<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin

Pseudocercospora griseola is the causal agent of angular leaf spot of common bean (ALS). It has undergone parallel coevolution with its host and two major groups have been defined, “Andean” (P. griseola f. griseola) and “Mesoamerican” (P. griseola f. mesoamericana). The aim of this study was to anal...

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Detalles Bibliográficos
Autores principales:	Saparrat, Mario Carlos Nazareno, Fermoselle, Geraldine, Stenglein, Sebastián Alberto, Aulicino, Mónica Beatriz, Balatti, Pedro Alberto
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2009
Materias:	Ciencias Naturales Melanin Pseudocercospora griseola Phytopathogen Fungus Dark pigment Angular leaf spot Phaseolus vulgaris ‘‘Mesoamerican’’ group ‘‘Andean’’ group Variability
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/139466
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-139466
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Melanin Pseudocercospora griseola Phytopathogen Fungus Dark pigment Angular leaf spot Phaseolus vulgaris ‘‘Mesoamerican’’ group ‘‘Andean’’ group Variability
spellingShingle	Ciencias Naturales Melanin Pseudocercospora griseola Phytopathogen Fungus Dark pigment Angular leaf spot Phaseolus vulgaris ‘‘Mesoamerican’’ group ‘‘Andean’’ group Variability Saparrat, Mario Carlos Nazareno Fermoselle, Geraldine Stenglein, Sebastián Alberto Aulicino, Mónica Beatriz Balatti, Pedro Alberto <i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
topic_facet	Ciencias Naturales Melanin Pseudocercospora griseola Phytopathogen Fungus Dark pigment Angular leaf spot Phaseolus vulgaris ‘‘Mesoamerican’’ group ‘‘Andean’’ group Variability
description	Pseudocercospora griseola is the causal agent of angular leaf spot of common bean (ALS). It has undergone parallel coevolution with its host and two major groups have been defined, “Andean” (P. griseola f. griseola) and “Mesoamerican” (P. griseola f. mesoamericana). The aim of this study was to analyze the nature and the level of the dark pigment synthesized by the representatives of each group. After 21 days of incubation on potato dextrose agar medium, P. griseola f. griseola isolate S3b developed colonies with diameters of 17.5 ± 1.3 mm and concentric rings of pigmentation. Isolate T4 of P. griseola f. mesoamericana presented smaller colonies (9.9 ± 0.3 mm) with a uniform dark-gray color. Both isolates, S3b and T4, produced the same pigment, a 1,8-dihydroxynaphthalene-melanin, although different in quantity and structural features as suggested by the IR spectrum. The P. griseola f. griseola isolate S3b had a higher growth rate and melanin content as well as smaller sensitivity to melanin synthesis inhibitors compared to the isolate T4 of P. griseola f. mesoamericana. These results suggest a possible link between melanin and growth in P. griseola.
format	Articulo Articulo
author	Saparrat, Mario Carlos Nazareno Fermoselle, Geraldine Stenglein, Sebastián Alberto Aulicino, Mónica Beatriz Balatti, Pedro Alberto
author_facet	Saparrat, Mario Carlos Nazareno Fermoselle, Geraldine Stenglein, Sebastián Alberto Aulicino, Mónica Beatriz Balatti, Pedro Alberto
author_sort	Saparrat, Mario Carlos Nazareno
title	<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
title_short	<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
title_full	<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
title_fullStr	<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
title_full_unstemmed	<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
title_sort	<i>pseudocercospora griseola</i> causing angular leaf spot on <i>phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin
publishDate	2009
url	http://sedici.unlp.edu.ar/handle/10915/139466
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bdutipo_str	Repositorios
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<i>Pseudocercospora griseola</i> causing angular leaf spot on <i>Phaseolus vulgaris</i> produces 1,8-dihydroxynaphthalene-melanin

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