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Pulido-Blanco VC, Pinzón-Sandoval EH, González-Chavarro CF, Serrano-Cely PA. Management alternatives for Carmenta theobromae (Busck, 1910) (Lepidoptera: Sesiidae) and Simplicivalva ampliophilobia (Lepidoptera: Cossidae), limiting pests of guava in Colombia. Sci Rep 2021; 11:3076. [PMID: 33542249 PMCID: PMC7862407 DOI: 10.1038/s41598-021-81830-3] [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: 07/29/2020] [Accepted: 01/11/2021] [Indexed: 11/09/2022] Open
Abstract
The larval stages of Carmenta theobromae Busck (1910) and Simplicivalva ampliophilobia Davis, Gentili-Poole and Mitter (2008) attack the subcortical zone and pith in guava trees, respectively, in the first productive nucleus of fruit trees in Colombia: Hoya del Río Suárez (HRS). The presence of pest insects has been reported in 98% of the farms sampled in HRS (n = 124), with up to 96 and 11 simultaneous larvae per tree, respectively. Although the aspects of the basic biology and life cycle of both pests have been resolved, there are no strategies for managing populations in the field. Therefore, the aim of this study was to evaluate different management alternatives under laboratory and field conditions in HRS. In laboratory conditions, a completely randomized design was used in two separate experiments, each with six treatments: T1: Spinosad (a mixture of Spinosad A and D); T2: S-1,2-di(ethoxycarbonyl) ethyl 0,0-dimethylphosphorodithioate (chemical control); T3: Lecanicillium lecanii; T4: Beauveria bassiana; T5: Mix of B. bassiana and B. brongniartii, and T6: distilled water (control). The number of dead larvae per replicate per treatment was evaluated (DL), with experimental units of five and three larvae, respectively. In the field, to the two best alternatives found for each pest in the laboratory, pruning and keeping the area around the plants free of weeds were added as cultural management, in two separate additional experiments, each with three larvae as experimental unit per treatment. For C. theobromae, the best laboratory alternatives were chemical control (DL: 3.78) and L. lecanii (DL: 2.33), followed without statistical differences by B. bassiana (DL: 1.67). In the field, the virulence of B. bassiana improved (DL: 3), and together with pruning and keeping the area around the plants clear of weeds (DL: 3), they stood out as the best alternatives. For S. ampliophilobia under laboratory conditions, the best alternatives were Spinosad (2.74) and chemical control (DL: 2.66), without significant difference. In the field, there were no statistical differences between the alternatives, except for the control. This statistical parity of cultural practices, and biological and chemical management is an argument in favor of the use of the former to the detriment of the third, especially when the harmful effects of the molecule S-1,2 di (ethoxycarbonyl) ethyl 0, 0-dimethyl phosphorodithioate have been proven in air, water and agricultural soils, in addition to its association with thyroid cancer in humans. This is a strong argument to favor the use of synergies of cultural and biological management methods framed in IPM, as opposed to the use of chemical agents whose harmful effects are strongly documented, and whose use is becoming increasingly prohibited.
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Affiliation(s)
- Víctor Camilo Pulido-Blanco
- Centro de Investigación Tibaitatá Sede Tunja, MSc. Ciencias Biológicas, Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Kilometro 14 vía Mosquera, Cundinamarca, Colombia. .,, Calle 19 N° 9-35 Edificio de la Lotería de Boyacá, oficina 902, Tunja, Boyacá, Colombia.
| | | | - Carlos Felipe González-Chavarro
- Centro de Investigación La Libertad, MSc. Fisiología Vegetal, Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Kilometro 17 vía Puerto López, Meta, Colombia
| | - Pablo Antonio Serrano-Cely
- Facultad de Ciencias Agropecuarias, MSc Ciencias Ambientales, Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia
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Silva LAD, Ardisson-Araújo DMP, de Camargo BR, de Souza ML, Ribeiro BM. A novel cypovirus found in a betabaculovirus co-infection context contains a poxvirus immune nuclease (poxin)-related gene. J Gen Virol 2020; 101:667-675. [PMID: 32375954 DOI: 10.1099/jgv.0.001413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The cassava hornworm Erinnyis ello ello (Lepidoptera: Sphingidae) is an important pest in Brazil. This insect feeds on host plants of several species, especially Manihot esculenta (cassava) and Hevia brasiliensis (rubber tree). Cassava hornworm outbreaks are quite common in Brazil and can cause great impact over crop production. Granulare and polyhedral-shaped occlusion bodies (OBs) were observed in extracts of dead E. ello larvae from rubber-tree plantations by light and scanning electron microscopy (SEM), suggesting a mixed infection. The polyhedral-shaped OB surface revealed indentations that resemble those found in cypovirus polyhedra. After OB nucleic acid extraction followed by cDNA production and Illumina deep-sequencing analysis, the results confirmed for the presence of a putative novel cypovirus that carries ten segments and also a betabaculovirus (Erinnyis ello granulovirus, ErelGV). Phylogenetic analysis of the predicted segment 1-enconded RdRP showed that the new cypovirus isolate is closely related to a member of species Cypovirus 2, which was isolated from Inachis io (Lepidoptera: Nymphalidae). Therefore, we named this new isolate Erinnyis ello cypovirus 2 (ErelCPV-2). Genome in silico analyses showed that ErelCPV-2 segment 8 (S8) has a predicted amino acid identity of 35.82 % to a hypothetical protein of betabaculoviruses. This putative protein has a cGAMP-specific nuclease domain related to the poxvirus immune nucleases (poxins) from the 2',3'-cGAMP-degrading enzyme family.
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Affiliation(s)
- Leonardo A da Silva
- Cell Biology Department, Laboratory of Baculovirus, University of Brasília, 70910-900, Brasília, DF, Brazil
| | - Daniel M P Ardisson-Araújo
- Biochemistry and Molecular Biology Department, Laboratory of Insect Viruses, University of Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Brenda R de Camargo
- Enzymology Laboratory, Department of Cellular Biology, University of Brasília, Brasilia, DF, Brazil
| | - Marlinda Lobo de Souza
- Embrapa Genetic Resources and Biotechnology, Biological Station Park, 70770-917 Brasília, DF, Brazil
| | - Bergmann M Ribeiro
- Cell Biology Department, Laboratory of Baculovirus, University of Brasília, 70910-900, Brasília, DF, Brazil
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Sosa-Gómez DR, Morgado FS, Corrêa RFT, Silva LA, Ardisson-Araújo DMP, Rodrigues BMP, Oliveira EE, Aguiar RWS, Ribeiro BM. Entomopathogenic Viruses in the Neotropics: Current Status and Recently Discovered Species. NEOTROPICAL ENTOMOLOGY 2020; 49:315-331. [PMID: 32358711 DOI: 10.1007/s13744-020-00770-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
The market for biological control of insect pests in the world and in Brazil has grown in recent years due to the unwanted ecological and human health impacts of chemical insecticides. Therefore, research on biological control agents for pest management has also increased. For instance, insect viruses have been used to protect crops and forests around the world for decades. Among insect viruses, the baculoviruses are the most studied and used viral biocontrol agent. More than 700 species of insects have been found to be naturally infected by baculoviruses, with 90% isolated from lepidopteran insects. In this review, some basic aspects of baculovirus infection in vivo and in vitro infection, gene content, viral replication will be discussed. Furthermore, we provide examples of the use of insect viruses for biological pest control and recently characterized baculoviruses in Brazil.
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Affiliation(s)
- D R Sosa-Gómez
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Soja, Londrina, PR, Brasil
| | - F S Morgado
- Depto de Biologia Celular, Univ of Brasília, Brasília, DF, Brasil
| | - R F T Corrêa
- Depto de Biotecnologia, Univ Federal de Tocantins, Gurupi, TO, Brasil
| | - L A Silva
- Depto de Biologia Celular, Univ of Brasília, Brasília, DF, Brasil
| | - D M P Ardisson-Araújo
- Depto de Bioquímica e Biologia Molecular, Univ Federal de Santa Maria, Santa Maria, RS, Brasil
| | - B M P Rodrigues
- Depto de Biologia Celular, Univ of Brasília, Brasília, DF, Brasil
| | - E E Oliveira
- Depto de Entomologia, Univ Federal de Viçosa, Viçosa, MG, Brasil
| | - R W S Aguiar
- Depto de Biotecnologia, Univ Federal de Tocantins, Gurupi, TO, Brasil
| | - B M Ribeiro
- Depto de Biologia Celular, Univ of Brasília, Brasília, DF, Brasil.
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Scognamiglio M, Graziani V, Tsafantakis N, Esposito A, Fiorentino A, D'Abrosca B. NMR-based metabolomics and bioassays to study phytotoxic extracts and putative phytotoxins from Mediterranean plant species. PHYTOCHEMICAL ANALYSIS : PCA 2019; 30:512-523. [PMID: 31222865 DOI: 10.1002/pca.2842] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Mediterranean plants are characterised by a high content of bioactive secondary metabolites that play important roles in plant-plant interactions as plant growth regulators and could be useful for the development of new eco-friendly herbicides. OBJECTIVE An NMR-based metabolomics approach was reported to seek selective phytotoxic plant extracts and putative plant-derived active molecules. METHODS Plant extracts derived from five Mediterranean donor species (Pistacia lentiscus, Bellis sylvestris, Phleum subulatum, Petrohrhagia saxifraga and Melilotus neapolitana) were used to treat the hydroponic cultures of three receiving plants (Triticum durum, Triticum ovatum and Avena fatua). Morphological analyses of the treated receiving plants were carried out. NMR-based metabolomics was applied both to characterise the donor plant extracts and to study the effects of the treatments on the receiving plants. RESULTS This study allowed the identification of Melilotus neapolitana and Bellis sylvestris as phytotoxic plant and good candidates for further studies. Specifically, the NMR-based metabolomics investigation showed that these species affect a specific set of metabolites (such as sugars, amino and organic acids) and therefore metabolic pathways [i.e. tricarboxylic acid (TCA) cycle, amino acid metabolism, etc.] that are crucial for the plant growth and development. Moreover, it was possible to identify the metabolite(s) probably responsible for the phytotoxicity of the active extracts. CONCLUSION The NMR-based metabolomics approach employed in this study led to the identification of two phytotoxic plant extracts and their putative active principles. These new insights will be of paramount importance in the future to find plant derived molecules endowed with phytotoxic activities.
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Affiliation(s)
- Monica Scognamiglio
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Vittoria Graziani
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Nikolaos Tsafantakis
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Assunta Esposito
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Antonio Fiorentino
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
- Dipartimento di Biotecnologia Marina, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
| | - Brigida D'Abrosca
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche -DiSTABiF, Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
- Dipartimento di Biotecnologia Marina, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
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Cuartas-Otálora PE, Gómez-Valderrama JA, Ramos AE, Barrera-Cubillos GP, Villamizar-Rivero LF. Bio-Insecticidal Potential of Nucleopolyhedrovirus and Granulovirus Mixtures to Control the Fall Armyworm Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae). Viruses 2019; 11:E684. [PMID: 31357428 PMCID: PMC6723348 DOI: 10.3390/v11080684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 01/11/2023] Open
Abstract
The ability of the isolate VG008 of S. frugiperda granulovirus (SpfrGV) to enhance the infectivity of the isolate SfCOL of S. frugiperda multiple nucleopolyhedrovirus (SpfrMNPV) was evaluated on S. frugiperda larvae. Bioassays were performed with mixtures by using different proportions 90%:10% (M1), 95%:5% (M2) and 97.5%:2.5% (M3) of SfCOL:VG008, respectively. All mixtures showed higher insecticidal activity that SfCOL. The mixture M3 showed the highest enhancement of SfCOL reducing 11.40 times the Mean Lethal Concentration and 96 h in the Mean Time to Death. The enhancer activity of proteins derived from VG008 (GVPs) were also evaluated in mixture with SfCOL. The GVPs increased 27% larval mortality caused by SfCOL and damaged the peritrophic membrane of S. litura larvae, suggesting that the key point in this enhancing activity is the initial step of the larva colonization, the midgut infection. M3 was formulated and evaluated under greenhouse conditions in maize plants using different doses. The highest efficacy was obtained with the highest dose of M3 (8 × 1011 OBs/ha), which was similar to that found when formulated SfCOL was applied using an approximately twofold higher dose. The viral mixture M3 was selected as the active ingredient for developing a new biopesticide for a more efficient management of the pest in the field.
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Affiliation(s)
- Paola E Cuartas-Otálora
- Corporación Colombiana de Investigación Agropecuaria-Agrosavia, Centro de Investigación Tibaitatá, kilómetro 14 vía Mosquera-Bogotá, 250047 Cundinamarca, Colombia.
| | - Juliana A Gómez-Valderrama
- Corporación Colombiana de Investigación Agropecuaria-Agrosavia, Centro de Investigación Tibaitatá, kilómetro 14 vía Mosquera-Bogotá, 250047 Cundinamarca, Colombia
| | - Andrea E Ramos
- Corporación Colombiana de Investigación Agropecuaria-Agrosavia, Centro de Investigación Tibaitatá, kilómetro 14 vía Mosquera-Bogotá, 250047 Cundinamarca, Colombia
| | - Gloria P Barrera-Cubillos
- Corporación Colombiana de Investigación Agropecuaria-Agrosavia, Centro de Investigación Tibaitatá, kilómetro 14 vía Mosquera-Bogotá, 250047 Cundinamarca, Colombia
| | - Laura F Villamizar-Rivero
- AgResearch, Forage Science, Lincoln Research Centre, Private Bag 4749, Christchurch 8140, New Zealand
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