Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)

Schistocerca cancellata is a large-sized acridid, which has historically represented the greatest agricultural problem in southern South America, causing serious economic losses. Since 2015 S. cancellata entered in a state of outbreak condition of historical proportions, producing frequent and large...

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Autores principales: Pelizza, Sebastián Alberto, Medina, Héctor Emilio, Ferreri, Natalia Analía, Elíades, Lorena Alejandra, Pocco, Martina Eugenia, Stenglein, Sebastián Alberto, Lange, Carlos Ernesto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Biología
Beauveria bassiana
Entomopatogenic fungi
Enzymatic activity
Locust
Mortality
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87620
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87620
record_format dspace
spelling I19-R120-10915-876202023-04-12T18:59:57Z http://sedici.unlp.edu.ar/handle/10915/87620 issn:1018-3647 Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae) Pelizza, Sebastián Alberto Medina, Héctor Emilio Ferreri, Natalia Analía Elíades, Lorena Alejandra Pocco, Martina Eugenia Stenglein, Sebastián Alberto Lange, Carlos Ernesto 2017 2019-12-18T12:58:44Z en Biología Beauveria bassiana Entomopatogenic fungi Enzymatic activity Locust Mortality Schistocerca cancellata is a large-sized acridid, which has historically represented the greatest agricultural problem in southern South America, causing serious economic losses. Since 2015 S. cancellata entered in a state of outbreak condition of historical proportions, producing frequent and large swarms of up to 25 km2 in the north and central region of Argentina and areas of neigh boring Bolivia and Paraguay. At present, chemical insecticides are still the only means available for the control of S. cancellata. We analyzed under laboratory conditions the effectiveness of three fungal strains of Beauveria bassiana isolated from S. cancellata and also determined the relationship between chitinase, protease, and lipase levels at different temperatures of these fungi and their insecticidal activities. The pathogenicity assays were carried out by the sprayed method with concentrations of 1 × 104, 1 × 106 and 1 × 108 conidia/ml. We observed that isolate LPSc 1227 caused the highest mortality at each dose studied, ranging from 100% at a dose of 1 × 108 conidia/ml to 33.3 ± 3.2% at the lowest dose of 1 × 104 conidia/ml. Moreover, in this isolate the highest values of chitinolytic and proteolytic activity were recorded (2.31 ± 0.31 and 1.78 ± 0.04), respectively. Centro de Estudios Parasitológicos y de Vectores Instituto de Botánica "Dr. Carlos Spegazzini" Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Beauveria bassiana
Entomopatogenic fungi
Enzymatic activity
Locust
Mortality
spellingShingle Biología
Beauveria bassiana
Entomopatogenic fungi
Enzymatic activity
Locust
Mortality
Pelizza, Sebastián Alberto
Medina, Héctor Emilio
Ferreri, Natalia Analía
Elíades, Lorena Alejandra
Pocco, Martina Eugenia
Stenglein, Sebastián Alberto
Lange, Carlos Ernesto
Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
topic_facet Biología
Beauveria bassiana
Entomopatogenic fungi
Enzymatic activity
Locust
Mortality
description Schistocerca cancellata is a large-sized acridid, which has historically represented the greatest agricultural problem in southern South America, causing serious economic losses. Since 2015 S. cancellata entered in a state of outbreak condition of historical proportions, producing frequent and large swarms of up to 25 km2 in the north and central region of Argentina and areas of neigh boring Bolivia and Paraguay. At present, chemical insecticides are still the only means available for the control of S. cancellata. We analyzed under laboratory conditions the effectiveness of three fungal strains of Beauveria bassiana isolated from S. cancellata and also determined the relationship between chitinase, protease, and lipase levels at different temperatures of these fungi and their insecticidal activities. The pathogenicity assays were carried out by the sprayed method with concentrations of 1 × 104, 1 × 106 and 1 × 108 conidia/ml. We observed that isolate LPSc 1227 caused the highest mortality at each dose studied, ranging from 100% at a dose of 1 × 108 conidia/ml to 33.3 ± 3.2% at the lowest dose of 1 × 104 conidia/ml. Moreover, in this isolate the highest values of chitinolytic and proteolytic activity were recorded (2.31 ± 0.31 and 1.78 ± 0.04), respectively.
format Articulo
Articulo
author Pelizza, Sebastián Alberto
Medina, Héctor Emilio
Ferreri, Natalia Analía
Elíades, Lorena Alejandra
Pocco, Martina Eugenia
Stenglein, Sebastián Alberto
Lange, Carlos Ernesto
author_facet Pelizza, Sebastián Alberto
Medina, Héctor Emilio
Ferreri, Natalia Analía
Elíades, Lorena Alejandra
Pocco, Martina Eugenia
Stenglein, Sebastián Alberto
Lange, Carlos Ernesto
author_sort Pelizza, Sebastián Alberto
title Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
title_short Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
title_full Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
title_fullStr Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
title_full_unstemmed Virulence and enzymatic activity of three new isolates of <i>Beauveria bassiana</i> (Ascomycota: Hypocreales) from the South American locust <i>Schistocerca cancellata</i> (Orthoptera: Acrididae)
title_sort virulence and enzymatic activity of three new isolates of <i>beauveria bassiana</i> (ascomycota: hypocreales) from the south american locust <i>schistocerca cancellata</i> (orthoptera: acrididae)
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87620
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