Journal Article

Two Types of <i>ftsZ</i> Genes Isolated from the Unicellular Primitive Red Alga <i>Galdieria sulphuraria</i>

Manabu Takahara, Hidenori Takahashi, Sachihiro Matsunaga, Atsushi Sakai, Shigeyuki Kawano and Tsuneyoshi Kuroiwa

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 40, issue 8, pages 784-791
Published in print January 1999 | ISSN: 0032-0781
Published online January 1999 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029606
Two Types of ftsZ Genes Isolated from the Unicellular Primitive Red Alga Galdieria sulphuraria

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FtsZ plays a crucial role in bacterial cell division, and may be involved in plastid division in eukaryotes. To investigate the evolution of the dividing apparatus from prokaryotes to eukaryotes, the ftsZ genes were isolated from the unicellular primitive red alga Galdieria sulphuraria. Two ftsZ genes (GsftsZ1 and GsftsZ2) were isolated. This suggests that duplication and divergence of the ftsZ gene occurred in an early stage of plant evolution. A comparison of the FtsZs of G. sulphuraria and other organisms shows that FtsZ is highly and universally conserved among prokaryotes, primitive eukaryotic algae, and higher plants. The GsftsZ2 gene seems to contain an intron. Southern hybridization analysis of the G. sulphuraria chromosomes separated by CHEF revealed that each ftsZ gene and its flanking region may be duplicated.

Keywords: CHEF(PFGE); ftsZ; Galdieria sulphuraria; Gene duplication; Plastid division; Primitive red alga

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Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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