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Molecular Basis for the Cat-2 Null Phenotype in Maize

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PMC
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  • Investigations
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  • Biology
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Abstract

Previous reports have described several maize lines whose developmental patterns of catalase gene expression vary from the ``typical'' maize line, W64A. Among these variants are the lines A16 and A338, both found to be null for the CAT-2 protein. Identification of a third CAT-2 null line, designated A340, is described. RNA blots and S1 nuclease protection analysis indicate that all three CAT-2 null lines produce a similarly shortened Cat2 transcript. The molecular basis for this aberrant Cat2 transcript is discussed.

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