Authors: Ana Cristina Sarmento; Henrique Lopes; Cláudia S Oliveira; Rui Vitorino; Bart Samyn; Kjell Sergeant; Griet Debyser; Jozef Van Beeumen; Pedro Domingues; Francisco Amado; Euclides Pires; M Rosário M Domingues; Marlene T Barros Journal: Planta Date: 2009-06-02 Impact factor: 4.116