Institute of Computer Science, Martin Luther University Halle-Wittenberg, Halle, Germany.|Department of Stress and Developmental Biology, Leibniz Institute of Plant Biochemistry, Halle, Germany.|Institut dInvestigació en Intel ligència Artificial, IIIA-CSIC, Campus UAB, Cerdanyola, Spain.|Institute of Computer Science, Martin Luther University Halle-Wittenberg, Halle, Germany.