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. 1984 May;75(1):235–237. doi: 10.1104/pp.75.1.235

Helminthosporium maydis T Toxin Increased Membrane Permeability to Ca2+ in Susceptible Corn Mitochondria 1

Marcia J Holden 1, Heven Sze 1
PMCID: PMC1066870  PMID: 16663580

Abstract

Though Helminthosporium maydis race T (HmT) toxin decreased active Ca2+ 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 Ca2+ ionophore) dissipated a Ca2+ gradient in T mitochondria. However, HmT toxin had no effect on Ca2+ gradients in N mitochondria or microsomal vesicles from T or N corn. The results suggest that HmT toxin increased membrane permeability to Ca2+ in mitochondria of T corn specifically.

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Selected References

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

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