Abstract
Summary Five pathotypes of the willow rust Melamspora larici‐epitea were inoculated with 12 isolates of Sphaerellopsis filum derived from Melampsora species/forms occurring on willows. On average, 20.5% uredinial pustules produced S. filum pycnidia and rust spore production was reduced by 38.4% on leaf discs inoculated with S. filum . Some rust isolates were more readily infected by S. filum than others while some S. filum isolates caused higher levels of infections than other S. filum isolates. In general, the suppressive effects of these S. filum isolates on rust spore production were similar on the majority of rust pathotypes tested. There appeared to be a positive link between the rust pustule area and the rate of infection by S. filum. Sphaerellopsis filum inoculum densities were positively correlated with the reduction in rust spore production but not with the number of rust pustules. Implications from the results were discussed in relation to the deployment of S. filum in biological control of willow rust in willow mixture plantations which harbour more diverse rust pathotypes compared with monocultures.
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Claims 8
Claim · model-written summary
On average 20.5% of rust uredinial pustules produced S. filum pycnidia.
- Interactor
- S. filum
Sphaerellopsis filume0biocontrol_agent - Outcome
- uredinial pustules produced S. filum pycnidiae0
- Value
- 20.5%e0
SalixOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On average, 20.5% uredinial pustules produced S. filum pycnidia”
e1“willows”
Claim · model-written summary
S. filum inoculation reduced rust spore production on leaf discs by 38.4%.
- Treatment
- inoculated with S. filume0
- Interactor
- Melamspora larici‐epiteae2pathogen
- Second interactor
- S. filumSphaerellopsis filume0biocontrol_agent
- Outcome
- rust spore productione0
- Direction
- reducede0
- Value
- 38.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rust spore production was reduced by 38.4% on leaf discs inoculated with S. filum”
e1“willows”
e2“willow rust Melamspora larici‐epitea”
Claim · model-written summary
Rust isolates varied in susceptibility to S. filum infection.
- Interactor
- ruste0pathogen
- Second interactor
- S. filumSphaerellopsis filume0biocontrol_agent
- Outcome
- rust isolates were more readily infectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some rust isolates were more readily infected by S. filum than others”
e1“willows”
Claim · model-written summary
S. filum isolates differed in their infection levels.
- Interactor
- S. filumSphaerellopsis filume0biocontrol_agent
- Outcome
- higher levels of infectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some S. filum isolates caused higher levels of infections than other S. filum isolates”
e1“willows”
Claim · model-written summary
Most rust pathotypes showed similar spore suppression from S. filum isolates.
- Interactor
- ruste0pathogen
- Second interactor
- S. filumSphaerellopsis filume0biocontrol_agent
- Outcome
- rust spore production were similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the suppressive effects of these S. filum isolates on rust spore production were similar on the majority of rust pathotypes tested”
e1“willows”
Claim · model-written summary
Larger rust pustule area appeared positively linked to S. filum infection rate.
- Interactor
- S. filumSphaerellopsis filume0biocontrol_agent
- Outcome
- rate of infection by S. filume0
- Direction
- positive linke0
- Qualifier
- rust pustule areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There appeared to be a positive link between the rust pustule area and the rate of infection by S. filum.”
e1“willows”
Claim · model-written summary
S. filum inoculum density positively correlated with reduced rust spore production.
- Interactor
- Sphaerellopsis filumSphaerellopsis filume0biocontrol_agent
- Outcome
- reduction in rust spore productione0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sphaerellopsis filum inoculum densities were positively correlated with the reduction in rust spore production”
e1“willows”
Claim · model-written summary
S. filum inoculum density was not correlated with rust pustule number.
- Interactor
- Sphaerellopsis filumSphaerellopsis filume0biocontrol_agent
- Outcome
- number of rust pustulese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sphaerellopsis filum inoculum densities were positively correlated with the reduction in rust spore production but not with the number of rust pustules.”
e1“willows”
The same questions in other papers
inoculation · disease · Salix (willows)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.