Abstract
An emerging systemic necrosis disease of corn salad was first observed in the Nantes region of France in the late 2000s. Classical virology and high-throughput sequencing approaches demonstrated that the disease is associated with four different necroviruses: tobacco necrosis virus A (TNVA), tobacco necrosis virus D (TNVD), olive mild mosaic virus (OMMV), and a novel recombinant Alphanecrovirus for which the name corn salad necrosis virus (CSNV) is proposed. Satellite tobacco necrosis virus was also frequently observed. Koch's postulates were completed for all four agents, each one alone being able to cause systemic necrosis of varying severity in corn salad. OMMV was the most frequently observed virus and causes the most severe symptoms. TNVA was the second, both in terms of prevalence and symptom severity while TNVD and CSNV were only rarely observed and caused the less severe symptoms. The emergence of this systemic disease may have been favored by the short and repeated cropping cycles used for corn salad, possibly allowing the selection of necrovirus isolates with an improved ability to systemically invade this specialty crop.
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Claims 7
Claim · model-written summary
The corn salad systemic necrosis disease was associated with four different necroviruses.
Verbatim
e0“systemic necrosis disease of corn salad”
e1“the disease is associated with four different necroviruses”
Claim · model-written summary
Olive mild mosaic virus (OMMV) was the most frequently observed necrovirus in corn salad and caused the most severe symptoms.
- Taxon
- corn salade0
- Interactor
- olive mild mosaic virusOlive mild mosaic viruse1pathogen
- Outcome
- most severe symptomse3
- Qualifier
- most frequently observed viruse3
Verbatim
e0“systemic necrosis disease of corn salad”
e1“olive mild mosaic virus (OMMV)”
e3“OMMV was the most frequently observed virus and causes the most severe symptoms”
Claim · model-written summary
Tobacco necrosis virus A (TNVA) was the second most prevalent and severe necrovirus in corn salad.
- Taxon
- corn salade0
- Interactor
- tobacco necrosis virus A
Tobacco necrosis virus Ae1pathogen - Outcome
- prevalence and symptom severitye4
- Qualifier
- was the seconde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“systemic necrosis disease of corn salad”
e1“tobacco necrosis virus A (TNVA)”
e4“TNVA was the second, both in terms of prevalence and symptom severity”
Claim · model-written summary
Tobacco necrosis virus D (TNVD) was rarely observed in corn salad and caused less severe symptoms.
- Taxon
- corn salade0
- Interactor
- tobacco necrosis virus DTobacco necrosis virus De1pathogen
- Outcome
- less severe symptomse4
- Qualifier
- only rarely observede4
Verbatim
e0“systemic necrosis disease of corn salad”
e1“tobacco necrosis virus D (TNVD)”
e4“TNVD and CSNV were only rarely observed and caused the less severe symptoms”
Claim · model-written summary
Corn salad necrosis virus (CSNV) was rarely observed in corn salad and caused less severe symptoms.
- Taxon
- corn salade0
- Interactor
- corn salad necrosis virusCorn salad necrosis viruse1pathogen
- Outcome
- less severe symptomse4
- Qualifier
- only rarely observede4
Verbatim
e0“systemic necrosis disease of corn salad”
e1“corn salad necrosis virus (CSNV)”
e4“TNVD and CSNV were only rarely observed and caused the less severe symptoms”
Claim · model-written summary
Each of the four necroviruses alone caused systemic necrosis in corn salad, with varying severity.
Verbatim
e0“systemic necrosis disease of corn salad”
e2“Koch's postulates were completed for all four agents, each one alone being able to cause systemic necrosis of varying severity in corn salad”
Claim · model-written summary
Satellite tobacco necrosis virus was frequently observed in corn salad.
- Taxon
- corn salade0
- Interactor
- Satellite tobacco necrosis virusSatellite tobacco mosaic viruse5other
- Outcome
- frequently observede5
Verbatim
e0“systemic necrosis disease of corn salad”
e5“Satellite tobacco necrosis virus was also frequently observed”