The effect of 3-(3,4-dichlorophenyl)-1,1-dimethylurea on chloroplast development and maintenance in Euglena gracilis. I. Ultrastructural characterization of light-grown cells by the techniques of thin sectioning and freeze-etching.

Plant physiology ·Vol. 45 ·No. 4 ·1970-04-00 ·Pages 475-83

Holt SC, Stern AI

Abstract

The ultrastructure of light-grown Euglena gracilis var. bacillaris was examined by the techniques of thin sectioning and freeze-etching. Thin sectioning revealed the typical organelles previously observed in chemically fixed Euglena. In addition to confirming the observations on thin sections, the freeze-etch technique has revealed the presence in E. gracilis of a complex multilaminar pellicle, and an ordered arrangement to the paramylon granule. The chloroplast thylakoids are particulate and similar to those observed in higher plants.

MeSH Terms

Chloroplasts/drug effects Euglena/cytology Freeze Etching Herbicides/pharmacology Microscopy, Electron Polysaccharides Urea/pharmacology

Chemicals

Herbicides Polysaccharides Urea

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Holt S C

Stern A I

References (21)

21 references, click to expand

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Article Info

Journal

Plant physiology

Abbr.

Plant Physiol

ISSN

0032-0889

DOI

10.1104/pp.45.4.475

Published

1970-04-00

Pages

475-83

Language

English

Region

United States

NLM ID

0401224

PMCID

PMC396435

Subset

External Links

PubMed source DOI: 10.1104/pp.45.4.475 PMC Full Text View journal details

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The effect of 3-(3,4-dichlorophenyl)-1,1-dimethylurea on chloroplast development and maintenance in Euglena gracilis. I. Ultrastructural characterization of light-grown cells by the techniques of thin sectioning and freeze-etching.

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