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. 1984 May;75(1):235-7.
doi: 10.1104/pp.75.1.235.

Helminthosporium maydis T Toxin Increased Membrane Permeability to Ca in Susceptible Corn Mitochondria

M J Holden  1 , H Sze
Affiliations

Helminthosporium maydis T Toxin Increased Membrane Permeability to Ca in Susceptible Corn Mitochondria

M J Holden et al. Plant Physiol. 1984 May.

Abstract

Though Helminthosporium maydis race T (HmT) toxin decreased active Ca(2+) uptake into mitochondria isolated from susceptible (T) but not resistant (N) corn (Kimber, Sze, 1984 Plant Physiol 74: 804-809 the mode of toxin action is not understood. This study shows that HmT toxin or A23187 (a Ca(2+) ionophore) dissipated a Ca(2+) gradient in T mitochondria. However, HmT toxin had no effect on Ca(2+) gradients in N mitochondria or microsomal vesicles from T or N corn. The results suggest that HmT toxin increased membrane permeability to Ca(2+) in mitochondria of T corn specifically.

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References

    1. Anal Biochem. 1976 May 7;72:248-54 - PubMed
    1. Biochem Biophys Res Commun. 1983 Aug 12;114(3):1176-81 - PubMed
    1. Plant Physiol. 1977 Apr;59(4):540-5 - PubMed
    1. Eur J Biochem. 1979 Mar 15;95(1):1-20 - PubMed
    1. Plant Physiol. 1984 Apr;74(4):804-9 - PubMed

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