Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility

Chile is the largest producer and exporter of blueberries in the southern hemisphere. During the 2006-2007 growing season, blueberry production increased in Chile as a result of an expansión of the planted área, reaching around 10,762 ha in 2007. Fungal diseases are of great importance in blueberry...

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Autores principales:	Larach,Alejandra, Besoain,Ximena, Salgado,Eduardo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2009
Materias:	Blueberry diseases highbush blueberry blueberry cultivars Phytophthora Vaccinium corymbosum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300010
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spelling	oai:scielo:S0718-162020090003000102010-09-06Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibilityLarach,AlejandraBesoain,XimenaSalgado,Eduardo Blueberry diseases highbush blueberry blueberry cultivars Phytophthora Vaccinium corymbosum Chile is the largest producer and exporter of blueberries in the southern hemisphere. During the 2006-2007 growing season, blueberry production increased in Chile as a result of an expansión of the planted área, reaching around 10,762 ha in 2007. Fungal diseases are of great importance in blueberry production; among them, Phytophthora root rot is a disease known worldwide as a major cause of death for highbush blueberry plants in the USA. Symptoms of Phytophthora root rot have been detected over the last four years in Chile. Nevertheless, the causal agents have not been previously described in Chile. This study aims to determine the pathogenicity of Phytophthora spp. isolated from highbush blueberry and to study cultivar susceptibility. The pathogenicity tests show that the species P. cinnamomi and P. citrophthora were the cause of crown and root rot of highbush blueberry. Significant differences in plant height, shoot growth stem diameter, and fresh weights of roots and aerial parts between inoculated and non-inoculated plants were observed. Blueberry cv. 'Toro' was the only cultivar resistant to P. cinnamomi, while both 'Elliot' and 'Toro' were resistant to P. citrophthora. Regardless of the Phytophthora species, cv. 'Biloxi' was the most affected. This is the first report of Phytophthora root rot in Chile and, to our knowledge, the first report of P. citrophthora affecting blueberry plants worldwide.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.36 n.3 20092009-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300010en10.4067/S0718-16202009000300010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Blueberry diseases highbush blueberry blueberry cultivars Phytophthora Vaccinium corymbosum
spellingShingle	Blueberry diseases highbush blueberry blueberry cultivars Phytophthora Vaccinium corymbosum Larach,Alejandra Besoain,Ximena Salgado,Eduardo Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
description	Chile is the largest producer and exporter of blueberries in the southern hemisphere. During the 2006-2007 growing season, blueberry production increased in Chile as a result of an expansión of the planted área, reaching around 10,762 ha in 2007. Fungal diseases are of great importance in blueberry production; among them, Phytophthora root rot is a disease known worldwide as a major cause of death for highbush blueberry plants in the USA. Symptoms of Phytophthora root rot have been detected over the last four years in Chile. Nevertheless, the causal agents have not been previously described in Chile. This study aims to determine the pathogenicity of Phytophthora spp. isolated from highbush blueberry and to study cultivar susceptibility. The pathogenicity tests show that the species P. cinnamomi and P. citrophthora were the cause of crown and root rot of highbush blueberry. Significant differences in plant height, shoot growth stem diameter, and fresh weights of roots and aerial parts between inoculated and non-inoculated plants were observed. Blueberry cv. 'Toro' was the only cultivar resistant to P. cinnamomi, while both 'Elliot' and 'Toro' were resistant to P. citrophthora. Regardless of the Phytophthora species, cv. 'Biloxi' was the most affected. This is the first report of Phytophthora root rot in Chile and, to our knowledge, the first report of P. citrophthora affecting blueberry plants worldwide.
author	Larach,Alejandra Besoain,Ximena Salgado,Eduardo
author_facet	Larach,Alejandra Besoain,Ximena Salgado,Eduardo
author_sort	Larach,Alejandra
title	Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
title_short	Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
title_full	Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
title_fullStr	Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
title_full_unstemmed	Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility
title_sort	crown and root rot of highbush blueberry caused by phytophthora cinnamomi and p. citrophthora and cultivar susceptibility
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300010
work_keys_str_mv	AT larachalejandra crownandrootrotofhighbushblueberrycausedbyphytophthoracinnamomiandpcitrophthoraandcultivarsusceptibility AT besoainximena crownandrootrotofhighbushblueberrycausedbyphytophthoracinnamomiandpcitrophthoraandcultivarsusceptibility AT salgadoeduardo crownandrootrotofhighbushblueberrycausedbyphytophthoracinnamomiandpcitrophthoraandcultivarsusceptibility
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Crown and root rot of highbush blueberry caused by Phytophthora cinnamomi and P. citrophthora and cultivar susceptibility

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