Queima dos brotos da soja, uma moléstia causada pelo vírus da necrose branca ou couve

Costa, Á. S.; Miyásaka, Shiro; Pinto, A. J. D'Andréa

doi:10.1590/s0006-87051955000100030

Cited by 8 publications

(4 citation statements)

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“…), tobacco (Nicotiana tabacum L.), soybean, peanut (Arachis hypogaea L.), sunflower (Helianthus annuus L.) and some weeds (Costa & Carvalho, 1961). The association of soybean bud blight and TSV was reported for the first time in 1955 (Costa et al, 1955). At that time, the authors mentioned that similar symptoms were described in soybean in the USA, but these symptoms were caused by Tobacco ringspot virus (TRSV), family Comoviridae, genus Nepovirus.…”

Section: Introductionmentioning

confidence: 97%

“…At that time, the authors mentioned that similar symptoms were described in soybean in the USA, but these symptoms were caused by Tobacco ringspot virus (TRSV), family Comoviridae, genus Nepovirus. The disease was called soybean bud blight by Costa et al (1955). Since then, several other viruses inducing similar symptoms have been described on soybeans in Brazil (Costa, 1982), causing serious confusion in field diagnosis.…”

Section: Introductionmentioning

confidence: 99%

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Biological and molecular characterization of an isolate of Tobacco streak virus obtained from soybeans in Brazil

Almeida

Sakai²,

Hanada³

et al. 2005

Fitopatol. bras.

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A virus was isolated from soybean (Glycine max) plants with symptoms of dwarfing and bud blight in Wenceslau Braz County, Paraná, Brazil. The host range and properties resembled those of Tobacco streak virus (TSV). The purified virus showed three peaks in a frozen sucrose gradient. Antiserum was produced and the virus was serologically related to TSV. Electron microscopy detected 28 nm spherical particles. Coat protein (CP) had a Mr of 29.880 Da. A fragment of 1028 nt was amplified, cloned and sequenced. One open reading frame with 717 nt was identified and associated to the CP. The CP gene shared 83% identity with the sequence of TSV CP from white clover (Trifolium repens) (GenBank CAA25133). This is the first report of the biological and molecular characterization of TSV isolated from soybeans. It is proposed that this isolate be considered a strain of TSV named TSV-BR.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Biological and molecular characterization of an isolate of Tobacco streak virus obtained from soybeans in Brazil

Almeida

Sakai²,

Hanada³

et al. 2005

Fitopatol. bras.

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“…Tobacco streak virus (TSV) is the type member of the genus Ilarvirus (Bromoviridae) and the causal agent of bud blight in soybean (Glycine max L. Merrill) in the United States and Brazil (Costa et al 1955;Fagbenle and Ford 1970). In the United States, TSV was first reported in Iowa and Ohio in soybean plants showing symptoms of stunting, shepherd's crook, delayed maturity, poor pod production, dark green apical leaves with rugosity, necrotic streaks in the stem, and bud blight (Johnson 1936(Johnson , 1943Melhus 1942;Fagbenle and Ford 1970).…”

Section: Introductionmentioning

confidence: 99%

Sensitive and Specific qPCR and Nested RT-PCR Assays for the Detection of Tobacco Streak Virus in Soybean

et al. 2021

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Tobacco streak virus (TSV) is a re-emerging and understudied pathogen of soybean (Glycine max). Management of TSV is challenging due to the multiple modes of transmission, widespread susceptibility of commercial soybean, and lack of reliable diagnostic tests for the virus. Soybean plants with TSV-like, virus-like, or no symptoms were collected from commercial and research fields in seven counties in Wisconsin. Two sensitive assays were developed for the detection of TSV: a fluorescent dye-based quantitative RT-PCR (qPCR) assay and a nested RT-PCR (nRT-PCR). Tobacco streak virus was detected in 47% and 91% of symptomatic samples using the qPCR assay and the nRT-PCR assay, respectively, suggesting that the nRT-PCR assay has higher sensitivity for detecting TSV. The qPCR assay’s limit of detection was determined at 10 fg and the assay was used to estimate the viral load in TSV-symptomatic samples. The titer of TSV in these samples was determined by absolute quantification and ranged from 15 fg to 0.796 ng. The two assays reported here provide diagnostic tools for the rapid and accurate detection of TSV that can aid in monitoring outbreaks, assessing management strategies, or screening soybean cultivars/accessions for resistance to the virus.

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“…Soybean bud blight in Brazil is caused by tobacco streak virus (COSTA et al 1955) and is presently found in some areas in the states of Sao Paulo and Parana. The virus has caused severe yield losses only to soybeans although it also infects cotton, sunflower, tobacco, tomato, and some weeds (COSTA and CARVALHO 1961).…”

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confidence: 99%

Effect of Sowing Time on the Incidence of Bud Blight in Soybean (Glycine max L. Merr.)

Almeida¹,

Corso²

1991

Journal of Phytopathology

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The incidence of soybean bud blight in soybeans in Brazil is sporadic in most of the production areas but is endemic in a few others. Tobacco streak virus (TSV), the causal agent, is transmitted by thrips. The vector population starts declining everytime the amount of accumulated rain is over 300 mm. A four year trial (1986—1990) indicated that by delaying the sowing time it was possible to drastically reduce the incidence of the disease, allowing farmers to grow a cash crop. Significant correlations were observed between percentage of infection, number of days with rain, total of accumulated rain and total of thrips surveyed. A multiple linear regression (y = 23.93 + 0.7 × 1—0.06 × 2) that accounted for 80 % of the variation was obtained, considering percentage of infected plants (y), total of thrips (×1) and total of accumulated rain (×2). Results indicated that farmers should sow during the month of December, in areas where the disease is endemic.

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Queima dos brotos da soja, uma moléstia causada pelo vírus da necrose branca ou couve

Abstract: SILVA, JOSÉ GOMES DA. Suscetibilidade de variedades de soja à queima dos brotos em campo. Campinas, Instituto agronômico, 1954. [Comunicação verbal]

Cited by 8 publications

References 0 publications

Biological and molecular characterization of an isolate of Tobacco streak virus obtained from soybeans in Brazil

Biological and molecular characterization of an isolate of Tobacco streak virus obtained from soybeans in Brazil

Sensitive and Specific qPCR and Nested RT-PCR Assays for the Detection of Tobacco Streak Virus in Soybean

Effect of Sowing Time on the Incidence of Bud Blight in Soybean (Glycine max L. Merr.)

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