Data/hora: 09/06/2024 02:54:30

Provedor de dados: | 102
País: | Brazil
Título: | Mosaic in Senna occidentalis in southern Brazil induced by a new strain of Soybean mosaic virus
Autores: | ALMEIDA,ÁLVARO M. R.; SAKAI,JUNICHI; SOUTO,ELIEZER R.; KITAJIMA,ELLIOT W.; FUKUJI,TATIANA S.; HANADA,KAORU.
Data: | 2002-04-01
Ano: | 2002
Palavras-chave: | SMV; Potyvirus; Taxonomy.
Resumo: | Plants of Senna occidentalis (sin. Cassia occidentalis) with mosaic symptoms were collected near a soybean (Glycine max) field where some plants exhibited symptoms of mosaic and blistering. A preliminary examination of leaf tissue from diseased S. occidentalis by electron microscopy revealed the presence of pinwheel inclusions as well as long flexuous particles, indicating the presence of a potyvirus. Host range, serology, and amino acid sequence from this potyvirus were similar to those from other Brazilian isolates of Soybean mosaic virus (SMV). The 3'- terminal region of the genomic RNA was cloned and a cDNA sequence of 1.9 kb upstream of the poly (A) tract was determined. The sequence contains a single open reading frame and a 3'- non-translated region (NTR) of 259 bp. The nucleotide sequence of the CP gene of SMV-Soc was 98% identical to that of Brazilian isolates SMV-B, SMV-L, and SMV-FT10. The percentage of nucleotide identity of their 3'-NTR's was 91, 98, and 99% in relation to SMV-L, SMV-B, and SMV-FT10, respectively. In contrast to other Brazilian SMV isolates studied, SMV-Soc was able to infect sunflower (Helianthus annuus). Based on these results, the S. occidentalis isolate was identified as a new strain of SMV belonging to the SMV strain, group G5 and was named SMV-Soc. This is the first report of naturaly occurring SMV infecting plants of S. occidentalis in Brazil, adding this weed as a new source of SMV in the field.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000200005
Editor: | Sociedade Brasileira de Fitopatologia
Relação: | 10.1590/S0100-41582002000200005
Formato: | text/html
Fonte: | Fitopatologia Brasileira  v.27 n.2 2002
Fonte: | info:eu-repo/semantics/openAccess