1. Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
2. The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
3. CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, P.R. China
4. Southwest Center for Natural Products Research, University of Arizona, Tucson, AZ 85706
5. VTT Technical Research Centre of Finland, FI-02044 VTT, Espoo, Finland