Claim · model-written summary
The growth response to low IAA increased two to threefold in the first three hours.
Zea maysVerbatim
e0“a 2- to 3-fold increase in the magnitude of the growth response to low levels of IAA and a 3-fold decrease in the latent period of the response during the first 3 hours following excision”
t0“corn (Zea mays L.)”
Title
Time-dependent Changes in the Auxin Sensitivity of Coleoptile Segments
Mary Jo Vesper; Michael L. Evans PLANT PHYSIOLOGY 1978. doi:10.1104/pp.61.2.204
Other claims from this paper (8)
- Observation Excised corn coleoptiles had low elongation for about 3.5 hours.
- Observation Growth rate then increased strongly and persisted for many hours.
- Association Sensitivity to IAA increased over the latent period.
- Association The response latency decreased threefold in the first three hours.
- Association Sensitivity to low IAA rose after an earlier hormone exposure ended.
- Observation IAA uptake rate did not rise with responsiveness.
- Association IAA dose response changed with time.
- Mechanism An auxin dependent inhibitor may influence sensory adaptation.