1. University of East Anglia, Norwich NR4 7TL, UK.
2. Universidade Federal da Bahia, 40170-210 Salvador, Bahia, Brazil.
3. Swedish University of Agricultural Sciences, 75007 Uppsala, Sweden.
4. Emory University, Atlanta, GA 30322, USA.
5. Universidad Nacional Autónoma de México, Tlalnepantla, México 54090, Mexico.
6. The Australian National University, Canberra, Australia Capital Territory 2601, Australia.
7. Universidad Nacional de Córdoba, National Scientific and Technical Research Council (CONICET), Córdoba, Argentina.
8. Commonwealth Scientific and Industrial Research Organisation (CSIRO) Land and Water, James Cook University, Cairns, Queensland 4878, Australia.
9. Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil.
10. Embrapa Recursos Genéticos e Biotecnologia, CEP 70770-917 Brasília, DF, Brazil.
11. Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan.
12. University of Reading, Reading RG6 6AR, UK.