabaskaran S, Keppayan T, Gopal D, Sekar AK, Ramalingam K. Antimicrobial potential and taxonomic investigation of piezotolerant Streptomyces sp. NIOT-Ch-40 isolated from deep-sea sediment. World J Microbiol Biotechnol 2017; 33:27. [DOI: 10.1007/s11274-016-2193-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 12/20/2016] [Indexed: 11/28/2022]
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Wei J, Zhang XY, Deng S, Cao L, Xue QH, Gao JM. α-Glucosidase inhibitors and phytotoxins from Streptomyces xanthophaeus. Nat Prod Res 2016; 31:2062-2066. [PMID: 28013556 DOI: 10.1080/14786419.2016.1269100] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Twenty-four metabolites 1-24 were isolated from the fermentation broth of Streptomyces xanthophaeus. Their structures were elucidated on the basis of spectroscopic analysis and by comparison of their NMR data with literature data reported. Daidzein (1), genistein (2) and gliricidin (3) inhibited α-glucosidase in vitro with IC50 values of 174.2, 36.1 and 47.4 μM, respectively, more potent than the positive control, acarbose. Docking study revealed that the amino acid residue Thr 215 is the essential binding site for active ligands 2. In addition, the phytotoxic effects of all compounds were assayed on radish seedlings, five of which, 3, 8, 13, 15 and 18, inhibited the growth of radish (Raphanus sativus) seedlings with inhibitory rates of >60% at a concentration of 100 ppm, which was comparable or superior to the positive control glyphosate. This is the first report of the phytotoxicity of the compounds.
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Affiliation(s)
- Jing Wei
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
| | - Xiu-Yun Zhang
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
| | - Shan Deng
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
| | - Lin Cao
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
| | - Quan-Hong Xue
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
| | - Jin-Ming Gao
- a Shaanxi Key Laboratory of Natural Products & Chemical Biology, School of Chemistry and Pharmacy , Northwest A&F University , Yangling , P.R. China
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Marathe K, Kasar S, Chaudhari A, Maheshwari V. Purification and characterization of a novel heterodimer protease inhibitor from Streptomyces spp. VL J2 with potential biopesticidal activity against H. armigera. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gopalakrishnan S, Rajendran V, Arumugam S, Sharma HC, Vadlamudi S, Bhimineni RK, V Gonzalez S, M Melø T, Simic N. Insecticidal activity of a novel fatty acid amide derivative from Streptomyces species against Helicoverpa armigera. Nat Prod Res 2016; 30:2760-2769. [PMID: 26956775 DOI: 10.1080/14786419.2016.1154055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Helicoverpa armigera, an important pest causes serious damage to grain legumes. The main objective of this study was to isolate and identify the metabolite against H. armigera from a previously characterised Streptomyces sp. CAI-155. The culture filtrate of CAI-155 was extracted using Diaion HP-20 and the active fractions were fractionated on Silica and C18 column chromatography. The C18 active fraction was further fractionated on Silica gel 60 F254 thin layer chromatography (TLC). The most active fraction (Rf 0.64) purified from TLC led to the identification of a novel metabolite N-(1-(2,2-dimethyl-5-undecyl-1,3-dioxolan-4-yl)-2-hydroxyethyl)stearamide by spectral studies. The purified metabolite showed 70-78% mortality in 2nd instar H. armigera by diet impregnation assay, detached leaf assay and greenhouse assay. The LD50 and LD90 values of the purified metabolite were 627 and 2276 ppm, respectively. Hence, this novel metabolite can be exploited for pest management in future.
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Affiliation(s)
| | - Vijayabharathi Rajendran
- a International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) , Patancheru , India
| | - Sathya Arumugam
- a International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) , Patancheru , India
| | - Hari C Sharma
- a International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) , Patancheru , India
| | - Srinivas Vadlamudi
- a International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) , Patancheru , India
| | - Ratna Kumari Bhimineni
- a International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) , Patancheru , India
| | - Susana V Gonzalez
- b Department of Chemistry , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway
| | - Torunn M Melø
- c Department of Biotechnology , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway
| | - Nebojsa Simic
- b Department of Chemistry , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway
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ABRAHAM SILVA, BASUKRIADI ADI, PAWIROHARSONO SUYANTO, SJAMSURIDZAL WELLYZAR. Insecticidal Activities of Ethyl Acetate Extract of Indonesian Mangrove Fungus Emericella nidulans BPPTCC 6038 on Spodoptera litura. MICROBIOLOGY INDONESIA 2015. [DOI: 10.5454/mi.9.3.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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31
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Abraham S, Basukriadi A, Pawiroharsono S, Sjamsuridzal W. Insecticidal Activity of Ethyl Acetate Extracts from Culture Filtrates of Mangrove Fungal Endophytes. MYCOBIOLOGY 2015; 43:137-49. [PMID: 26190921 PMCID: PMC4505002 DOI: 10.5941/myco.2015.43.2.137] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 03/17/2015] [Accepted: 04/08/2015] [Indexed: 06/04/2023]
Abstract
In the search for novel potent fungi-derived bioactive compounds for bioinsecticide applications, crude ethyl acetate culture filtrate extracts from 110 mangrove fungal endophytes were screened for their toxicity. Toxicity tests of all extracts against brine shrimp (Artemia salina) larvae were performed. The extracts with the highest toxicity were further examined for insecticidal activity against Spodoptera litura larvae and acetylcholinesterase (AChE) inhibition activity. The results showed that the extracts of five isolates exhibited the highest toxicity to brine shrimp at 50% lethal concentration (LC50) values of 7.45 to 10.24 ppm. These five fungal isolates that obtained from Rhizophora mucronata were identified based on sequence data analysis of the internal transcribed spacer region of rDNA as Aspergillus oryzae (strain BPPTCC 6036), Emericella nidulans (strains BPPTCC 6035 and BPPTCC 6038), A. tamarii (strain BPPTCC 6037), and A. versicolor (strain BPPTCC 6039). The mean percentage of S. litura larval mortality following topical application of the five extracts ranged from 16.7% to 43.3%. In the AChE inhibition assay, the inhibition rates of the five extracts ranged from 40.7% to 48.9%, while eserine (positive control) had an inhibition rate of 96.8%, at a concentration of 100 ppm. The extracts used were crude extracts, so their potential as sources of AChE inhibition compounds makes them likely candidates as neurotoxins. The high-performance liquid chromatography profiles of the five extracts differed, indicating variations in their chemical constituents. This study highlights the potential of culture filtrate ethyl acetate extracts of mangrove fungal endophytes as a source of new potential bioactive compounds for bioinsecticide applications.
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Affiliation(s)
- Silva Abraham
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
| | - Adi Basukriadi
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
| | - Suyanto Pawiroharsono
- Center for Bioindustrial Technology, Badan Pengkajian dan Penerapan Teknologi, Jakarta 32344, Indonesia
| | - Wellyzar Sjamsuridzal
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
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Rejiniemon TS, Arasu MV, Duraipandiyan V, Ponmurugan K, Al-Dhabi NA, Arokiyaraj S, Agastian P, Choi KC. In-vitro antimicrobial, antibiofilm, cytotoxic, antifeedant and larvicidal properties of novel quinone isolated from Aegle marmelos (Linn.) Correa. Ann Clin Microbiol Antimicrob 2014; 13:48. [PMID: 25359605 PMCID: PMC4216832 DOI: 10.1186/s12941-014-0048-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 10/07/2014] [Indexed: 11/10/2022] Open
Abstract
Background Plant metabolites have wide applications and have the potential to cure different diseases caused by microorganisms. The aim of the study was to evaluate the antimicrobial, antibiofilm, cytotoxic, antifeedant and larvicidal properties of novel quinine isolated from Aegle marmelos (Linn.) Correa. Methods A compound was obtained by eluting the crude extract, using varying concentrations of the solvents by the chromatographic purification. Broth micro dilution method was used to assess the antimicrobial activity and anticancer study was evaluated using MTT assay. Larvicidal activity was studied using leaf disc no-choice method. Results Based on the IR, 13C NMR and 1H NMR spectral data, the compounds were identified as quinone related antibiotic. It exhibited significant activity against Gram positive and Gram negative bacteria. The lowest Minimum Inhibitory Concentration (MIC) of the compound against Bacillus subtilis and Staphylococcus aureus was 100 and 75 μg mL−1 respectively. Against Escherichia coli and Pseudomonas aeruginosa it exhibited MIC value of 25 μg mL−1. The MIC of the compound against Aspergillus niger, A. clavatus, Penicillium roqueforti was 20 μg mL−1 and that against Fusarium oxysporum (20 μg mL−1), A. oryzae (40 μg mL−1), and Candida albicans (60 μg mL−1), respectively. It showed effective antibiofilm activity against E. coli, S. typhii and P. aeroginosa at 8 μg mL−1 and did not exhibit considerable cytotoxic activity against Vero and HEP2 cell lines. Additionally, the compound documented significant antifeedant and larvicidal activities against Helicoverpa armigera and Spodoptera litura at 125, 250, 500 and 1000 ppm concentrations. Conclusion The results concluded that the compound can be evaluated further in industrial applications and also an agent to prepare botanical new pesticide formulations.
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Kaur T, Vasudev A, Sohal SK, Manhas RK. Insecticidal and growth inhibitory potential of Streptomyces hydrogenans DH16 on major pest of India, Spodoptera litura (Fab.) (Lepidoptera: Noctuidae). BMC Microbiol 2014; 14:227. [PMID: 25163674 PMCID: PMC4154520 DOI: 10.1186/s12866-014-0227-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 08/19/2014] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Destructive impacts of insecticides on non targeted populations necessitate the development of an eco friendly pest control method. Streptomyces spp. are rich source of bioactive secondary metabolites which may provide valuable alternatives to chemical insect-control agents as they can be less toxic and readily biodegradable. Because of its potent biocontrol attributes, ethyl acetate extract of Streptomyces hydrogenans DH16, a soil isolate, was tested to assess its anti-insect potential against polyphagous noctuid, Spodoptera litura. RESULTS The secondary metabolites in the ethyl acetate extract of S. hydrogenans DH16 exhibited larvicidal and growth inhibitory activities. The results indicated that highest concentration of 1600 μg/ml was significantly effective as 70% larval, 66.66% prepupal and 100% pupal mortality was noticed. The metabolites also prolonged the larval developmental period. The LC50 and LC90 values were 1337.384 and 2070.516 μg/ml, respectively for the insect. Negative effects of S. hydrogenans were also observed on development of the insect. Significant decline in adult emergence, adult longevity, fecundity and % hatching was recorded at higher concentrations along with morphological abnormalities as compared to control. Significant decrease in relative growth and consumption rate, efficiency of ingested and digested food and increase in approximate digestibility in larvae reared on diet supplemented with ethyl acetate extract accounts for the toxic as well as anti-nutritive nature of extract. CONCLUSION Secondary metabolites in the fermentation broth from S. hydrogenans were toxic to the larvae at higher concentrations whereas lower concentrations significantly reduced the reproductive potential of S. litura. Therefore, these metabolites show considerable potential for incorporation in pest management programmes as new biopesticidal formulation.
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Affiliation(s)
| | | | | | - Rajesh Kumari Manhas
- Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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