Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina

An outbreak of a new disease occurred in cotton (Gossypium hirsutum) fields in northwest Argentina starting in the 2009-10 growing season and is still spreading steadily. The characteristic symptoms of the disease included slight leaf rolling and a bushy phenotype in the upper part of the plant. In...

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Autor principal: Hopp, Horacio Esteban
Publicado: 2017
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0031949X_v107_n3_p369_Agrofoglio
http://hdl.handle.net/20.500.12110/paper_0031949X_v107_n3_p369_Agrofoglio
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0031949X_v107_n3_p369_Agrofoglio
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spelling paper:paper_0031949X_v107_n3_p369_Agrofoglio2023-06-08T14:59:47Z Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina Hopp, Horacio Esteban An outbreak of a new disease occurred in cotton (Gossypium hirsutum) fields in northwest Argentina starting in the 2009-10 growing season and is still spreading steadily. The characteristic symptoms of the disease included slight leaf rolling and a bushy phenotype in the upper part of the plant. In this study, we determined the complete nucleotide sequences of two independent virus genomes isolated from cotton blue disease (CBD)-resistant and -susceptible cotton varieties. This virus genome comprised 5,866 nucleotides with an organization similar to that of the genus Polerovirus and was closely related to cotton leafroll dwarf virus, with protein identity ranging from 88 to 98%. The virus was subsequently transmitted to a CBD-resistant cotton variety using Aphis gossypii and symptoms were successfully reproduced. To study the persistence of the virus, we analyzed symptomatic plants from CBD-resistant varieties from different cotton-growing fields between 2013 and 2015 and showed the presence of the same virus strain. In addition, a constructed full-length infectious cDNA clone from the virus caused disease symptoms in systemic leaves of CBD-resistant cotton plants. Altogether, the new leafroll disease in CBD-resistant cotton plants is caused by an atypical cotton leafroll dwarf virus. © 2017 The American Phytopathological Society. Fil:Hopp, H.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0031949X_v107_n3_p369_Agrofoglio http://hdl.handle.net/20.500.12110/paper_0031949X_v107_n3_p369_Agrofoglio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description An outbreak of a new disease occurred in cotton (Gossypium hirsutum) fields in northwest Argentina starting in the 2009-10 growing season and is still spreading steadily. The characteristic symptoms of the disease included slight leaf rolling and a bushy phenotype in the upper part of the plant. In this study, we determined the complete nucleotide sequences of two independent virus genomes isolated from cotton blue disease (CBD)-resistant and -susceptible cotton varieties. This virus genome comprised 5,866 nucleotides with an organization similar to that of the genus Polerovirus and was closely related to cotton leafroll dwarf virus, with protein identity ranging from 88 to 98%. The virus was subsequently transmitted to a CBD-resistant cotton variety using Aphis gossypii and symptoms were successfully reproduced. To study the persistence of the virus, we analyzed symptomatic plants from CBD-resistant varieties from different cotton-growing fields between 2013 and 2015 and showed the presence of the same virus strain. In addition, a constructed full-length infectious cDNA clone from the virus caused disease symptoms in systemic leaves of CBD-resistant cotton plants. Altogether, the new leafroll disease in CBD-resistant cotton plants is caused by an atypical cotton leafroll dwarf virus. © 2017 The American Phytopathological Society.
author Hopp, Horacio Esteban
spellingShingle Hopp, Horacio Esteban
Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
author_facet Hopp, Horacio Esteban
author_sort Hopp, Horacio Esteban
title Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
title_short Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
title_full Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
title_fullStr Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
title_full_unstemmed Identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in Argentina
title_sort identification of a new cotton disease caused by an atypical cotton leafroll dwarf virus in argentina
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0031949X_v107_n3_p369_Agrofoglio
http://hdl.handle.net/20.500.12110/paper_0031949X_v107_n3_p369_Agrofoglio
work_keys_str_mv AT hopphoracioesteban identificationofanewcottondiseasecausedbyanatypicalcottonleafrolldwarfvirusinargentina
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