Claim · model-written summary
H. seropedicae-inoculated sorghum had no disease or only very mild symptoms near the inoculation point.
- Taxon
- Sorghum bicolor
Sorghum bicolort0 - Treatment
- inoculated with H. seropedicaee0
- Interactor
- H. seropedicaeHerbaspirillum seropedicaee0symbiont
- Outcome
- either did not express the disease or showed very mild symptomse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants inoculated with H. seropedicae either did not express the disease or showed very mild symptoms close to the inoculation point.”
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 sorghum disease symptoms were slightly more severe.
- 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.
- 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.