PART OF A SPECIAL ISSUE ON REACTIVE OXYGEN AND NITROGEN SPECIES Redox markers for drought-induced nodule senescence, a process occurring after drought-induced senescence of the lowest leaves in soybean (Glycine max)

Belén Marquez-Garcia1,y, Daniel Shaw, James William Cooper, Barbara Karpinska, Marian Dorcas Quain1,z, Eugene Matome Makgopa, Karl Kunert and Christine Helen Foyer* Centre for Plant Sciences, Faculty of Biology, University of Leeds, Leeds LS2 9JT, UK and Forestry and Agricultural Biotechnology Institute, Plant Science Department, University of Pretoria, Pretoria 0002, South Africa * For correspondence. E-mail [email protected] † Present address: Department of Plant Systems Biology, VIB, Technologiepark 927, B-9052 Ghent, Belgium and Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, B-9052 Ghent, Belgium. ‡ Present address: Council for Scientific and Industrial Research, Crops Research Institute, PO Box 3785, Kumasi, Ghana.