Claim · model-written summary
Illumination photoinactivated 50% of IAA in the IAA-H2O mixture.
- Taxon
- HELIANTHUS ANNUUS
Helianthus annuust0 - Treatment
- illumination (with 1,500 lux light, lasting for 24 hr)e2
- Outcome
- photoinactivation of IAAe2
- Value
- 50%e2
- Qualifier
- IAA-H2Oe2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“INVESTIGATIONS ON AUXIN-GIBBERELLIN INTERACTION ON THE PHOTOTROPISM OF HELIANTHUS ANNUUS HYPOCOTYL”
e2“the illumination (with 1,500 lux light, lasting for 24 hr) caused photoinactivation of IAA in the mixtures of IAA-H2O, IAA-GB and IAA-NAA by 50%, 24% and 0%, respectively”
Title
INVESTIGATIONS ON AUXIN-GIBBERELLIN INTERACTION ON THE PHOTOTROPISM OF HELIANTHUS ANNUUS HYPOCOTYL
METIN BARA; MÜRÜVVET HASMAN Plant and Cell Physiology 1963. doi:10.1093/oxfordjournals.pcp.a078988
Other claims from this paper (9)
- Intervention effect IAA-GB mixture increased the phototropic response of Helianthus annuus hypocotyls compared with IAA-H2O only.
- Intervention effect IAA-NAA mixture decreased the phototropic response of Helianthus annuus hypocotyls compared with IAA-H2O only.
- Observation Illumination photoinactivated 24% of IAA in the IAA-GB mixture.
- Observation Illumination photoinactivated no IAA (0%) in the IAA-NAA mixture.
- Observation With riboflavin as photosensitizer, illumination destroyed 92% of IAA in the IAA-H2O mixture.
- Observation With riboflavin as photosensitizer, illumination destroyed 97% of IAA in the IAA-GB mixture.
- Observation With riboflavin as photosensitizer, illumination destroyed 86% of IAA in the IAA-NAA mixture.
- Mechanism The stronger positive phototropism of IAA-GB treated hypocotyls is explained by GB accelerating IAA photoinactivation on the illuminated side and acting synergistically with IAA on the shaded side.
- Mechanism The weaker phototropism of IAA-NAA treated hypocotyls is explained by a partial inhibition of IAA photoinactivation by NAA.