ACKNOWLEDGEMENTS
This research is supported by the Center of
Excellence on Agricultural Biotechnology, Science
and Technology Postgraduate Education and
Research Development Office, Office of Higher
Education Commission, Ministry of Education (AGBIO/
PERDO-CHE) and by the National Research
Council of Thailand (NRCT). We thank Professor Dr.
Thomas W. Okita (Washington State University,
USA) for kindly providing A. tumefaciens strain
AGL1.