Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)

Introduction: Entomopathogenic fungi have been used as biological control agents of insect pests and have demonstrated a promising ability to colonize as endophytes a wide range of plant species. Objective: The aims of this study were to evaluate, in pepper plants, the most effective Beauveria bassi...

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Autores principales:	Allegrucci, Natalia, Velázquez, María Silvana, Russo, María Leticia, Vianna, María Florencia, Abarca, Camila Lucía, Scorsetti, Ana Clara
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2020
Materias:	Botánica Endophytic fungi Inoculation techniques Biological control agents Aphid pest
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/125847
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-125847
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Botánica Endophytic fungi Inoculation techniques Biological control agents Aphid pest
spellingShingle	Botánica Endophytic fungi Inoculation techniques Biological control agents Aphid pest Allegrucci, Natalia Velázquez, María Silvana Russo, María Leticia Vianna, María Florencia Abarca, Camila Lucía Scorsetti, Ana Clara Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
topic_facet	Botánica Endophytic fungi Inoculation techniques Biological control agents Aphid pest
description	Introduction: Entomopathogenic fungi have been used as biological control agents of insect pests and have demonstrated a promising ability to colonize as endophytes a wide range of plant species. Objective: The aims of this study were to evaluate, in pepper plants, the most effective Beauveria bassiana inoculation techniques. In order to evaluate the presence of natural endophytes and its interaction with B. bassiana. Also to assess the effect of B. bassiana on the aphid Myzus persicae pepper leaf feeding preference and growth. Methods: Three inoculation techniques were evaluated: leaf spraying, seed immersion and root dipping. The pepper plants were inoculated with a conidia suspension adjusted to 1×10⁸ conidia/ml. The presence of B. bassiana in the seedlings was evaluated at 7, 15 and 28 days after inoculation. Results: We found significant statistical differences between inoculation techniques. Foliar spraying showed the highest B. bassiana colonization frequency. The natural endophytes presented higher presence in the treatments in which B. bassiana had a low presence. This might indicate the occurrence of antifungal activity that interferes with the establishment of the entomopathogen in pepper tissues. We did not find statistical differences between inoculated and control pepper leaves with regard to the mortality and reproduction of the aphid pest M. persicae. However, the inoculation with B. bassiana showed a tendency to increase the mortality of adults and to decrease the offspring (nymphs). We did not find significant differences in the feeding preference between inoculated and control leaves, although there was a higher number of individuals on control leaves compared to those inoculated. Conclusions: The strain B. bassiana LPSC 1067 was established effectively as an endophyte in the pepper tissues. The most effective inoculation technique was leaf spraying. We did not find differences of statistical significance with regard to the mortality and reproduction of the aphid pest M. persicae. However, the inoculation with B. bassiana showed a tendency to increase the mortality of adults and to decrease the offspring (nymphs). Future studies evaluating the indirect effects of endophytic entomopathogens on both plants and herbivorous insects are needed to further explore their potential use in the management of insect pests.
format	Articulo Articulo
author	Allegrucci, Natalia Velázquez, María Silvana Russo, María Leticia Vianna, María Florencia Abarca, Camila Lucía Scorsetti, Ana Clara
author_facet	Allegrucci, Natalia Velázquez, María Silvana Russo, María Leticia Vianna, María Florencia Abarca, Camila Lucía Scorsetti, Ana Clara
author_sort	Allegrucci, Natalia
title	Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
title_short	Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
title_full	Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
title_fullStr	Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
title_full_unstemmed	Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)
title_sort	establishment of the entomopathogenic fungus beauveria bassiana as an endophyte in capsicum annuum and its effects on the aphid pest myzus persicae (homoptera: aphididae)
publishDate	2020
url	http://sedici.unlp.edu.ar/handle/10915/125847
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Establishment of the entomopathogenic fungus Beauveria bassiana as an endophyte in Capsicum annuum and its effects on the aphid pest Myzus persicae (Homoptera: Aphididae)

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