An Arabidopsis Homolog of the Bacterial Cell Division Inhibitor SulA Is Involved in Plastid Division[W] | Zendy

Cécile Raynaud | Zendy; Corinne CassierChauvat | Zendy; Claudette Perennes | Zendy; Catherine Bergounioux | Zendy

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An Arabidopsis Homolog of the Bacterial Cell Division Inhibitor SulA Is Involved in Plastid Division[W]

Author(s) -

Cécile Raynaud,

Corinne CassierChauvat,

Claudette Perennes,

Catherine Bergounioux

Publication year - 2004

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.022335

Subject(s) - plastid , biology , endosymbiosis , cell division , arabidopsis , arabidopsis thaliana , division (mathematics) , microbiology and biotechnology , gene , genetics , chloroplast , cell , arithmetic , mathematics , mutant

Plastids have evolved from an endosymbiosis between a cyanobacterial symbiont and a eukaryotic host cell. Their division is mediated both by proteins of the host cell and conserved bacterial division proteins. Here, we identified a new component of the plastid division machinery, Arabidopsis thaliana SulA. Disruption of its cyanobacterial homolog (SSulA) in Synechocystis and overexpression of an AtSulA-green fluorescent protein fusion in Arabidopsis demonstrate that these genes are involved in cell and plastid division, respectively. Overexpression of AtSulA inhibits plastid division in planta but rescues plastid division defects caused by overexpression of AtFtsZ1-1 and AtFtsZ2-1, demonstrating that its role in plastid division may involve an interaction with AtFtsZ1-1 and AtFtsZ2-1.

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