Abstract
Turnip yellow mosaic virus (TYMV) has been reported throughout Europe, New Zealand, and Australia. In 1994, this virus was identified in two field plantings of Bok Choi and one planting of Pak Choi (Brassica campestris Chinensis group var. communis) in Durham and Haldimand-Norfolk counties, respectively. In early October, approximately 25% of the plants were infected at each site. Both the striped flea beetle (Phyllotreta striolata (F.)) and the crucifer flea beetle (P. Cruciferae(Goeze)), reported vectors of the virus (1), were present at each site. Infected plants exhibited bright yellow to yellow-green mosaic mottling and often showed chlorotic lesions on the lower leaves. Vein clearing was also seen on several plants. Plants were often coinfected with turnip mosaic virus. Four symptomatic plants were taken from each field site for testing. Spherical virus particles (28 nm) were identified as TYMV by electron microscopy following post-antibody decoration and enzyme-linked immunosorbent assay with the TYMV Agdia test kit. Symptoms were reproduced on both Bok and Pak Choi by mechanical inoculation into healthy plants. Extended host range susceptibility tests with 14 differential hosts were consistent with those reported in the VIDE database (1). This virus, in the presence of the flea beetle vectors, may pose a threat to susceptible traditional cruciferous vegetables grown extensively in this area. Reference: (1) A. A Brunt et al., eds. Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 16th January 1997.
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Claims 11
Claim · model-written summary
TYMV was identified in two Bok Choi plantings in Durham.
Verbatim
e0“this virus was identified in two field plantings of Bok Choi and one planting of Pak Choi (Brassica campestris Chinensis group var. communis) in Durham and Haldimand-Norfolk counties, respectively.”
Claim · model-written summary
TYMV was identified in one Pak Choi planting in Haldimand-Norfolk.
Verbatim
e0“this virus was identified in two field plantings of Bok Choi and one planting of Pak Choi (Brassica campestris Chinensis group var. communis) in Durham and Haldimand-Norfolk counties, respectively.”
Claim · model-written summary
About 25% of plants were infected at each site in early October.
Verbatim
e0“In early October, approximately 25% of the plants were infected at each site.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Both reported flea beetle vectors were present at each site.
Verbatim
e0“Both the striped flea beetle (Phyllotreta striolata (F.)) and the crucifer flea beetle (P. Cruciferae(Goeze)), reported vectors of the virus (1), were present at each site.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Infected plants had mosaic mottling and chlorotic lesions.
Verbatim
e0“Infected plants exhibited bright yellow to yellow-green mosaic mottling and often showed chlorotic lesions on the lower leaves.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Several infected plants showed vein clearing.
Verbatim
e0“Vein clearing was also seen on several plants.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Plants were often coinfected with turnip mosaic virus.
- Taxon
- Bok Choie1
- Interactor
- turnip mosaic virus
Turnip mosaic viruse0pathogen - Outcome
- coinfectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were often coinfected with turnip mosaic virus.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Virus particles were identified as TYMV by electron microscopy and ELISA.
- Taxon
- Bok Choie1
- Interactor
- TYMV
Turnip yellow mosaic viruse0pathogen - Outcome
- identified as TYMVe0
- Value
- 28 nme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spherical virus particles (28 nm) were identified as TYMV by electron microscopy following post-antibody decoration and enzyme-linked immunosorbent assay with the TYMV Agdia test kit.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Mechanical inoculation reproduced symptoms on Bok Choi.
Not reportedComparatorDirection
Verbatim
e0“Symptoms were reproduced on both Bok and Pak Choi by mechanical inoculation into healthy plants.”
e1“field plantings of Bok Choi”
Claim · model-written summary
Mechanical inoculation reproduced symptoms on Pak Choi.
Not reportedComparatorDirection
Verbatim
e0“Symptoms were reproduced on both Bok and Pak Choi by mechanical inoculation into healthy plants.”
Claim · model-written summary
Host range susceptibility tests matched reports in the VIDE database.
Verbatim
e0“Extended host range susceptibility tests with 14 differential hosts were consistent with those reported in the VIDE database (1).”
e1“field plantings of Bok Choi”
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