Overexpression of the maize homeo box gene, KNOTTED-1, causes a switch from determinate to indeterminate cell fates.


The KNOTTED-1 (KN1) locus of maize is defined by dominant mutations that affect leaf cell fates. Transposon tagging led to the isolation of the gene and the discovery that KN1 encodes a homeo domain. Immunolocalization studies showed that in wild-type maize plants, KN1 protein is present in nuclei of apical meristems and immature shoot axes but is down… (More)


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