Claim · model-written summary
NaCl significantly reduced the amount of pH 5.0 invertase.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Treatment
- NaCl treatmentse0
- Outcome
- amount of the pH 5.0 enzymee0
- Direction
- lowere0
- Comparator
- 0, 20 and 50 mM NaCle1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of the pH 5.0 enzyme was significantly lower in the NaCl treatments”
e1“plants grown on 0, 20 and 50 mM NaCl”
t0“Phaseolus vulgaris”
Title
Invertase From Leaves of Phaseolus vulgaris Plants Grown on Nutrient Solutions Containing NaCl
JS Hawker Australian Journal of Plant Physiology 1980. doi:10.1071/pp9800067
Other claims from this paper (8)
- Observation Two leaf invertases have pH optima near 5.0 and 7.5.
- Intervention effect Tris-HCl buffer inhibited the pH 5.0 invertase by 7%.
- Intervention effect Tris-HCl buffer inhibited the pH 7.5 invertase by 90%.
- Intervention effect NaCl did not significantly affect the amount of pH 7.5 invertase.
- Observation The pH 5.0 invertase had a sucrose Km of about 7.5 mM.
- Observation The pH 7.5 invertase had a sucrose Km of about 27 mM.
- Intervention effect NaCl treatment did not alter sucrose Km values of either invertase.
- Observation The previously reported NaCl-induced rise in Km at pH 5.0 was likely an artefact.