Claim · model-written summary
PAL induction was suggested to coincide with seed germination.
- Taxon
- lettuce
Lactuca sativae0 - Organ / stage
- seedse0
- Outcome
- induction of PALe0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is suggested that the induction of PAL in light‐sensitive lettuce seeds is coincidental with the germination of seeds, and the amount of PAL per germinated seed is related to the extent of elongation of the embryonic axes.”
Title
Induction of phenylalanine ammonia‐lyase (PAL) in germinating lettuce seeds (Lactuca sativa)
Richard J. Daines; Subhash C. Minocha; G. Jose Kudakasseril Physiologia Plantarum 1983. doi:10.1111/j.1399-3054.1983.tb06584.x
Other claims from this paper (18)
- Observation Dry lettuce seeds had no detectable PAL activity.
- Observation PAL became detectable within 4 hours of imbibition under white light.
- Observation PAL specific activity increased rapidly over the next 12–16 hours.
- Intervention effect Far-red light suppressed germination.
- Intervention effect Far-red light suppressed PAL development.
- Intervention effect GA3 caused almost complete dark germination without proportionate PAL increase.
- Intervention effect GA3 did not induce proportionate increases in PAL.
- Intervention effect CHDC inhibited germination in light and dark.
- Intervention effect CHDC inhibited PAL activity in light and dark.
- Intervention effect GA3 retarded radicle elongation in light.
- Intervention effect Benzyladenine retarded radicle elongation in light.
- Observation PAL activity declined concurrently.
- Intervention effect Benzyladenine reversed CHDC effects on germination.
- Intervention effect PAL activity remained highly reduced with benzyladenine after CHDC.
- Observation More than 95% of extractable PAL was in the radicle.
- Intervention effect Transfer from white light to far red severely inhibited subsequent PAL increase.
- Intervention effect Transfer from white light to far red severely inhibited radicle growth.
- Association PAL amount per germinated seed was related to embryonic axis elongation.