Normal and abnormal development in the arabidopsis vegetative shoot apex

June I. Medford, Friedrich J. Behringer, Joseph D. Callos, Kenneth A Feldmann

Research output: Contribution to journalArticle

108 Citations (Scopus)

Abstract

Vegetative development in the Arabidopsis shoot apex follows both sequential and repetitive steps. Early in development, the young vegetative meristem is flat and has a rectangular shape with bilateral symmetry. The first pair of leaf primordia is radially symmetrical and is initiated on opposite sides of the meristem. As development proceeds, the meristem changes first to a bilaterally symmetrical trapezoid and then to a radially symmetrical dome. Vegetative development from the domed meristem continues as leaves are initiated in a repetitive manner. Abnormal development of the vegetative shoot apex is described for a number of mutants. The mutants we describe fall into at least three classes: (1) lesions in the shoot apex that do not show an apparent alteration in the shoot apical meristem, (2) lesions in the apical meristem that also (directly or indirectly) alter leaf primordia, and (3) lesions in the apical meristem that alter meristem size and leaf number but not leaf morphology. These mutations provide tools both to genetically analyze vegetative development of the shoot apex and to learn how vegetative development influences floral development.

Original languageEnglish (US)
Pages (from-to)631-643
Number of pages13
JournalPlant Cell
Volume4
Issue number6
StatePublished - Jun 1992

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Meristem
abnormal development
Domes
Arabidopsis
meristems
lesions (plant)
apical meristems
shoots
leaf primordia
leaves
mutants
shoot meristems
early development
flowering
mutation
Mutation

ASJC Scopus subject areas

  • Plant Science
  • Biochemistry, Genetics and Molecular Biology(all)
  • Biochemistry
  • Cell Biology

Cite this

Medford, J. I., Behringer, F. J., Callos, J. D., & Feldmann, K. A. (1992). Normal and abnormal development in the arabidopsis vegetative shoot apex. Plant Cell, 4(6), 631-643.

Normal and abnormal development in the arabidopsis vegetative shoot apex. / Medford, June I.; Behringer, Friedrich J.; Callos, Joseph D.; Feldmann, Kenneth A.

In: Plant Cell, Vol. 4, No. 6, 06.1992, p. 631-643.

Research output: Contribution to journalArticle

Medford, JI, Behringer, FJ, Callos, JD & Feldmann, KA 1992, 'Normal and abnormal development in the arabidopsis vegetative shoot apex', Plant Cell, vol. 4, no. 6, pp. 631-643.
Medford, June I. ; Behringer, Friedrich J. ; Callos, Joseph D. ; Feldmann, Kenneth A. / Normal and abnormal development in the arabidopsis vegetative shoot apex. In: Plant Cell. 1992 ; Vol. 4, No. 6. pp. 631-643.
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