Molecular Analysis of viviparous-1: An Abscisic Acid-Insensitive Mutant of Maize.

We suggest that the Vp1 gene product functions to potentiate multiple signal transduction pathways in specific seed tissues

D. R. McCarty

2002

Scholarcy highlights

  • The viviparous-1 gene in maize controls multiple developmental responses associated with the maturation phase of seed formation
  • The Vp1 locus was cloned by transposon tagging, using the Robertson's Mutator element present in the vp1-mum mutant allele
  • The Vp1 gene encodes a 2500-nucleotide mRNA that is expressed in embryo and endosperm tissues of the developing seed. This transcript is absent in seed tissues of vp mutant stocks
  • Expression of C1, a regulatory gene for the anthocyanin pathway, is selectively blocked at the mRNA level in vp mutant seed tissues, indicating the Vp1 may control the anthocyanin pathway by regulating C1
  • We suggest that the Vp1 gene product functions to potentiate multiple signal transduction pathways in specific seed tissues

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