1. Department of Plant Biology, Institute of Biology, University of Campinas, 13083-970 Campinas, Sao Paulo, Brazil
2. Ulm University, Institute of Systematic Botany and Ecology, 89081 Ulm, Germany
3. Brazilian Synchrotron Light Laboratory, Brazilian Center for Research in Energy and Materials, 13083-970 Campinas, Sao Paulo, Brazil
4. Department of Crop Production, School of Agriculture Luiz de Queiroz, University of São Paulo, 13418-900 Piracicaba, Sao Paulo, Brazil