1. Department of Plant Biotechnology and Bioinformatics Ghent University Ghent 9054 Belgium
2. Center for Plant Systems Biology VIB Ghent 9054 Belgium
3. Department of Biology Centre for Novel Agricultural Products (CNAP) University of York Wentworth Way York YO10 5DD UK
4. Agricultural Research Council Vegetable, Industrial and Medicinal Plants Research Campus Private Bag X293 Pretoria 0001 South Africa
5. Crop Science Department Faculty of Natural and Agricultural Sciences North West University P/Bag X2046 Mmabatho 2735 South Africa
6. Wellcome Sanger Institute Wellcome Genome Campus Hinxton, Cambridge CB10 1SA UK
7. Department of Plant Sciences Seed Biotechnology Center University of California Davis CA 95616 USA
8. Department of Biochemistry, Genetics and Microbiology University of Pretoria Pretoria 0028 South Africa
9. College of Horticulture Nanjing Agricultural University Nanjing 210095 China