Claim · model-written summary
At fourteen days sorghum disease symptoms were slightly more severe.
- Taxon
- Sorghum bicolor
Sorghum bicolort0 - Interactor
- H. rubrisubalbicansHerbaspirillum rubrisubalbicanse1pathogen
- Outcome
- disease symptomse0
- Direction
- slightly more severee0
- Qualifier
- At 14 d after inoculatione0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 14 d after inoculation, disease symptoms were slightly more severe, with both meta- and protoxylem being even more heavily colonized in parts of the leaf showing red stripes.”
e1“H. rubrisubalbicans-specific antibodies”
t0“Sorghum bicolor”
Title
Euan K. James; Fábio Lopes Olivares; José Ivo Baldani; et al. Journal of Experimental Botany 1997
Other claims from this paper (13)
- Intervention effect H. rubrisubalbicans inoculation caused red stripe disease symptoms spreading along sorghum leaf veins.
- Observation At five days, symptomatic sorghum leaf regions showed dense H. rubrisubalbicans colonization.
- Observation The infection was confined to sorghum vascular tissue, particularly protoxylem and lacunae often filled with bacteria.
- Observation Some colonizing H. rubrisubalbicans bacteria expressed nitrogenase.
- Method / resource Specific antibodies and immunogold labelling recognized H. rubrisubalbicans and detected antibody-reactive surface material.
- Observation Bacterial surface mucus was released into the sorghum xylem lumen.
- Observation At fourteen days both meta- and protoxylem in symptomatic sorghum leaves were more heavily colonized.
- Observation Sorghum showed a strong host defence response with gums lining vessels and enclosing bacteria at fourteen days.
- Observation H. rubrisubalbicans remained actively dividing despite the host defence response.
- Observation At symptom edges, sorghum gums filled xylem and enclosed distinct bacterial colonies, some associated with xylem walls.
- Intervention effect H. seropedicae-inoculated sorghum had no disease or only very mild symptoms near the inoculation point.
- Observation In mildly symptomatic sorghum, H. seropedicae occupied protoxylem vessels and metaxylem was partly occluded by plant gums.
- Observation At fourteen days H. seropedicae also colonized symptomless sorghum leaves without consistently eliciting a host response, leaving vessels unoccluded and largely gum-free.