Claim · model-written summary
A. japonica did not form knobs after antibiotic or heat treatment.
Not reportedComparatorDirection
Verbatim
e0“theA. japonica which is closely affined to them and non-leaf-nodular plant, knobs are never formed either by antibiotics or by heat treatment”
Title
Tamotsu YAMADA Shokubutsugaku Zasshi 1955. doi:10.15281/jplantres1887.68.267
Other claims from this paper (8)
- Intervention effect Antibiotics induced knobs and stopped growth in A. crispa seedlings.
- Intervention effect Antibiotics induced knobs and stopped growth in A. punctata seedlings.
- Association Knob formation increased with antibiotic concentration and treatment duration.
- Observation A. crispa had a higher knob-forming ratio than A. punctata under the same treatment.
- Observation A. crispa knobs were larger than those of A. punctata.
- Observation Knobs contained epidermis, cortex and central cylinder, with no meristem or leaf-nodule-bacteria detected.
- Observation Knob structure resembled that after heat treatment.
- Mechanism The authors proposed that a substance secreted by dying leaf-nodule bacteria induces knob formation and may contribute to leaf nodules.