Claim · model-written summary
NADH increased activity in an enzyme preparation containing intact organelles.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With an enzymic preparation that contained intact organelles the increase of activity could also be produced by NADH”
t0“maize leaves”
Title
Dependence of starch synthase activity from maize leaves on light, pH and redox state.
G H Wieweg; M A de Fekete PubMed 1976
Other claims from this paper (13)
- Observation Starch synthase activity is low in darkened plants and rises with illumination.
- Intervention effect Malate in darkness increased starch synthase activity in leaf strips.
- Intervention effect Light did not increase activity in isolated bundle sheath cells.
- Intervention effect Malate did not increase activity in isolated bundle sheath cells.
- Intervention effect Acidification reduced starch synthase activity.
- Intervention effect DCPIP reduced starch synthase activity.
- Intervention effect Acidification caused a larger activity decrease in enzymes from darkened than illuminated plants.
- Intervention effect Benzoquinone, DOPA and caffeic acid inhibited synthase activity.
- Intervention effect TMPD, Fe (CN6) 3- and PCMB inhibited synthase activity.
- Intervention effect DTE increased synthase activity.
- Intervention effect DTE restored activity after PCMB pretreatment.
- Intervention effect DTE did not restore activity after DCPIP pretreatment.
- Mechanism The authors attribute low dark-period synthase activity to acidification and oxidizing substances.