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. 1979 Jun;63(6):1187-90.
doi: 10.1104/pp.63.6.1187.

Analysis of the Distribution of Potassium-stimulated Adenosine Triphosphatase Activity in Soybean Root

R L Travis  1 , S Geng, R L Berkowitz
Affiliations

Analysis of the Distribution of Potassium-stimulated Adenosine Triphosphatase Activity in Soybean Root

R L Travis et al. Plant Physiol. 1979 Jun.

Abstract

The distribution of activity of a potassium-stimulated ATPase associated with the plasma membrane was determined in 4-day-old soybean roots. Changes in protein-based specific activity of the enzyme coincided with developmental changes in the root. Activity was low in the region of the root cap, increased to a maximum in the meristematic region, decreased to a minimum as cell elongation proceeded, and then increased as lateral root development began. Analysis of the data indicated that fluctuations in enzyme activity can be described by a three-phase system which can be approximated by a linear-linear-linear piece-wise regression curve. The need for constructing a biological model to describe plasma membrane development is suggested.

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References

    1. Plant Physiol. 1973 Apr;51(4):749-54 - PubMed
    1. Proc Natl Acad Sci U S A. 1972 Nov;69(11):3307-11 - PubMed
    1. Plant Physiol. 1978 Jun;61(6):993-9 - PubMed
    1. Plant Physiol. 1979 Jun;63(6):1191-7 - PubMed
    1. Plant Physiol. 1973 Jul;52(1):6-12 - PubMed

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