We would like to thank the BIOTEC culture collection at the
National Center for Biotechnology and Genetic Engineering
for allowing use of their laboratory facilities for isolation of
thermotolerant yeasts. We would like to thank Prof Haruyuki
Iefuji, National Research Institute of Brewing, Japan,
for his helpful discussions. J.T. gratefully acknowledges the
financial support provided by doctoral grants from the
Institutional Strengthening Program under the Faculty of
Science, Mahidol University, and from the Ministry of
Education under the Science and Technology Higher Education
Development Project in Agricultural Biotechnology.We
would also like to thank Prof Timothy Flegel for critical
reading of the manuscript.