Claim · model-written summary
Only ascorbate peroxidase activity was inhibited at the two low water potentials.
- Taxon
- Alvaradoa amorphoides
Alvaradoa amorphoidest0 - Treatment
- these two water potentialse1
- Outcome
- ascorbate peroxidase activitye1
- Direction
- inhibitede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Only ascorbate peroxidase activity was inhibited at these two water potentials”
t0“Alvaradoa amorphoides”
Title
Alvaradoa amorphoides germination at low water potential and the role of the antioxidant system
Verónica Hernández-Pérez; Judith Márquez Guzmán; Sobeida Sánchez-Nieto; et al. Botanical Sciences 2015. doi:10.17129/botsci.61
Other claims from this paper (12)
- Observation In the field, A. amorphoides seeds had an overall mean germination rate of 42%.
- Observation In the field, the germination rate of A. amorphoides varied between sites independent of soil relative humidity and landscape.
- Intervention effect A. amorphoides seeds exposed to a water potential of -0.5 MPa showed delayed germination.
- Intervention effect At a water potential of -1.0 MPa germination of A. amorphoides seeds was inhibited by 80%.
- Intervention effect At a water potential of -1.5 MPa germination of A. amorphoides seeds was inhibited by 100%.
- Observation Seeds exposed to the inhibiting water potentials remained viable.
- Observation Oxygen consumption of the seeds did not differ between the water potential treatments.
- Observation Respiration profiles of the treated seeds did not show the same triphasic curve as the control.
- Intervention effect H2O2 and O2- levels in the seeds were not significantly different at the low water potentials of -0.5 and -1.0 MPa.
- Intervention effect Catalase, superoxide dismutase and glutathione reductase activities in the seeds were not significantly different at the low water potentials of -0.5 and -1.0 MPa.
- Observation A. amorphoides seeds remained in phase II during low water potentials without high levels of reactive oxygen species production.
- Mechanism The authors suggest that the seeds continuing to be viable might explain the low influence of humidity and landscape on field germination.