Screening for yeast mutants defective in recipient ability for transkingdom conjugation with Escherichia coli revealed importance of vacuolar ATPase activity in the horizontal DNA transfer phenomenon

Mizuta Mami

Satoh Emi

Katoh Chika

Tanaka Katsuyuki

Moriguchi Kazuki

Suzuki Katsunori

Microbiological Research

Proteobacterium Escherichia coli strains harboring wide-transfer-range conjugative plasmids are able to transfer these plasmids to several yeast species. Whole plasmid DNA is mobilizable in the transkingdom conjugation phenomenon. Owing to the availability of various conjugative plasmids in bacteria, the horizontal DNA transfer has potential to occur between various bacteria and eukaryotes. In order to know host factor genes involved in such conjugation, we systematically tested the conjugability of strains among a yeast library comprising single-gene-knockout mutants in this study. This genome-wide screen identified 26 host chromosomal genes whose absence reduced the efficiency of the transkingdom conjugation. Among the 26 genes, 20 are responsible for vacuolar ATPase activity, while 5 genes (SHP1, CSG2, CCR4, NOT5, and HOF1) seem to play a role in maintaining the cell surface. Lack of either ZUO1 gene or SSZ1 gene, each of which encodes a component of the ribosome-associated cytoplasmic molecular chaperone, also strongly affected transkingdom conjugation.

Horizontal gene transfer

Conjugation

Transformation

Saccharomyces cerevisiae

Interaction between bacteria and eukarya

Gene transfer from bacteria to eukarya

Transkingdom sex

Broad host range plasmid

Biology [ 460 ]

eng

Elsevier GmbH

© 2012. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。

[ISSN] 0944-5013

[ISSN] 1618-0623

[DOI] 10.1016/j.micres.2011.10.001

[PMID] 22169356

[DOI] https://doi.org/10.1016/j.micres.2011.10.001