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. 1981 Aug;68(2):355–357. doi: 10.1104/pp.68.2.355

Nocturnal Accumulation of Malic Acid Occurs in Mesophyll Tissue without Proton Transport to Epidermal Tissue in the Inducible Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum1

EVIDENCE AGAINST A PREVIOUS HYPOTHESIS

Klaus Winter 2, Gerald E Edwards 2,3, Joseph A M Holtum 4
PMCID: PMC427490  PMID: 16661916

Abstract

The inducible Crassulacean acid metabolism plant, Mesembryanthemum crystallinum, accumulates malic acid, i.e. equivalent amounts of malate anions and protons in the mesophyll cells at night. Levels of malate and titratable acidity are low in the epidermal tissue and do not change significantly during the day/night cycle. This result is in contrast to a recent report (Bloom 1979 Plant Physiol 64: 919-923) that the synthesis of malic acid during dark CO2 fixation is associated with an equivalent exchange of inorganic cations from epidermal tissue with protons in the mesophyll cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Bloom A. J. Diurnal Ion Fluctuations in the Mesophyll Tissue of the Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum. Plant Physiol. 1979 Dec;64(6):919–923. doi: 10.1104/pp.64.6.919. [DOI] [PMC free article] [PubMed] [Google Scholar]
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