1. Department of Molecular Plant Physiology and Biophysics, Julius-Von-Sachs Institute for Biosciences, University of Würzburg, Würzburg, Germany.
2. Department of Bioinformatics, University of Würzburg, Würzburg, Germany.
3. Department of Computer Science, Institute of Mathematics and Statistics, University of Sa˜o Paulo, Sa˜o Paulo, Brazil.
4. Center for Mathematics, Computing and Cognition, Federal University of the ABC (UFABC), Santo André, Brazil.