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Journal of Experimental Botany, Vol. 54, No. 384, pp. 1115-1116, March 1, 2003
© 2003 Oxford University Press

Isolation of two plastid division ftsZ genes from Chlamydomonas reinhardtii and its evolutionary implication for the role of FtsZ in plastid division

Received 6 September 2002; Accepted 16 December 2002

Dong Wang4,1, Dongdong Kong4,2,3, Yingdian Wang1, Yong Hu2, Yikun He5,2 and Jingsan Sun3

1 College of Life Sciences, Beijing Normal University, Beijing 100875, China
2 Department of Biology, Capital Normal University, Beijing 100037, China
3 Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

4 Co-first authors.
5 To whom correspondence should be addressed: (until September 2003) DCMB, Department of Biology, LSRC Building, Research Drive. Box 91000, Duke University, Durham, NC 27708-1000, USA. E-mail: yhe{at}duke.edu; (after September 2003) Department of Biology, Capital Normal University, Beijing 100037, China. E-mail: yhe{at}email.cnu.edu.cn
Abbreviations: fts, filament temperature sensitive; RT-PCR, reverse transcription PCR.

In order to elucidate the origin of the plastid division gene ftsZ in green plant lineage, and to understand the significance of this divergence for the function of FtsZ proteins in plants, two full-length cDNAs (accession numbers AF449446 and AB084236) were isolated from Chlamydomonas reinhardtii, a base species of green plant lineage. A phylogenetic analysis based on amino acid sequences of eukaryotic FtsZs reveals that an ancient duplication of the ftsZ gene occurred after the endosymbiotic event. The ancient duplication implies that two ftsZ families might play an indispensable role at the early endosymbiotic stage.

Key words: Ancient gene duplication, Chlamydomonas reinhardtii, ftsZ, plastid division.


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