Claim · model-written summary
Spraying the same bacterial suspension on onion foliage also produced symptoms.
- Taxon
- onion
Allium cepae0 - Organ / stage
- foliagee0
- Treatment
- the same suspension was sprayede0
- Outcome
- Disease symptoms occurrede0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease symptoms occurred when the same suspension was sprayed on onion foliage.”
Title
First Report of a Leaf Blight of Onion Caused by Xanthomonas spp. in Georgia
F. H. Sanders; D. B. Langston; J. H. Brock; et al. Plant Disease 2003. doi:10.1094/pdis.2003.87.6.749b
Other claims from this paper (14)
- Observation Leaf blight affected Vidalia onion cultivars Pegasus and Sweet Vidalia in separate fields.
- Observation Lesions on onion seedlings progressed from water-soaked tip dieback to whole-leaf blight.
- Observation Onion transplants developed elongated water-soaked lesions that collapsed at the infection point.
- Observation Seedling disease incidence was at least 50% in both fields.
- Association Warm and wet conditions with overhead irrigation likely enhanced disease severity and spread.
- Observation Disease was absent on mature onions after cool, dry conditions arrived.
- Observation The outbreak caused no significant economic loss.
- Observation Xanthomonas was not found in the tested cultivar seed lots.
- Observation Yellow-pigmented Gram-negative rod bacteria were routinely isolated from diseased onion tissue.
- Method / resource Four representative bacterial strains were identified by FAME as a Xanthomonas axonopodis pathovar.
- Observation Known onion Xanthomonas isolates from Colorado and Texas had similar FAME profiles.
- Intervention effect Greenhouse onion plants injected with Georgia Xanthomonas developed symptoms within 4 to 7 days, and the bacterium was reisolated.
- Observation Water-inoculated onion plants showed no symptoms.
- Observation The authors report Xanthomonas leaf blight of Vidalia onions as a first report.