Claim · model-written summary
Leaves grown under nonsaline conditions developed a low degree of CAM activity with advancing age.
- Taxon
- Mesembryanthemum crystallinum
Mesembryanthemum crystallinume0 - Outcome
- CAM activitye5
- Value
- low degree of CAM activitye5
- Setting
- nonsaline conditionse5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Simultaneous measurements of net CO(2) exchange, water vapor exchange, and leaf water relations were performed in Mesembryanthemum crystallinum during the development of crassulacean acid metabolism (CAM) in response to high NaCl salinity in the rooting medium”
e5“With advancing age, leaves of plants grown under nonsaline conditions exhibited progressively greater diurnal reductions in turgor pressure and developed a low degree of CAM activity”
Title
Klaus Winter; Rolf Gademann PLANT PHYSIOLOGY 1991. doi:10.1104/pp.95.3.768
Other claims from this paper (9)
- Intervention effect Leaf water content and turgor pressure decreased by as much as 30% and 60% during the photoperiods under NaCl.
- Intervention effect Net carbon gain during photoperiods and average intercellular CO2 partial pressures progressively decreased upon salinization.
- Association Reversible diurnal depressions in leaf conductance and net CO2 uptake preceded nocturnal net CO2 uptake.
- Association During the depressions, intercellular CO2 partial pressure and rates of photosynthetic electron transport decreased.
- Association With advancing age, leaves under nonsaline conditions showed progressively greater diurnal reductions in turgor pressure.
- Intervention effect After several days at 400 millimolar NaCl, overall turgor pressure and leaf mass per unit area increased above the levels before the salt treatment.
- Intervention effect Under 400 millimolar NaCl, diurnal alterations in leaf water content were reduced.
- Observation Water content and turgor pressure regularly decreased toward the end of the 12 hour light periods in plants grown under nonsaline conditions.
- Mechanism Transient decreases in leaf water content probably triggered induction of the biochemical machinery required for CAM.