Journal article
Additional vegetative growth in maize reflects expansion of fates in preexisting tissue, not additional divisions by apical initials
Developmental biology, Vol.197(2), pp.198-204
05/15/1998
DOI: 10.1006/dbio.1998.8883
PMID: 9630746
Abstract
The maize shoot is usually determinate: the apical meristem produces a fixed number of vegetative nodes before it switches to tassel development. Culturing maize meristems, however, delays their determinacy. Cultured meristems may form up to twice the usual number of vegetative nodes. Clonal analysis of the "extra" vegetative nodes reveals that these nodes are the product of conversion, roughly equivalent to a homoeotic transformation, of tissue that otherwise would form the base of the tassel. Altered activity of the apical initials does not generate the extra vegetative growth. The conserved, stereotypical activity of the apical initials even in the face of radically prolonged vegetative growth suggests that apical initials in this annual grass may acquire a highly restricted fate (presporogenous tissue) early in embryogenesis.
Details
- Title: Subtitle
- Additional vegetative growth in maize reflects expansion of fates in preexisting tissue, not additional divisions by apical initials
- Creators
- E E Irish - Department of Biological Sciences, University of Iowa, Iowa City 52242, USA
- Resource Type
- Journal article
- Publication Details
- Developmental biology, Vol.197(2), pp.198-204
- DOI
- 10.1006/dbio.1998.8883
- PMID
- 9630746
- NLM abbreviation
- Dev Biol
- ISSN
- 0012-1606
- eISSN
- 1095-564X
- Publisher
- United States
- Language
- English
- Date published
- 05/15/1998
- Academic Unit
- Biology
- Record Identifier
- 9983991963702771
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