C3 and CAM Photosynthetic Characteristics of the Submerged Aquatic Macrophyte Littorella uniflora: Regulation of Leaf Internal CO2 Supply in Response to Variation in Rooting Substrate Inorganic Carbon Concentration

@article{Robe1988C3AC,
  title={C3 and CAM Photosynthetic Characteristics of the Submerged Aquatic Macrophyte Littorella uniflora: Regulation of Leaf Internal CO2 Supply in Response to Variation in Rooting Substrate Inorganic Carbon Concentration},
  author={Wendy E. Robe and Howard Griffiths},
  journal={Journal of Experimental Botany},
  year={1988},
  volume={39},
  pages={1397-1410}
}
  • W. Robe, H. Griffiths
  • Published 1 October 1988
  • Environmental Science
  • Journal of Experimental Botany
Robe, W. E. and Griffiths, H. 1988. C3 and CAM photosynthetic characteristics of the submerged aquatic macrophyte Littorella uniflora: regulation of leaf internal C02 supply in response to variation in rooting substrate inorganic carbon concentration.--J. exp. Bot. 39: 1397-1410. The relationships between C02 concentrating mechanisms, photosynthetic efficiency and inorganic carbon supply have been investigated for the aquatic macrophyte Littorella uniflora. Plants were obtained from Esthwaite… 
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TLDR
The findings suggest that L. uniflora is not growth limited by low NOinf3sup−supply in natural oligotophic habitats, due not to an efficient photosynthetic nitrogen use but to a slow growth rate, a low N requirement and to the use of storage to avoid N stress.
Physiological and photosynthetic plasticity in the amphibious, freshwater plant, Littorella uniflora, during the transition from aquatic to dry terrestrial environments
TLDR
Overall, L. uniflora showed considerable phenotypic plasticity, yet seemed to remain poised for resubmersion; these characteristics could be adaptive in the unpredictable water margin habitat.
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References

SHOWING 1-10 OF 25 REFERENCES
Sources of Inorganic Carbon Acquired through CAM in Littorella uniflora (L.) Aschers
Madsen, T. V. 1987. Sources of inorganic carbon acquired through CAM in Littorella uniflora (L.) Aschers.—J. exp. Bot. 38: 367-377. The C02 dynamics of the lacunal air and the relative contribution
INTERACTIONS BETWEEN INTERNAL AND EXTERNAL CO2 POOLS IN THE PHOTOSYNTHESIS OF THE AQUATIC CAM PLANTS LITTORELLA UNIFLORA (L.) ASCHERS AND ISOETES LACUSTRIS L.
Summary The significance of CAM as a carbon-conserving mechanism in two submerged aquatics, Littorella uniflora (L.) Aschers and hoetes lacustris L., was evaluated by determining (1) the loss of
The role of CO2 uptake by roots and CAM in acquisition of inorganic C by plants of the isoetid life-form: a review, with new data on Eriocaulon decangulare L.
TLDR
The work described here shows that submerged specimens of the North American Eriocaulon decangulare have a high fraction of their dry weight in the root system, a trait characteristic of isoetids but uncommon in other submerged vascular plants.
Utilization of Sediment CO2 by Selected North American Isoetids
The photosynthetic uptake of root-zone CO2 was determined for Eriocaulon septangulare, Gratiola aurea, Isoetes macrospora, Littorella uniflora var. americana and Lobelia dortmanna as part of a study
PHOTOSYNTHETIC INORGANIC CARBON USE BY FRESHWATER PLANTS
TLDR
A pH-drift technique was used to calculate free CO2 (CO2) and bicarbonate (HCO ) compensation points for a range of freshwater macrophytes and phytoplankters, and species showed a fairly continuous range in uptake ability with a nearly fifteen-fold difference between the most efficient and least efficient species.
Gas Exchange Characteristics of the Submerged Aquatic Crassulacean Acid Metabolism Plant, Isoetes howellii.
The submerged aquatic plant Isoetes howellii Engelmann possesses Crassulacean acid metabolism (CAM) comparable to that known from terrestrial CAM plants. Infrared gas analysis of submerged leaves
The utilization of bicarbonate ions by the macroalga Ascophyllum nodosum (L.) Le Jolis
TLDR
Calculating the total inorganic carbon concentration from pH measurements and acidification CO2 determinations revealed that the assumption that the alkalinity remains constant during pH drift experiments is not always valid.
Phytoplankton and Epiphyte Development and Their Shading Effect on Submerged Macrophytes in Lakes of Different Nutrient Status
The annual mean light intensity at the depth limit of the Littorella vegetation was 24–33% of the subsurface light intensity, despite large variations in each attenuation component (lake water,
Functional Significance of Different Pathways of CO 2 Fixation in Photosynthesis
TLDR
The functional significance of different photosynthetic CO2 fixation pathways is a question which can be answered in many ways, each being appropriate to certain scales of enquiry, and how photosynthesis contributes, directly or indirectly, to performance and survival of plants in diverse habitats is shown.
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