Acknowledgments
We would like to thank Dr. Michael Gerth for kindly providing comments
on the manuscript. This work was supported by: a BBSRC Doctoral Training
Partnership studentship (BB/M011186/1) awarded to JP; a Development and
Promotion of Science and Technology Talents Project (DPST) of the
Institute for the Promotion of Teaching Science and Technology, Thailand
to PT and a Harry Smith Vacation studentship (Microbiology society) to
HD.