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Ecophysiology of Crassulacean Acid Metabolism (CAM).
  • U. Lüttge
  • Medicine, Biology
    Annals of botany
  • 1 June 2004
Examination of quantitative census data for CAM diversity and biomass suggests that the larger CAM domains are those systems which are governed by a network of interacting stress factors requiring versatile responses and not systems where a single stress factor strongly prevails.
Evaluation of instant light-response curves of chlorophyll fluorescence parameters obtained with a portable chlorophyll fluorometer on site in the field
Miniaturized pulse-amplitude modulated photosynthesis yield analysers are primarily designed for measuring effective quantum yield (ΔF/Fm′) of photosystem II under momentary ambient light conditions
Effects of salt treatment and osmotic stress on V-ATPase and V-PPase in leaves of the halophyte Suaeda salsa.
The main strategy of salt-tolerance of S. salsa seems to be an up-regulation of V-ATPase activity, which is required to energize the tonoplast for ion uptake into the vacuole, while V-PPase plays only a minor role.
Vacuolar malate uptake is mediated by an anion-selective inward rectifier.
The macroscopic current densities recorded at physiological voltages and the estimated channel density of 0.2 microm-2 are sufficient to account for the observed rates of nocturnal malic acid accumulation in this CAM plant, suggesting that the 3-pS, inward-rectifying, anion-selective channel represents the principal pathway for malate influx into the vacuole.
Specific regulation of SOD isoforms by NaCl and osmotic stress in leaves of the C3 halophyte Suaeda salsa L.
It turned out that NaCl salinity and osmotic stress lead to a differential regulation of distinct SOD isoenzymes, which is suggested to play a major role in stress tolerance of S. salsa.
Midday depression in savanna trees: coordinated adjustments in photochemical efficiency, photorespiration, CO2 assimilation and water use efficiency
An efficient control of photochemical and non-photochemical quenching and adjustments in the partition of electron flow between assimilative andnon-assimilative processes alleviated the danger of photoinhibition, but the results suggest that losses in potential carbon gain because of high photorespiratory costs could impose strong limitations on leaf carbon balance of cerrado woody species.
European plants with C4 photosynthesis: geographical and taxonomic distribution and relations to climate parameters
The occurrence of total C4 species, C4 monocots and C4 Chenopodiaceae was assessed for five major phyto-geographical regions of Europe and the abundance was related to the climatic variables of annual mean daily temperature, annual precipitation and DeMartonne's aridity index.
CO2‐concentrating: consequences in crassulacean acid metabolism
The consequences of CO(2)-concentrating in leaf air-spaces of CAM plants during daytime organic acid decarboxylation in Phase III of CAM (crassulacean acid metabolism) are explored. There are
Clusia : a woody neotropical genus of remarkable plasticity and diversity
This chapter discusses the Phylogeny, Diversity and Ecology of Clusia, and discusses the role of Morphology, Anatomy, Life Forms and Hydraulic Architecture in the Development of Species Diversity and Distribution.
Three-dimensional Map of a Plant V-ATPase Based on Electron Microscopy*
Two three-dimensional maps derived from electron microscopic images of the complete V-ATPase complex from the plant Kalanchoë daigremontiana are presented, showing structural changes corresponded to decreased stability of the complex and might be the initial step in a controlled disassembly.