Influence of Helminthosporium maydis, Race T, Toxin on Potassium Uptake in Maize Roots: II. Sensitivity of Development of the Augmented Uptake Potential to Toxin and Inhibitors of Protein Synthesis 1

AUTOR(ES)

Frick, Hugh

RESUMO

Basal K+ uptake in the root midzone region (cm 2 + 3 + 4) of N and T cytoplasmic versions of each of four maize inbreds was equally sensitive to the toxin(s) of Helminthosporium maydis, race T. Basal K+ uptake in the root apex (0-1 cm) and augmented K+ uptake in the root midzone were more toxin-sensitive in inbreds W64A(T) and Mo17(T) than in inbreds W64A(N) and Mo17(N). This differential response of N and T cytoplasms to toxins was not found for corresponding cytoplasms of inbreds WF9 and B37.

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