Shoot Meristem Formation in Vegetative Development.

We focus on meristem formation in the vegetative shoots of flowering plants

R. A. Kerstetter; S. Hake

2002

Scholarcy highlights

  • The majority of the plant body is derived from the activities of groups of specialized cells, known as apical meristems, at the growing tips
  • Leaves are thickened and lobed, and in severe cases, shoots arise on the adaxial leaf surface. These results indicate that a high level of kn1 expression is sufficient to induce ectopic meristem formation in transgenic tobacco and Arabidopsis leaves
  • shoot apical meristem are formed in a number of different locations in the plant, display different degrees of activity, and acquire a variety of different fates during development
  • Significant attention has been given to elucidating the properties of SAMs in flowering plants
  • What constitutes a SAM? The totipotency and plasticity demonstrated by the ability of differentiated plant cells to dedifferentiate and organize adventitious shoot meristems may suggest that virtually any living cell or group of cells in the plant has the potentialto form a meristem, given the appropriate conditions or signals
  • Characterizing mutant phenotypes that disrupt normal meristem function, uncovering patterns of gene expression that mark functional domains within the meristem, and inducing ectopic meristem formation are a few of the recent approaches that are helping to elucidate the mechanisms by which SAMs form, maintain themselves, initate organ primordia, and pattern the shoot system

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