Claim · model-written summary
Submerged Isoetes howellii leaves took up net CO2 in both light and dark
- Taxon
- Isoetes howellii
Isoetes howelliie0 - Organ / stage
- submerged leavese1
- Outcome
- net CO(2) uptakee1
- Qualifier
- in both light and darke1
Verbatim
e0“The submerged aquatic plant Isoetes howellii Engelmann possesses Crassulacean acid metabolism (CAM) comparable to that known from terrestrial CAM plants”
e1“Infrared gas analysis of submerged leaves showed Isoetes was capable of net CO(2) uptake in both light and dark. CO(2) uptake rates were a function of CO(2) levels in the medium”
Title
Jon E. Keeley; George Bowes PLANT PHYSIOLOGY 1982. doi:10.1104/pp.70.5.1455
Other claims from this paper (9)
- Association Dark CO2 uptake rates of Isoetes howellii were a function of CO2 levels in the medium
- Observation At 2,500 microliters CO2 per liter, Isoetes leaves showed continuous CO2 uptake in both light and dark
- Observation Photosynthetic rates of Isoetes howellii were light saturated at about 10% full sunlight
- Association Photosynthetic rates of Isoetes howellii were about 3-fold greater than dark CO2 uptake rates
- Association Dark CO2 uptake rates of Isoetes howellii declined during the night period at both CO2 levels
- Association At the higher CO2 level, dark CO2 uptake rates of Isoetes howellii at 0600 h were 75% lower than at 1800 h
- Observation At 500 microliters CO2 per liter, net CO2 uptake in the dark at 1800 h was replaced by net CO2 evolution in the dark at 0600 h
- Observation The overnight decline in net CO2 uptake of Isoetes howellii was marked by periodic bursts of accelerated CO2 uptake
- Intervention effect CO2 uptake in the light of Isoetes howellii leaves was similar at 1% and 21% O2, in intact and split leaves