By interacting organism › Fungi › Melampsoraceae › Melampsora occidentalis

Observationobservedoriginal resultmeasured

Claim · model-written summary

Mean rust uredospore production was 650 spores per disk per day.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: uredospore productione0
Value: 650 spores/disk/daye0

Verbatim

e0
“The overall average uredospore production during the time from inoculation to twice the latent period was 650 spores/disk/day”
✓ located verbatim in the source · abstract, characters 357–482

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Rust latent period ranged from 6 to 12 days.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: Latent periode0
Value: 6 to 12 dayse0

Verbatim

e0
“Latent period ranged from 6 to 12 days with a median at 8 days”
✓ located verbatim in the source · abstract, characters 484–546

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Median rust latent period was 8 days.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: Latent periode0
Value: 8 dayse0

Verbatim

e0
“Latent period ranged from 6 to 12 days with a median at 8 days”
✓ located verbatim in the source · abstract, characters 484–546

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Cottonwood clones differed significantly in their contributions to rust spore production.

Taxon: black cottonwoodPopulus trichocarpae1
Material: Clonese0
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: spore production ratese0
Direction: differede0

Verbatim

e0
“Clones as well as isolates differed significantly in their contributions to spore production rates”
✓ located verbatim in the source · abstract, characters 548–646

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Rust isolates differed significantly in their contributions to spore production.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: spore production ratese0
Direction: differede0

Verbatim

e0
“Clones as well as isolates differed significantly in their contributions to spore production rates”
✓ located verbatim in the source · abstract, characters 548–646

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

The test found no indication of clone-by-isolate differential interaction.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: no indication of specific differential interactione0

Verbatim

e0
“there was no indication of specific differential interaction”
✓ located verbatim in the source · abstract, characters 654–714

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

The absence of qualitative resistance and virulence suggests qualitative interactions play a limited role in this pathosystem.

Taxon: black cottonwoodPopulus trichocarpae1
Interactor: Melampsora rust (M. occidentalis)Melampsora occidentalise1pathogen
Outcome: qualitative interactions do not play a major role in diseasee0

Verbatim

e0
“The lack of qualitative resistance and virulence indicates that qualitative interactions do not play a major role in disease in this natural pathosystem”
✓ located verbatim in the source · abstract, characters 716–868

e1
“black cottonwood (Populus trichocarpa) by ten isolates of Melampsora rust (M. occidentalis)”
✓ located verbatim in the source · abstract, characters 101–192

Title

Variation in resistance and virulence in the disease interaction between Melampsora rust (M. occidentalis) and black cottonwood (Populus trichocarpa)

Hsiang, Tom cIRcle (University of British Columbia) 2010. doi:10.14288/1.0075412

Other claims from this paper (7)

Observation Mean rust uredospore production was 650 spores per disk per day.
Observation Rust latent period ranged from 6 to 12 days.
Observation Median rust latent period was 8 days.
Association Cottonwood clones differed significantly in their contributions to rust spore production.
Association Rust isolates differed significantly in their contributions to spore production.
Observation The test found no indication of clone-by-isolate differential interaction.
Observation The authors expect black cottonwood resistance to remain effective when used in plantations.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Melampsora occidentalis infected 89% of northern trees.

Taxon: treese0
Interactor: M. occidentalisMelampsora occidentalise0pathogen
Outcome: infectede0
Value: 89%e0
Setting: northern regione0

Verbatim

e0
“Valsa sordida and M. occidentalis infected 41% and 89%, respectively, of the trees from the northern region”
✓ located verbatim in the source · abstract, characters 585–692

Title

Ecotypic mode of regional differentiation caused by restricted gene migration: a case in black cottonwood (Populus trichocarpa) along the Pacific Northwest coast

Chang-Yi Xie; Cheng C. Ying; Alvin D. Yanchuk; et al. Canadian Journal of Forest Research 2009. doi:10.1139/x08-190

Other claims from this paper (13)

Observation Cottonwood showed north–south ecotypic differentiation.
Observation Valsa sordida infected 41% of northern trees.
Observation Flushing abnormality affected 66% of northern trees.
Observation Valsa sordida infected 1% of southern trees.
Observation Melampsora occidentalis infected 27% of southern trees.
Observation Abnormal flushing affected 1% of southern trees.
Observation Northern trees averaged 87% shorter than southern trees.
Association Regional differentiation explained 60% of three-year height variation.
Association Regional differentiation explained 34% of Valsa sordida infection variation.
Association Regional differentiation explained 76% of Melampsora occidentalis infection variation.
Association Regional differentiation explained 50% of abnormal leaf flushing variation.
Observation Regression revealed geographic patterns following the no-cottonwood belt.
Mechanism Restricted gene migration was proposed as the main cause of geographic genetic differentiation.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Foliage saprophytes affected rust infection in cottonwood clones.

Taxon: Populus trichocarpaPopulus trichocarpae0
Interactor: Melampsora occidentalisMelampsora occidentalise0pathogen
Second interactor: Saprophytic microorganismse0biocontrol_agent
Outcome: extent of infectione0

Not reportedDirection

Verbatim

e0
“Saprophytic microorganisms associated with healthy foliage of Populus trichocarpa Torrey and Gray affected the extent of infection of clonal material by the rust fungus Melampsora occidentalis Jacks”
✓ located verbatim in the source · abstract, characters 0–198

Title

SOME EFFECTS OF FOLIAGE SAPROPHYTES IN THE CONTROL OF MELAMPSORA LEAF RUST ON BLACK COTTONWOOD

John E. Bier The Forestry Chronicle 1965. doi:10.5558/tfc41306-3

Other claims from this paper (4)

Intervention effect Removing foliage saprophytes caused heavy pathogen infection.
Intervention effect Applying saprophyte suspensions significantly controlled cottonwood rust in the laboratory and field.
Association Clonal microbiological types may differ in rust resistance.
Intervention effect Saprophyte suspensions appeared to stimulate healthy leaf rooting.

Observationobservedoriginal resultmeasured

Claim · model-written summary

M. occidentalis infected ponderosa pine.

Taxon: ponderosae0
Interactor: Melampsora occidentalis Jacks.Melampsora occidentalise0pathogen
Outcome: able to infect ponderosa and lodgepole pinese0

Not reportedDirection

Verbatim

e0
“Melampsora occidentalis Jacks. was shown to be able to infect ponderosa and lodgepole pines as well as its previously known host, Douglas fir”
✓ located verbatim in the source · abstract, characters 564–705

Title

MELAMPSORA INFECTION OF PINE IN BRITISH COLUMBIA

A. C. Molnar; B. Sivak Canadian Journal of Botany 1964. doi:10.1139/b64-016

Other claims from this paper (8)

Observation Rust infecting ponderosa pine at Telkwa was identified as M. albertensis.
Observation Lodgepole pine was susceptible to M. albertensis rust.
Observation Jack pine was susceptible to M. albertensis rust.
Observation Red pine was susceptible to M. albertensis rust.
Observation Scots pine was susceptible to M. albertensis rust.
Observation M. occidentalis infected lodgepole pine.
Observation Only current-year germinants and shoots of young pines appeared susceptible.
Observation The authors considered the rust no special current hazard to pine in British Columbia.

Melampsora occidentalis 11 claims

11 claims