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Susceptibility to the rectal pathogen Microbacterium nematophilum provides a means of examining hindgut differentiation in C. elegans. Mutants of bus-1 are resistant to infection with this pathogen. We show here that bus-1 encodes a predicted acyltransferase expressed in rectal epithelial cells (K, F, and U), suggesting its involvement in regional surface modification. bus-1 reporter genes were used to show spatial regulation by hindgut developmental control genes: egl-38, mab-9, and mab-23. A bus-1::GFP reporter reveals the conspicuous rectal epithelial swelling induced by M. nematophilum. The C. briggsae ortholog of bus-1 exhibits conserved function and rectal expression, but it is expressed in vulval as well as rectal cells, correlated with pathogen adhesion to both vulval and rectal cells in this species. Another acyltransferase affecting bacterial adhesion, bus-18/acl-10, was also identified, which also shows strong rectal expression, but it is expressed in additional epithelial tissues and is required for general surface integrity.

Original publication

DOI

10.1002/dvdy.21792

Type

Journal article

Journal

Dev Dyn

Publication Date

12/2008

Volume

237

Pages

3762 - 3776

Keywords

Actinomycetales, Acyltransferases, Amino Acid Sequence, Animals, Caenorhabditis elegans, Caenorhabditis elegans Proteins, Epithelial Cells, Gene Expression Regulation, Enzymologic, Genes, Reporter, Molecular Sequence Data, Mutation, Rectum, Sequence Alignment, Sequence Homology, Amino Acid