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A morphometric analysis of cellular differentiation in caps of primary and lateral roots of Helianthus annuus.

Authors
Type
Published Article
Journal
American journal of botany
Publication Date
Volume
72
Issue
7
Pages
1048–1053
Identifiers
PMID: 11539695
Source
Medline
Keywords
  • Nasa Discipline Number 40-10
  • Nasa Discipline Plant Biology
  • Nasa Program Space Biology
  • Non-Nasa Center

Abstract

In order to determine if patterns of cell differentiation are similar in primary and lateral roots, I performed a morphometric analysis of the ultrastructure of calyptrogen, columella, and peripheral cells in primary and lateral roots of Helianthus annuus. Each cell type is characterized by a unique ultrastructure, and the ultrastructural changes characteristic of cellular differentiation in root caps are organelle specific. No major structural differences exist in the structures of the composite cell types, or in patterns of cell differentiation in caps of primary vs. lateral roots.

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