Phytochrome-Mediated Control of Diamine Oxidase Level in the Epicotyl of Etiolated Lentil (Lens culinaris Medicus) Seedlings | Zendy

Riccardo Angelini | Zendy; Rodolfo Federico | Zendy; Alberto L. Mancinelli | Zendy

Open Access

Phytochrome-Mediated Control of Diamine Oxidase Level in the Epicotyl of Etiolated Lentil (Lens culinaris Medicus) Seedlings

Author(s) -

Riccardo Angelini,

Rodolfo Federico,

Alberto L. Mancinelli

Publication year - 1988

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.88.4.1207

Subject(s) - etiolation , phytochrome , epicotyl , diamine oxidase , photomorphogenesis , seedling , botany , biology , far red , red light , chemistry , biochemistry , enzyme , gene , arabidopsis , mutant

Diamine oxidase (DAO; EC 1.4.3.6) levels are strongly reduced in epicotyls of 3-day-old etiolated lentil (Lens culinaris Medicus) seedlings upon exposure to continuous red and blue light, as compared to etiolated controls. Far-red light inhibits DAO activity to a lesser extent. A less marked effect can also be obtained by short (5-10 min) daily exposures. Phytochrome involvement in this light-mediated response has been demonstrated by red/far-red reversibility experiments. These findings provide the first evidence that mechanisms underlying the photoregulation of DAO level in the Leguminosae are related to photomorphogenesis and are essentially unrelated to the photosynthetic capacity of the seedling.

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