Abstract
The seed transmission of Verticillium dahliae was evaluated in lettuce (Lactuca sativa). Seed collected from lettuce plants infected with V. dahliae were plated with or without surface sterilization on Sorenson's modified NP10 medium. Of the seed plated with or without surface sterilization, 90 and 66%, respectively, yielded colonies of V. dahliae. The incidence of Verticillium wilt ranged from 55 to 80% among lettuce plants grown from seed harvested from infected plants. All evaluated isolates of V. dahliae were capable of seed transmission in lettuce. A V. tricorpus isolate failed to cause significant disease in lettuce or to become seedborne. Storage of contaminated seed at seven temperatures ranging from -20 to 15°C for up to 72 weeks did not reduce the incidence of V. dahliae in seed, whereas storage at room temperature (23 ± 2°C) for 20 to 52 weeks reduced the incidence of V. dahliae without affecting seed viability. Of the 11 weed species collected from fields with a known history of Verticillium wilt of lettuce, four yielded V. dahliae. Pathogenicity tests demonstrated that isolates of V. dahliae from Sonchus oleraceus, Capsella bursa-pastoris, and Solanum sarrachoides were as virulent as or more virulent than an isolate of V. dahliae from lettuce. These results demonstrate the potential of seedborne and weedborne inoculum to disseminate V. dahliae.
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Claims 11
Claim · model-written summary
Surface sterilized infected-plant seed yielded V. dahliae colonies at 90%.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- surface sterilizatione0
- Interactor
- V. dahliae
Verticillium dahliaee0 - Outcome
- colonies of V. dahliaee0
- Value
- 90e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of the seed plated with or without surface sterilization, 90 and 66%, respectively, yielded colonies of V. dahliae”
t0“Weedborne Reservoirs and Seed Transmission of Verticillium dahliae in Lettuce”
Claim · model-written summary
Seed plated without sterilization yielded V. dahliae colonies at 66%.
- Taxon
- lettuceLactuca sativat0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- colonies of V. dahliaee0
- Value
- 66%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of the seed plated with or without surface sterilization, 90 and 66%, respectively, yielded colonies of V. dahliae”
t0“Weedborne Reservoirs and Seed Transmission of Verticillium dahliae in Lettuce”
Claim · model-written summary
Verticillium wilt incidence in plants from infected seed ranged from 55 to 80%.
- Taxon
- lettuceLactuca sativae0
- Organ / stage
- seede0
- Outcome
- incidence of Verticillium wilte0
- Value
- 55 to 80%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incidence of Verticillium wilt ranged from 55 to 80% among lettuce plants grown from seed harvested from infected plants”
Claim · model-written summary
Every evaluated V. dahliae isolate was seed transmitted in lettuce.
- Taxon
- lettuceLactuca sativae0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- seed transmissione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All evaluated isolates of V. dahliae were capable of seed transmission in lettuce”
Claim · model-written summary
V. tricorpus failed to cause significant lettuce disease.
- Taxon
- lettuceLactuca sativae0
- Interactor
- V. tricorpus
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Verticillium tricorpuse0 - Outcome
- failed to cause significant diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“A V. tricorpus isolate failed to cause significant disease in lettuce or to become seedborne”
Claim · model-written summary
V. tricorpus did not become seedborne.
- Taxon
- lettuceLactuca sativae0
- Interactor
- V. tricorpusVerticillium tricorpuse0
- Outcome
- failed to cause significant disease in lettuce or to become seedbornee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A V. tricorpus isolate failed to cause significant disease in lettuce or to become seedborne”
Claim · model-written summary
Cold storage did not reduce seed V. dahliae incidence.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Storage of contaminated seed at seven temperatures ranging from -20 to 15°C for up to 72 weekse0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- incidence of V. dahliae in seede0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage of contaminated seed at seven temperatures ranging from -20 to 15°C for up to 72 weeks did not reduce the incidence of V. dahliae in seed”
t0“Weedborne Reservoirs and Seed Transmission of Verticillium dahliae in Lettuce”
Claim · model-written summary
Room temperature storage reduced seed V. dahliae incidence.
- Taxon
- lettuceLactuca sativat0
- Treatment
- storage at room temperature (23 ± 2°C) for 20 to 52 weekse0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- incidence of V. dahliaee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“storage at room temperature (23 ± 2°C) for 20 to 52 weeks reduced the incidence of V. dahliae without affecting seed viability”
t0“Weedborne Reservoirs and Seed Transmission of Verticillium dahliae in Lettuce”
Claim · model-written summary
Room temperature storage did not affect seed viability.
- Taxon
- lettuceLactuca sativat0
- Treatment
- storage at room temperature (23 ± 2°C) for 20 to 52 weekse0
- Outcome
- seed viabilitye0
- Direction
- without affectinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“storage at room temperature (23 ± 2°C) for 20 to 52 weeks reduced the incidence of V. dahliae without affecting seed viability”
t0“Weedborne Reservoirs and Seed Transmission of Verticillium dahliae in Lettuce”
Claim · model-written summary
Four of 11 sampled weed species yielded V. dahliae.
- Taxon
- lettuceLactuca sativae0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- four yielded V. dahliaee0
- Value
- foure0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of the 11 weed species collected from fields with a known history of Verticillium wilt of lettuce, four yielded V. dahliae”
Claim · model-written summary
Weed isolates of V. dahliae were at least as virulent as a lettuce isolate.
- Taxon
- lettuceLactuca sativae0
- Interactor
- V. dahliaeVerticillium dahliaee0
- Outcome
- as virulent as or more virulente0
- Comparator
- an isolate of V. dahliae from lettucee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolates of V. dahliae from Sonchus oleraceus, Capsella bursa-pastoris, and Solanum sarrachoides were as virulent as or more virulent than an isolate of V. dahliae from lettuce”
The same questions in other papers
storage · growth · Lactuca sativa (garden lettuce)Positive and negative results
5 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.