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Mawson BT, Colman B, Cummins WR. Abscisic Acid and photosynthesis in isolated leaf mesophyll cell. Plant Physiol. 1981;67(2):233-6doi: 10.1104/pp.67.2.233.
Mawson, B. T., Colman, B., & Cummins, W. R. (1981). Abscisic Acid and photosynthesis in isolated leaf mesophyll cell. Plant physiology, 67(2), 233-6. https://doi.org/10.1104/pp.67.2.233
Mawson, B T, et al. "Abscisic Acid and photosynthesis in isolated leaf mesophyll cell." Plant physiology vol. 67,2 (1981): 233-6. doi: https://doi.org/10.1104/pp.67.2.233
Mawson BT, Colman B, Cummins WR. Abscisic Acid and photosynthesis in isolated leaf mesophyll cell. Plant Physiol. 1981 Feb;67(2):233-6. doi: 10.1104/pp.67.2.233. PMID: 16661653; PMCID: PMC425661.
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Plant Physiol. 1981 Feb;67(2):233-6. doi: 10.1104/pp.67.2.233.

Abscisic Acid and photosynthesis in isolated leaf mesophyll cell.

Plant physiology

B T Mawson, B Colman, W R Cummins

Affiliations

  1. Department of Botany, University of Toronto, Erindale College, Mississauga, Ontario, Canada L5L 1C6.

PMID: 16661653 PMCID: PMC425661 DOI: 10.1104/pp.67.2.233

Abstract

Abscisic acid (AbA) treatments of concentrations of up to 135 micromolar did not inhibit photosynthesis in enzymatically isolated leaf mesophyll cells of Phaseolus vulgaris, Nicotiana tabacum, and Lycopersicum esculentum over periods of up to 5 hours. Thin slices of leaves preincubated in hypertonic solutions identical to those used to isolate cells were shown to synthesize AbA rapidly, although accumulation of AbA in the cells was low due to extensive release of the newly synthesized AbA into the medium. The levels of endogenously made AbA in leaf cells of Phaseolus vulgaris rose from a low of 0.27 micromolar to a high of 6.74 micromolar during 2 hours preincubation. Exogenously applied AbA can be taken up by the cells as was demonstrated using (14)[C]AbA. Thus, AbA applied at concentrations 19 times higher than endogenous levels does not change the rate of photosynthesis.

References

  1. Plant Physiol. 1972 May;49(5):842-7 - PubMed
  2. Plant Physiol. 1975 Aug;56(2):250-4 - PubMed

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