The Absorption of Inorganic Ions by Chlorella pyrenoidosa.
نویسندگان
چکیده
منابع مشابه
Ion Absorption and Retention by Chlorella pyrenoidosa
MIost of the plant ion absorption experiments in the past have been condlucted with coenocytic algae and higher plants (24). In mature cells of these organisms the vacuole occupies 80 to 90 % of the cell volume. With respect to ionic movements the cytoplasm and vacuole represent 2 distinct physical compartments (2,16). As a result, the molecular details associated with ion absorption, as well a...
متن کاملUtilization of Exogenous Inorganic Carbon Species in Photosynthesis by Chlorella pyrenoidosa.
The nature of the inorganic carbon utilized during photosynthesis by Chlorella pyrenoidosa was investigated using three experimental techniques (open gas analysis system with "artificial leaf" or "aqueous" chambers and O(2) electrode system) to measure carbon assimilation. Photosynthesis was studied as a function of pH and CO(2) concentration. The CO(2) concentration was inadequate to meet the ...
متن کاملIon Absorption and Retention by Chlorella Pyrenoidosa. II. Permeability of the Cell to Sodium and Rubidium.
The Na and Rb permeability of Chlorella pyrenoidosa were estimated from the rates of radioisotope self-diffusion.The isotopic exchange in absence of net ionic movements followed first order kinetics. This suggested that for sodium, which reached isotopic equilibrium in approximately 90 minutes, the cell behaved as 1 compartment with respect to isotopic exchange. Rubidium in 180 minutes approach...
متن کاملIon Absorption and Retention by Chlorella pyrenoidosa. III. Selective Accumulation of Rubidium, Potassium and Sodium.
The selective preference of Chlorella pyrenoidosa for alkali metal cations was found to have the order Rb > K > > > Na. It was demonstrated that a cation of higher preference can replace in the cell cations of lower preference by an ion interchange process.The replacement of Na from the cell by K or Rb occurred against high external Na concentrations up to 450 meq/1 Na.It is suggested that the ...
متن کاملMetabolism of Fatty Acid Hydroperoxides by Chlorella pyrenoidosa.
The green alga Chlorella pyrenoidosa was examined for its ability to metabolize 13-hydroperoxylinoleic and 13-hydroperoxylinolenic acids. The study showed that Chlorella extracts possessed hydroperoxide dehydrase and other enzymes of the jasmonic acid pathway. However, under normal laboratory conditions for culture growth, neither jasmonic acid nor metabolites of the jasmonic acid pathway were ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1954
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.29.3.229