Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi

Antioxidant system is involved in arbuscular mycorrhizal symbiosis, but its role during the colonization process is still poorly understood. To gain new insights into the role of antioxidant system during root colonization by arbuscular mycorrhizal fungi, the activities of key antioxidant enzymes we...

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Detalles Bibliográficos
Autores principales:	Rodríguez, Yakelin, Vierheilig, Horst, Mazorra, Luis M.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2012
Materias:	Ciencias Agrarias Colonization intensity Peroxidases Polyphenol oxidases Solanum lycopersicum Superoxide dismutase
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/84413
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-84413
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 Colonization intensity Peroxidases Polyphenol oxidases Solanum lycopersicum Superoxide dismutase
spellingShingle	Ciencias Agrarias Colonization intensity Peroxidases Polyphenol oxidases Solanum lycopersicum Superoxide dismutase Rodríguez, Yakelin Vierheilig, Horst Mazorra, Luis M. Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
topic_facet	Ciencias Agrarias Colonization intensity Peroxidases Polyphenol oxidases Solanum lycopersicum Superoxide dismutase
description	Antioxidant system is involved in arbuscular mycorrhizal symbiosis, but its role during the colonization process is still poorly understood. To gain new insights into the role of antioxidant system during root colonization by arbuscular mycorrhizal fungi, the activities of key antioxidant enzymes were evaluated in tomato (Solanum lycopersicum L.) roots inoculated with six strains of different genera and species: two Glomus mosseae, Glomus cubense, Glomus intraradices, Glomus sp. and Acaulospora scrobiculata. Glomus cubense and A. scrobiculata strains reached the highest infectivity levels with maximum values of colonization frequency and intensity of 29-10.88% and 18-9.20%, respectively; G. mosseae strains showed an intermediate infectivity, both with 15% of colonization frequency and maximum intensities of 7.64- 7.06%, respectively; while the infectivity levels of Glomus sp. and G. intraradices strains were the lowest with colonization frequency- 13% and intensities- 5.07 and 5.41, respectively. Some activity patterns of peroxidase, superoxide dismutase, and polyphenol oxidase enzymes were not specific for early or late colonization stages neither for the colonization level and type of strain. However, a unique superoxide dismutase-band presents at early colonization and the low level of guaiacolperoxidase activity at later stages presents in all inoculated roots indicate that these antioxidant responses are independent of colonization degree and strain. Taking together, our data suggest that alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi, probably having the key role on those responses the specific feature of each strain rather than colonization per se.
format	Articulo Articulo
author	Rodríguez, Yakelin Vierheilig, Horst Mazorra, Luis M.
author_facet	Rodríguez, Yakelin Vierheilig, Horst Mazorra, Luis M.
author_sort	Rodríguez, Yakelin
title	Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
title_short	Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
title_full	Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
title_fullStr	Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
title_full_unstemmed	Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
title_sort	alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi
publishDate	2012
url	http://sedici.unlp.edu.ar/handle/10915/84413
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bdutipo_str	Repositorios
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Alterations of the antioxidant enzyme activities are not general characteristics of the colonization process by arbuscular mycorrhizal fungi

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