Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii

Abstract Cercospora leaf spot (CLS), caused by Cercospora beticola, is a major disease of Beta vulgaris worldwide. No sexual stage is known for C. beticola but in its asexual form it overwinters on infected plant debris as pseudostromata, and travels short distances by rain splash-dispersed conidios...

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Autores principales:	Niloofar Vaghefi, Scot C. Nelson, Julie R. Kikkert, Sarah J. Pethybridge
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7ffd70f1f9c54fdaabfa8c10cec1685f
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spelling	oai:doaj.org-article:7ffd70f1f9c54fdaabfa8c10cec1685f2021-12-02T12:30:12ZGenetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii10.1038/s41598-017-01929-42045-2322https://doaj.org/article/7ffd70f1f9c54fdaabfa8c10cec1685f2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01929-4https://doaj.org/toc/2045-2322Abstract Cercospora leaf spot (CLS), caused by Cercospora beticola, is a major disease of Beta vulgaris worldwide. No sexual stage is known for C. beticola but in its asexual form it overwinters on infected plant debris as pseudostromata, and travels short distances by rain splash-dispersed conidiospores. Cercospora beticola infects a broad range of host species and may be seedborne. The relative contribution of these inoculum sources to CLS epidemics on table beet is not well understood. Pathogen isolates collected from table beet, Swiss chard and common lambsquarters in mixed-cropping farms and monoculture fields in New York and Hawaii, USA, were genotyped (n = 600) using 12 microsatellite markers. All isolates from CLS symptoms on lambsquarters were identified as C. chenopodii. Sympatric populations of C. beticola derived from Swiss chard and table beet were not genetically differentiated. Results suggested that local (within field) inoculum sources may be responsible for the initiation of CLS epidemics in mixed-cropping farms, whereas external sources of inoculum may be contributing to CLS epidemics in the monoculture fields in New York. New multiplex PCR assays were developed for mating-type determination for C. beticola. Implications of these findings for disease management are discussed.Niloofar VaghefiScot C. NelsonJulie R. KikkertSarah J. PethybridgeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-16 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Niloofar Vaghefi Scot C. Nelson Julie R. Kikkert Sarah J. Pethybridge Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
description	Abstract Cercospora leaf spot (CLS), caused by Cercospora beticola, is a major disease of Beta vulgaris worldwide. No sexual stage is known for C. beticola but in its asexual form it overwinters on infected plant debris as pseudostromata, and travels short distances by rain splash-dispersed conidiospores. Cercospora beticola infects a broad range of host species and may be seedborne. The relative contribution of these inoculum sources to CLS epidemics on table beet is not well understood. Pathogen isolates collected from table beet, Swiss chard and common lambsquarters in mixed-cropping farms and monoculture fields in New York and Hawaii, USA, were genotyped (n = 600) using 12 microsatellite markers. All isolates from CLS symptoms on lambsquarters were identified as C. chenopodii. Sympatric populations of C. beticola derived from Swiss chard and table beet were not genetically differentiated. Results suggested that local (within field) inoculum sources may be responsible for the initiation of CLS epidemics in mixed-cropping farms, whereas external sources of inoculum may be contributing to CLS epidemics in the monoculture fields in New York. New multiplex PCR assays were developed for mating-type determination for C. beticola. Implications of these findings for disease management are discussed.
format	article
author	Niloofar Vaghefi Scot C. Nelson Julie R. Kikkert Sarah J. Pethybridge
author_facet	Niloofar Vaghefi Scot C. Nelson Julie R. Kikkert Sarah J. Pethybridge
author_sort	Niloofar Vaghefi
title	Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
title_short	Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
title_full	Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
title_fullStr	Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
title_full_unstemmed	Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii
title_sort	genetic structure of cercospora beticola populations on beta vulgaris in new york and hawaii
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/7ffd70f1f9c54fdaabfa8c10cec1685f
work_keys_str_mv	AT niloofarvaghefi geneticstructureofcercosporabeticolapopulationsonbetavulgarisinnewyorkandhawaii AT scotcnelson geneticstructureofcercosporabeticolapopulationsonbetavulgarisinnewyorkandhawaii AT julierkikkert geneticstructureofcercosporabeticolapopulationsonbetavulgarisinnewyorkandhawaii AT sarahjpethybridge geneticstructureofcercosporabeticolapopulationsonbetavulgarisinnewyorkandhawaii
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Genetic structure of Cercospora beticola populations on Beta vulgaris in New York and Hawaii

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