Histopathology caused by the entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, in the adult planthopper, Peregrinus maidis, a maize virus vector

The planthopper Peregrinus maidis (Ashmead) (Hemiptera: Delphacidae) is an important vector of maize viruses in tropical and subtropical areas. Planthoppers are biologically controlled with several species of entomopathogenic fungi that have been isolated from these insect pests of rice in Asia. Bea...

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Detalles Bibliográficos
Autores principales:	Toledo, Andrea Vanesa, Marino de Remes Lenicov, Ana María, López Lastra, Claudia Cristina
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2010
Materias:	Ciencias Agrarias antagonistic bacteria pests of cereal crops
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/123676
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-123676
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias antagonistic bacteria pests of cereal crops
spellingShingle	Ciencias Agrarias antagonistic bacteria pests of cereal crops Toledo, Andrea Vanesa Marino de Remes Lenicov, Ana María López Lastra, Claudia Cristina Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
topic_facet	Ciencias Agrarias antagonistic bacteria pests of cereal crops
description	The planthopper Peregrinus maidis (Ashmead) (Hemiptera: Delphacidae) is an important vector of maize viruses in tropical and subtropical areas. Planthoppers are biologically controlled with several species of entomopathogenic fungi that have been isolated from these insect pests of rice in Asia. Beauveria bassiana (Balsamo-Crivelli) Vuillemin and Metarhizium anisopliae (Metschnikoff) Sorokin (Hypocreales: Clavicipitaceae) appear to be the most useful against planthoppers because of their ease of mass production, storage, virulence, and application. In the present study, adults of P. maidis infected with B. bassiana and M. anisopliae were observed under light and scanning electron microscopy to characterize morphologically the process of infection and the development of these fungi, prior to and after the death of the host. The hydrophobic conidia of both fungal species were able to attach to all body regions, with a preference for surfaces containing hairs. Few germinated conidia were observed on the insect's body surface at 24, 48, and 72 hr post-inoculation. On the cuticular surface of P. maidis treated with B. bassiana and M. anisopliae, bacillus-like bacteria were observed. These microorganisms could be interacting with fungal conidia, playing a role of antibiosis that will not allow the fungal pathogens to germinate and penetrate. In the colonization events observed in this study, the formation and multiplication of hyphal bodies by both fungal species inside the host's body was noted. The host's whole body was invaded by hyphae between five and six days post-inoculation, and body fat was the most affected tissue.
format	Articulo Articulo
author	Toledo, Andrea Vanesa Marino de Remes Lenicov, Ana María López Lastra, Claudia Cristina
author_facet	Toledo, Andrea Vanesa Marino de Remes Lenicov, Ana María López Lastra, Claudia Cristina
author_sort	Toledo, Andrea Vanesa
title	Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
title_short	Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
title_full	Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
title_fullStr	Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
title_full_unstemmed	Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector
title_sort	histopathology caused by the entomopathogenic fungi, <i>beauveria bassiana</i> and <i>metarhizium anisopliae</i>, in the adult planthopper, <i>peregrinus maidis</i>, a maize virus vector
publishDate	2010
url	http://sedici.unlp.edu.ar/handle/10915/123676
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Histopathology caused by the entomopathogenic fungi, <i>Beauveria bassiana</i> and <i>Metarhizium anisopliae</i>, in the adult planthopper, <i>Peregrinus maidis</i>, a maize virus vector

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