Claim · model-written summary
Black walnut mortality results from an expanded range of the walnut twig beetle, its aggressive feeding, and cankering by Geosmithia.
- Taxon
- black walnut
Juglans nigrae1 - Interactor
- GeosmithiaGeosmithiae1pathogen
- Second interactor
- Pityophthorus juglandisPityophthorus juglandise1pest
- Outcome
- mortalitye1
Not reportedMaterialGeneCompoundOrgan / stageTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“this mortality is the result of a combination of an expanded geographic range of the walnut twig beetle (Pityophthorus juglandis), its aggressive feeding behavior on black walnut, and extensive cankering caused by a filamentous ascomycete in the genus Geosmithia”
Title
Utley, Curtis; Tisserat, Ned; Cranshaw, Whitney; et al. Digital Collections of Colorado (Colorado State University) 2007. doi:10.25675/3.022061
Other claims from this paper (8)
- Observation Thirty-seven Geosmithia strains from four Juglans species in eight USA states belonged to a single species, G. morbida.
- Observation G. morbida is the first Geosmithia species documented as a plant pathogen of walnut.
- Observation Carya illinoinensis, C. aquatica and C. ovata were immune to G. morbida.
- Intervention effect All walnut species tested developed cankers following inoculation with G. morbida.
- Association Juglans nigra had the largest cankers among the tested walnuts, larger than J. major.
- Association Juglans major had smaller and more superficial cankers than J. nigra.
- Association Canker size differed among maternal half-sibling families of J. nigra and J. cinerea, indicating genetic variability in resistance to G. morbida.
- Mechanism The ability of the walnut twig beetle to attack and breed in walnuts is an important component of thousand cankers disease resistance.