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Mulatier M, Duchaudé Y, Lanoir R, Thesnor V, Sylvestre M, Cebrián-Torrejón G, Vega-Rúa A. Invasive brown algae (Sargassum spp.) as a potential source of biocontrol against Aedes aegypti. Sci Rep 2024; 14:21161. [PMID: 39256502 PMCID: PMC11387777 DOI: 10.1038/s41598-024-72243-z] [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: 04/26/2024] [Accepted: 09/05/2024] [Indexed: 09/12/2024] Open
Abstract
Influxes of sargassos are responsible for economic and environmental disasters in areas where they bloom, especially in regions whose main income relies on tourism and with limited capacity for sanitation and public health response. A promising way of valorization would be to convert this incredible biomass into tools to fight the deadly vector mosquito Aedes aegypti. In the present study, we generated hydrolates and aqueous extracts from three main Sargassum morphotypes identified in Guadeloupe (French West Indies): Sargassum natans VIII, Sargassum natans I and Sargassum fluitans. We conducted a chemical characterization and a holistic evaluation of their potential to induce toxic and behavioral effects in Ae. aegypti. Despite the low insecticidal potential observed for all the extracts, we found that S. natans VIII and S. fluitans hydrolates deterred oviposition, induced contact irritancy and stimulated blood feeding behavior in host seeking Ae. aegypti females, while aqueous extracts from S. natans I and S. fluitans deterred both blood feeding behavior and oviposition. Chemical characterization evidenced the presence of phenylpropanoid, polyphenols, amino acids and esters. Thus, Sargassum spp. aqueous extracts and hydrolates could be used to manipulate Ae. aegypti behavior and be valorized as control tools against this mosquito.
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Affiliation(s)
- Margaux Mulatier
- Institut Pasteur de Guadeloupe, Vector-Borne Diseases Laboratory, Environment and Health Research Department, Lieu-Dit Morne Jolivière, 97139, Les Abymes, Guadeloupe, France.
| | - Yolène Duchaudé
- Institut Pasteur de Guadeloupe, Vector-Borne Diseases Laboratory, Environment and Health Research Department, Lieu-Dit Morne Jolivière, 97139, Les Abymes, Guadeloupe, France
- COVACHIM-M2E EA 3592 Laboratory, Université des Antilles, CEDEX, 97157, Pointe-À-Pitre, Guadeloupe, France
| | - Reggie Lanoir
- Institut Pasteur de Guadeloupe, Vector-Borne Diseases Laboratory, Environment and Health Research Department, Lieu-Dit Morne Jolivière, 97139, Les Abymes, Guadeloupe, France
| | - Valendy Thesnor
- COVACHIM-M2E EA 3592 Laboratory, Université des Antilles, CEDEX, 97157, Pointe-À-Pitre, Guadeloupe, France
| | - Muriel Sylvestre
- COVACHIM-M2E EA 3592 Laboratory, Université des Antilles, CEDEX, 97157, Pointe-À-Pitre, Guadeloupe, France
| | - Gerardo Cebrián-Torrejón
- COVACHIM-M2E EA 3592 Laboratory, Université des Antilles, CEDEX, 97157, Pointe-À-Pitre, Guadeloupe, France
| | - Anubis Vega-Rúa
- Institut Pasteur de Guadeloupe, Vector-Borne Diseases Laboratory, Environment and Health Research Department, Lieu-Dit Morne Jolivière, 97139, Les Abymes, Guadeloupe, France.
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Application of food-grade natural antimicrobials for the control of crop disease caused by phytopathogens. Food Sci Biotechnol 2022; 31:275-284. [PMID: 35273818 PMCID: PMC8885948 DOI: 10.1007/s10068-022-01030-1] [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: 11/26/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 02/02/2023] Open
Abstract
Phytopathogens can cause crop disease in agriculture, thus, synthetic pesticides are used to prevent disease. However, this type of pesticide has an adverse effect on human and environmental health. Consequently, it is important to develop natural pesticides for crop protection. The final goal of crop protection is enhancing the quality of fresh products for consumers, suggesting that crop safety is related with food safety. Several studies have investigated the effect of food-grade natural antimicrobials on phytopathogens in vitro and ex vivo. The objective of this review is to provide an overview of bactericidal effects when using natural antimicrobial compounds, including essential oils, plant extracts, and carboxylic acids, and their mechanisms of antibacterial action. However, more studies are needed to investigate the efficacy of natural antimicrobial compounds on phytopathogens in field conditions.
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Pesticidal Activity of Sundarban Mangrove Plant Extracts against Sitophilus Pests and Identification of Active Constituents Using LC-MS. Adv Pharmacol Pharm Sci 2021; 2021:1540336. [PMID: 34957401 PMCID: PMC8695028 DOI: 10.1155/2021/1540336] [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: 07/05/2021] [Revised: 11/02/2021] [Accepted: 11/23/2021] [Indexed: 01/30/2023] Open
Abstract
Plants act as a rich source of novel natural pesticides. In the backdrop of the recent revival of interest in developing plant-based insecticides, this study was carried out to investigate the pesticidal activity of Sundarban mangrove plants. A total of nine different plant parts from five plants, namely, Aegiceras corniculatum, Excoecaria agallocha, Heritiera fomes, Xylocarpus moluccensis, and Xylocarpus granatum, were extracted with methanol and tested for insecticidal activity against two common stored product pests Sitophilus oryzae and Sitophilus zeamais using direct contact feeding deterrent wafer disc method. Three bark extracts from A. corniculatum, E. agallocha, and H. fomes showed potent and statistically significant insecticidal activity against both S. oryzae and S. zeamais pests (80–100% mortality). All the active bark extracts were further fractionated using C-18 solid-phase extraction (SPE) columns and tested for their insecticidal activity against S. oryzae pest to identify the active fraction. Only the SPE4 fraction (100% MeOH) from all the three active plants showed the activity against S. oryzae pest with a lethal concentration 50% (LC50) value of 0.5, 1.0, and 1.5 mg/disc for A. corniculatum, E. agallocha, and H. fomes, respectively. The active fraction of A. corniculatum was further profiled for identification of active compounds using LC-ESI-MS and identified (along with some unknown peaks) two previously reported compounds at m/z 625.17630 (isorhamnetin 3-O-rutinoside) and 422.25346 (paspaline) as major constituents. Insecticidal activities of these plants are reported in this study for the first time and would be useful in promoting research aiming for the development of new biopesticides from mangrove plants.
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Ratnadass A, Deguine JP. Crop protection practices and viral zoonotic risks within a One Health framework. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 774:145172. [PMID: 33610983 DOI: 10.1016/j.scitotenv.2021.145172] [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: 11/03/2020] [Revised: 01/10/2021] [Accepted: 01/10/2021] [Indexed: 06/12/2023]
Abstract
Recent viral zoonotic epidemics have been attributed partially to the negative impact of human activities on ecosystem biodiversity. Agricultural activities, particularly conventional crop protection (CP) practices, are a major threat to global biodiversity, ecosystem health and human health. Here we review interactions between CP practices and viral zoonoses (VZs), the first time this has been done. It should be noted that a) VZs stand at the interface between human, animal and ecosystem health; b) some VZs involve arthropod vectors that are affected by CP practices; and c) some crop pests, or their natural enemies are vertebrate reservoirs/carriers of certain VZs, and their contact with humans or domestic animals is affected by CP practices. Our review encompasses examples highlighting interactions between VZs and CP practices, both efficiency improvement-based (i.e. conventional with agrochemical insecticides and rodenticides), substitution-based (i.e. mainly with physical/mechanical or biopesticidal pest control), and redesign-based (i.e. mainly with conservation biological pest control, including some forms of crop-livestock integration). These CP practices mainly target arthropod and vertebrate pests. They also target, to a lesser extent, weeds and plant pathogens. Conventional and some physical/mechanical control methods and some forms of biopesticidal and crop-livestock integration practices were found to have mixed outcomes in terms of VZ risk management. Conversely, practices based on biological control by habitat conservation of arthropod or vertebrate natural enemies, falling within the Agroecological Crop Protection (ACP) framework, result in VZ prevention at various scales (local to global, and short-term to long-term). ACP addresses major global challenges including climate resilience, biodiversity conservation and animal welfare, and helps integrate plant health within the extended "One Health" concept.
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Affiliation(s)
- Alain Ratnadass
- CIRAD, UPR HortSys, F-97455 Saint-Pierre, Réunion, France; HortSys, Univ Montpellier, CIRAD, Montpellier, France.
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Geiselman GM, Zhuang X, Kirby J, Tran-Gyamfi MB, Prahl JP, Sundstrom ER, Gao Y, Munoz Munoz N, Nicora CD, Clay DM, Papa G, Burnum-Johnson KE, Magnuson JK, Tanjore D, Skerker JM, Gladden JM. Production of ent-kaurene from lignocellulosic hydrolysate in Rhodosporidium toruloides. Microb Cell Fact 2020; 19:24. [PMID: 32024522 PMCID: PMC7003354 DOI: 10.1186/s12934-020-1293-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 01/23/2020] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Rhodosporidium toruloides has emerged as a promising host for the production of bioproducts from lignocellulose, in part due to its ability to grow on lignocellulosic feedstocks, tolerate growth inhibitors, and co-utilize sugars and lignin-derived monomers. Ent-kaurene derivatives have a diverse range of potential applications from therapeutics to novel resin-based materials. RESULTS The Design, Build, Test, and Learn (DBTL) approach was employed to engineer production of the non-native diterpene ent-kaurene in R. toruloides. Following expression of kaurene synthase (KS) in R. toruloides in the first DBTL cycle, a key limitation appeared to be the availability of the diterpene precursor, geranylgeranyl diphosphate (GGPP). Further DBTL cycles were carried out to select an optimal GGPP synthase and to balance its expression with KS, requiring two of the strongest promoters in R. toruloides, ANT (adenine nucleotide translocase) and TEF1 (translational elongation factor 1) to drive expression of the KS from Gibberella fujikuroi and a mutant version of an FPP synthase from Gallus gallus that produces GGPP. Scale-up of cultivation in a 2 L bioreactor using a corn stover hydrolysate resulted in an ent-kaurene titer of 1.4 g/L. CONCLUSION This study builds upon previous work demonstrating the potential of R. toruloides as a robust and versatile host for the production of both mono- and sesquiterpenes, and is the first demonstration of the production of a non-native diterpene in this organism.
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Affiliation(s)
- Gina M Geiselman
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Xun Zhuang
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - James Kirby
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Mary B Tran-Gyamfi
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Jan-Philip Prahl
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA.,Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Eric R Sundstrom
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA.,Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Yuqian Gao
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Nathalie Munoz Munoz
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Carrie D Nicora
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Derek M Clay
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA
| | - Gabriella Papa
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA.,Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Kristin E Burnum-Johnson
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jon K Magnuson
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Deepti Tanjore
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA.,Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | | | - John M Gladden
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA. .,Department of Biomass Science and Conversion Technology, Sandia National Laboratories, 7011 East Ave, Livermore, CA, 94550, USA.
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Gomes TG, Hadi SIIA, Costa Alves GS, Mendonça S, De Siqueira FG, Miller RNG. Current Strategies for the Detoxification of Jatropha curcas Seed Cake: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:2510-2522. [PMID: 29498277 DOI: 10.1021/acs.jafc.7b05691] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Jatropha curcas is an important oilseed plant, with considerable potential in the development of biodiesel. Although Jatropha seed cake, the byproduct of oil extraction, is a residue rich in nitrogen, phosphorus, potassium, and carbon, with high protein content suitable for application in animal feed, the presence of toxic phorbol esters limits its application in feed supplements and fertilizers. This review summarizes the current methods available for detoxification of this residue, based upon chemical, physical, biological, or combined processes. The advantages and disadvantages of each process are discussed, and future directions involving genomic and proteomic approaches for advancing our understanding of biodegradation processes involving microorganisms are highlighted.
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Affiliation(s)
- Taisa G Gomes
- Instituto de Ciências Biológicas, Departamento de Biologia Celular , Universidade de Brasília , Campus Universitário Darcy Ribeiro, Asa Norte , 70910-900 , Brasília , DF , Brazil
| | - Sámed I I A Hadi
- Universidade Federal de Minas Gerais , Instituto de Ciências Biológicas - ICB , Av. Pres. Antônio Carlos, 6627 , 31270-010 , Belo Horizonte , MG , Brazil
| | - Gabriel S Costa Alves
- Instituto de Ciências Biológicas, Departamento de Biologia Celular , Universidade de Brasília , Campus Universitário Darcy Ribeiro, Asa Norte , 70910-900 , Brasília , DF , Brazil
| | - Simone Mendonça
- Embrapa Agroenergia, STN-70297-400 , 70297-400 , Brasília , DF , Brazil
| | | | - Robert N G Miller
- Instituto de Ciências Biológicas, Departamento de Biologia Celular , Universidade de Brasília , Campus Universitário Darcy Ribeiro, Asa Norte , 70910-900 , Brasília , DF , Brazil
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Kalagatur NK, Karthick K, Allen JA, Nirmal Ghosh OS, Chandranayaka S, Gupta VK, Krishna K, Mudili V. Application of Activated Carbon Derived from Seed Shells of Jatropha curcas for Decontamination of Zearalenone Mycotoxin. Front Pharmacol 2017; 8:760. [PMID: 29114225 PMCID: PMC5660729 DOI: 10.3389/fphar.2017.00760] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 10/09/2017] [Indexed: 01/26/2023] Open
Abstract
In the present study, activated carbon (AC) was derived from seed shells of Jatropha curcas and applied to decontaminate the zearalenone (ZEA) mycotoxin. The AC of J. curcas (ACJC) was prepared by ZnCl2 chemical activation method and its crystalline structure was determined by X-ray diffraction analysis. The crystalline graphitic nature of ACJC was confirmed from the Raman spectroscopy. Scanning electron microscope showed the porous surface morphology of the ACJC surface with high pore density and presence of elemental carbon was identified from the energy dispersive X-ray analysis. From Brunauer–Emmett–Teller (BET) analysis, SBET, micropore area, and average pore diameter of ACJC were calculated as 822.78 (m2/g), 255.36 (m2/g), and 8.5980 (Å), respectively. The adsorption of ZEA by ACJC was accomplished with varying contact time, concentration of ZEA and ACJC, and pH of media. The ACJC has adsorbed the ZEA over a short period of time and adsorption of ZEA was dependent on the dose of ACJC. The effect of different pH on adsorption of ZEA by ACJC was not much effective. Desorption studies confirmed that adsorption of ZEA by ACJC was stable. The adsorption isotherm of ZEA by ACJC was well fitted with Langmuir model rather than Freundlich and concluded the homogeneous process of sorption. The maximum adsorption of ZEA by ACJC was detected as 23.14 μg/mg. Finally, adsorption property of ACJC was utilized to establish ACJC as an antidote against ZEA-induced toxicity under in vitro in neuro-2a cells. The percentage of live cells was high in cells treated together with a combination of ZEA and ACJC compared to ZEA treated cells. In a similar way, ΔΨM was not dropped in cells exposed to combination of ACJC and ZEA compared to ZEA treated cells. Furthermore, cells treated with a combination of ZEA and ACJC exhibited lower level of intracellular reactive oxygen species and caspase-3 compared to ZEA treated cells. These in vitro studies concluded that ACJC has successfully protected the cells from ZEA-induced toxicity by lowering the availability of ZEA in media as a result of adsorption of ZEA. The study concluded that ACJC was a potent decontaminating agent for ZEA and could be used as an antidote against ZEA-induced toxicity.
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Affiliation(s)
- Naveen K Kalagatur
- Division of Microbiology, Defence Food Research Laboratory, Mysore, India
| | - Kumarvel Karthick
- Department of Civil Engineering, Bannari Amman Institute of Technology, Sathyamangalam, India
| | - Joseph A Allen
- Center for Life Sciences, Defence Research and Development Organisation - Bharathiar University, Coimbatore, India
| | | | | | - Vijai K Gupta
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Kadirvelu Krishna
- Center for Life Sciences, Defence Research and Development Organisation - Bharathiar University, Coimbatore, India
| | - Venkataramana Mudili
- Center for Life Sciences, Defence Research and Development Organisation - Bharathiar University, Coimbatore, India
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Vegetable Oil-Biorefinery. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2017; 166:69-98. [DOI: 10.1007/10_2016_65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ranjarisoa LN, Razanamihaja N, Rafatro H. Use of plants in oral health care by the population of Mahajanga, Madagascar. JOURNAL OF ETHNOPHARMACOLOGY 2016; 193:179-194. [PMID: 27496581 DOI: 10.1016/j.jep.2016.07.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 07/25/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND The use of medicinal plants to address oral health problems is not well documented in Madagascar, yet the country is full of endemic flora. The aim of this study was to collect information on the use of plants in the region of Mahajanga, Madagascar, for the treatments of oral diseases mainly tooth decay. METHODS The ethnobotanical survey with respect to the use of plants for curing dental problems was carried out in 2012. A cluster sampling at three levels was applied when choosing the study sites. The target population was made up of heads of household. The following data were collected from a semi-structured questionnaire: name of plants, part used, mode of preparation, and administration. The Informant Consensus Factor and Fidelity Level indexes were calculated for each condition treated and used plants. The Results revealed that 93 per cent of the targeted population has used plants to calm dental pain, whereas 44.2% have reported using plants due to financial problems. About 65 species of plants are commonly used for oral health care and 63 of them treated caries. Cajanus cajan (L.) Millsp. was the most plant used. It was mostly used in crushed form of 5 to 9 leaves which were prepared and placed directly on the affected oral part or in the tooth cavity. In general, the treatment lasted about 5 days or minus. The ICF were 0.83 for caries and 0.81 for periodontal diseases. CONCLUSION This ethnobotanical survey will serve as database for further phytochemical and pharmacological study of plants in order to identify their active components and advise the population on the most effective administration.
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Affiliation(s)
- Lala Nirina Ranjarisoa
- Institut d'Odonto-Stomatologie Tropicale de Madagascar, Université de Mahajanga (Institute of Tropical Odontostomatology of Madagascar University of Mahajanga), PO Box 652, Madagascar.
| | - Noëline Razanamihaja
- École Doctorale de Nutrition et de l'Environnement (Postgraduate Department of Nutrition and Environment), Université de Mahajanga, Madagascar
| | - Herintsoa Rafatro
- Laboratoire d'Évaluation Pharmaco-Clinique de l'Institut Malgache des Recherches Appliquées-Fondation Albert et Suzanne RAKOTO-RATSIMAMANGA (Pharmaco-Clinical Assessment Laboratory of the Malagasy Institute of Applied Research-Albert and Suzanne RAKOTO-RATSIMAMANGA Foundation), Antananarivo, Madagascar
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Ecology of the African Maize Stalk Borer, Busseola fusca (Lepidoptera: Noctuidae) with Special Reference to Insect-Plant Interactions. INSECTS 2014; 5:539-63. [PMID: 26462824 PMCID: PMC4592576 DOI: 10.3390/insects5030539] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/05/2014] [Accepted: 06/20/2014] [Indexed: 11/17/2022]
Abstract
Busseola fusca (Lepidoptera: Noctuidae) is an important pest of maize and sorghum in sub-Saharan Africa. One century after its first description by Fuller in 1901, inaccurate information based on earlier reports are still propagated on its distribution (e.g., absent from the lower altitudes in East Africa) and host plant range (e.g., feeding on a large range of wild grass species). This review provides updated information on the biology, distribution and genetics of B. fusca with emphasis on insect-plant interactions. Related to this, new avenues of stem borer management are proposed.
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Hallare AV, Ruiz PLS, Cariño JCED. Assessment of Jatropha curcas L. biodiesel seed cake toxicity using the zebrafish (Danio rerio) embryo toxicity (ZFET) test. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:6044-6056. [PMID: 24464135 DOI: 10.1007/s11356-014-2539-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
Consequent to the growing demand for alternative sources of energy, the seeds from Jatropha curcas remain to be the favorite for biodiesel production. However, a significant volume of the residual organic mass (seed cake) is produced during the extraction process, which raises concerns on safe waste disposal. In the present study, we assessed the toxicity of J. curcas seed cake using the zebrafish (Danio rerio) embryotoxicity test. Within 1-h post-fertilization (hpf), the fertilized eggs were exposed to five mass concentrations of J. curcas seed cake and were followed through 24, 48, and 72 hpf. Toxicity was evaluated based on lethal endpoints induced on zebrafish embryos namely egg coagulation, non-formation of somites, and non-detachment of tail. The lowest concentration tested, 1 g/L, was not able to elicit toxicity on embryos whereas 100 % mortality (based also on lethal endpoints) was recorded at the highest concentration at 2.15 g/L. The computed LC50 for the J. curcas seed cake was 1.61 g/L. No further increase in mortality was observed in the succeeding time points (48 and 72 hpf) indicating that J. curcas seed cake exerted acute toxicity on zebrafish embryos. Sublethal endpoints (yolk sac and pericardial edema) were noted at 72 hpf in zebrafish embryos exposed to higher concentrations. The observed lethal endpoints induced on zebrafish embryos were discussed in relation to the active principles, notably, phorbol esters that have remained in the seed cake even after extraction.
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Affiliation(s)
- Arnold V Hallare
- Department of Biology, CAS, University of the Philippines, Manila, Padre Faura St., Manila, 1000, Philippines,
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Ashraf MA, Ullah S, Ahmad I, Qureshi AK, Balkhair KS, Abdur Rehman M. Green biocides, a promising technology: current and future applications to industry and industrial processes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:388-403. [PMID: 23983055 DOI: 10.1002/jsfa.6371] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 07/27/2013] [Accepted: 08/23/2013] [Indexed: 06/02/2023]
Abstract
The study of biofilms has skyrocketed in recent years due to increased awareness of the pervasiveness and impact of biofilms. It costs the USA literally billions of dollars every year in energy losses, equipment damage, product contamination and medical infections. But biofilms also offer huge potential for cleaning up hazardous waste sites, filtering municipal and industrial water and wastewater, and forming biobarriers to protect soil and groundwater from contamination. The complexity of biofilm activity and behavior requires research contributions from many disciplines such as biochemistry, engineering, mathematics and microbiology. The aim of this review is to provide a comprehensive analysis of emerging novel antimicrobial techniques, including those using myriad organic and inorganic products as well as genetic engineering techniques, the use of coordination complex molecules, composite materials and antimicrobial peptides and the use of lasers as such or their modified use in combination treatments. This review also addresses advanced and recent modifications, including methodological changes, and biocide efficacy enhancing strategies. This review will provide future planners of biofilm control technologies with a broad understanding and perspective on the use of biocides in the field of green developments for a sustainable future.
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Affiliation(s)
- Muhammad Aqeel Ashraf
- Department of Civil Engineering, Tokyo Institute of Technology, Tokyo, 152-8550, Japan; Department of Geology, University of Malaya, Kuala Lumpur, 50603, Malaysia; Department of Chemistry, University of Malaya, Kuala Lumpur, 50603, Malaysia
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