Senescence-related changes in the subcomplex arrangement of the major light-harvesting chlorophyll a/b-protein complex of photosystem II (LHCII) as influenced by cytokinin

aging cereal crops chlorophylle chlorophylls citoquininas clorofilas cultivos de cereales cytokinine cytokinins envejecimiento fotosistemas gerste hordeum vulgare methode methods photosynthese photosynthesis photosystems polypeptid proteine proteins seneszenz vieillissement