1. Martin-Luther-University Halle-Wittenberg, Department Biochemistry/Biotechnology, Division of Ecology and Plant-Biochemistry, Kurt-Mothes-Strasse 3, 06120 Halle, Germany, and Hassan II University, Faculté des Sciences, BP 5366, Mâarif, Casablanca, Morocco, and Institut National de Recherche Halieutique, 2 Rue Tiznit, Casablanca, Morocco