Mitigation of Tomato Spotted Wilt Virus Infection and Symptom Expression by Water Stress

Córdoba, Alicia; Taleisnik, Edith; Brunotto, M.; Racca, R. W.

doi:10.1111/j.1439-0434.1991.tb00160.x

Cited by 15 publications

(10 citation statements)

References 12 publications

(5 reference statements)

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“…1). The increase of spotted wilt in peanut with irrigation up to 535 mm in 1992 and 587 mm in 1993 agrees with a greenhouse study on spotted wilt in tomato (5). The decrease of spotted wilt with irrigation in excess of the optimum was unexpected, but this decrease may have been due to physical action ofoverhead irrigation on thrips (4).…”

Section: Discussionsupporting

confidence: 68%

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Seeding Rate, Irrigation, and Cultivar Effects on Tomato Spotted Wilt, Rust, and Southern Blight Diseases of Peanut1

et al. 2001

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Tomato spotted wilt virus has been the cause of an importantpeanut disease in southwestern Texassince the mid-1Q80s. Following observations of elevated disease incidence associated with poor stands, high seeding rates were recommended to reduce risks of spotted wilt. The primary objective of this study was to determine the relationship of spotted wilt incidence to seeding rate and irrigation. Whether the management of rust (Puccinia arachidis Speg.) and southern blight (Sclerotium rolfsii Sacc.) would be affected by seeding rate and irrigation was a secondary objective. Two runner peanut cultivars, GK-7 and Southern Runner, were planted in 1992 and 1993 in single rows with a precision planter at 8, 12, and 22 seeds m-2 and irrigated with amounts ranging from a season total of 0 to 760 mm. Spotted wilt (30.5-cm-Ioci with symptoms) at digging differed Significantly for GK7and Southern Runnerin 1992 (29vs. 20%) and 1993 (23 vs. 16%). The seeding rate of either cultivar did not Significantly affect spotted wilt in either year. Spotted wiltincreased asirrigation increased to a peak of 535 mm total water in 1992 and 587 mm in 1993, and decreased slightlyat higher irrigation levels. Rust was Significantly affected by seeding rate only in 1992, with lowest rust ratings at 8 seeds m-2. GK-7 had significantlyhigher rust ratingsthan Southern Runner in 1992and 1993. Southern blight in 1993 was lowest with below-optimum irrigation. Reduced seeding rate in irrigated peanutproduction did not increase risk of spotted wilt under conditions of this study and may have potential to enhance management efforts for rust and southern blight.lContribution of Texas Agric. Ext. Servoand Texas Agric Exp. Sta.

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Section: Discussionsupporting

confidence: 68%

“…Saturated soil increased severity of spotted wilt in tomato (5). Thus, we hypothesized that plots receiving the greatest amount of irrigation would have the greatest spotted wilt-related losses.…”

mentioning

confidence: 99%

Seeding Rate, Irrigation, and Cultivar Effects on Tomato Spotted Wilt, Rust, and Southern Blight Diseases of Peanut1

et al. 2001

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“…Virus spread is also influenced by the flow of metabolites in the plant ( Bennett, 1940 ). Since WD may affect the relationship between carbon availability and sink organ growth ( Muller et al, 2011 ), it can be assumed that long-distance transport of viral particles through phloem will also be affected, leading to slower systemic movement ( Córdoba et al, 1991 ; Leisner et al, 1993 ; Leisner and Howell, 1993 ). Here, correlated with the negative effects of WD on plant growth and development we observed a significant reduction in the rate of systemic symptoms appearance in the most WD-sensitive accessions such as Mr-0 and Ct-1.…”

Section: Discussionmentioning

confidence: 99%

Interactions Between Drought and Plant Genotype Change Epidemiological Traits of Cauliflower mosaic virus

et al. 2018

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Plants suffer from a broad range of abiotic and biotic stresses that do not occur in isolation but often simultaneously. Productivity of natural and agricultural systems is frequently constrained by water limitation, and the frequency and duration of drought periods will likely increase due to global climate change. In addition, phytoviruses represent highly prevalent biotic threat in wild and cultivated plant species. Several hints support a modification of epidemiological parameters of plant viruses in response to environmental changes but a clear quantification of plant–virus interactions under abiotic stresses is still lacking. Here we report the effects of a water deficit on epidemiological parameters of Cauliflower mosaic virus (CaMV), a non-circulative virus transmitted by aphid vectors, in nine natural accessions of Arabidopsis thaliana with known contrasted responses to water deficit. Plant growth-related traits and virus epidemiological parameters were evaluated in PHENOPSIS, an automated high throughput phenotyping platform. Water deficit had contrasted effects on CaMV transmission rate and viral load among A. thaliana accessions. Under well-watered conditions, transmission rate tended to increase with viral load and with CaMV virulence across accessions. Under water deficit, transmission rate and virulence were negatively correlated. Changes in the rate of transmission under water deficit were not related to changes in viral load. Our results support the idea that optimal virulence of a given virus, as hypothesized under the transmission-virulence trade-off, is highly dependent on the environment and growth traits of the host.

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“…Symptoms of PMVcan easilybe overlooked because they often are rather mild and tend to fade or become masked as plants mature. Symptoms of TSWV usually are much more discernible; however, they too might be mitigated in plants underwater stress (2,5). In 1991, when moisture levels in general were adequate throughout the growing season, TSWV was detected in only symptomatic plants and in about 20% of the asymptomatic plants.…”

Section: Discussionmentioning

confidence: 98%

Identification of Viruses Infecting Peanut in Alabama1

Gudauskas¹,

Burch²,

Peng³

et al. 1993

Peanut Science

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Leaf samples collected from 1,883 peanut plants in 158 fields in 14 counties during July- August, 1990 and 1991, were tested for peanut mottle (PMV), peanut stripe (PStV), peanut stunt (PSV), and tomato spotted wilt (TSWV) viruses by sap inoculations onto indicator plants and/or by enzyme-linked immunosorbent assay (ELISA). Of 889 plants showing virus-like symptoms, 58% were infected with TSWV alone or mixed with PMV or PSV, 36% with PMV alone or mixed with TSWV or PSV, and 5% with PSV alone or mixed with TSWV or PMV. Double infections of PMV with TSWV, PSVwith TSWV, and PMVwith PSVwere detected in 24%,3%, and 1% of the symptomatic plants. Of 994 apparent asymptomatic plants, 16% were infected with PMV alone or mixed with TSWV, 8% with TSWV alone or mixed with PMV or PSV, and 5% with PSV alone or mixed with TSWV. Double infections of PMV with TSWV and PSVwith TSWVwere detected in 2% and 1%of the asymptomatic plants. PMV and TSWV were found in at least one field in every county sometime during the two seasons; PSV was found in 13 counties. The most notable difference in virus incidence betWeen the two years was that TSWV was found in 20% of the asymptomatic plants in 1990 as compared to 6% in 1991. PStV was not detected by ELISA in 1990 or 1991, and no reactions suggestive of PStV or any virus other than PMV, PSV, or TSWV were observed on indicator plants used to assay the 1990 collections.

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Mitigation of Tomato Spotted Wilt Virus Infection and Symptom Expression by Water Stress

Cited by 15 publications

References 12 publications

Seeding Rate, Irrigation, and Cultivar Effects on Tomato Spotted Wilt, Rust, and Southern Blight Diseases of Peanut1

Seeding Rate, Irrigation, and Cultivar Effects on Tomato Spotted Wilt, Rust, and Southern Blight Diseases of Peanut1

Interactions Between Drought and Plant Genotype Change Epidemiological Traits of Cauliflower mosaic virus

Identification of Viruses Infecting Peanut in Alabama1

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