title: Phytochrome-induced changes of β-fructosidase activity in radish cotyledons.
abstract: β-fructofuranosidase (E.C.3.2.1.26) activity can hardly be detected in cotyledons from dark-grown radish (Raphanus sativus) seedlings. Under continuous far-red light two waves of β-fructofuranosidase activity can be observed. The first one concerns an acidic invertase which progressively disappears. This wave is followed by the appearance of a neutral invertase. Some characteristics of these two enzymes are given. Their regulation by light via phytochrome is discussed.
authors.affiliation: Laboratoire de Photobiologie, associé au Centre National de la Recherche Scientifique - Faculté des Sciences de Rouen, F-76130, Mont Saint Aignan, France.
authors.forename: M
authors.initials: M
authors.lastname: Zouaghi