A pigment, found in the cytoplasm of green plants, which can exist in two forms Pr (biologically inactive) and Pfr (biologically active). Pfr is converted into Pr by exposure to light of wavelength 730 nm. Involved in the timing of many plant processes, e.g. dormancy, leaf formation, flowering and germination.

Glossary of Biotechnology for Food and Agriculture . 2015.

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  • PHYTOCHROME — La lumière n’est pas seulement pour les plantes la source énergétique de la photosynthèse. Elle contrôle leur développement, de la germination à la mise à fleur; elle intervient dans les mouvements de leurs organes et de leurs cellules; elle est …   Encyclopédie Universelle

  • Phytochrome — is a photoreceptor, a pigment that plants use to detect light. It is sensitive to light in the red and far red region of the visible spectrum. Many flowering plants use it to regulate the time of flowering based on the length of day and night… …   Wikipedia

  • phytochrome — phytochrome. См. фитохром. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • phytochrome — ou phytochromule (fi to kro m ou fi to kro mu l ) s. f. La chlorophylle. ÉTYMOLOGIE    Phyto..., du grec, couleur …   Dictionnaire de la Langue Française d'Émile Littré

  • phytochrome — [fīt′ō krōm΄] n. [ PHYTO + CHROME] a bluish green plant protein that, in response to variations in red light, regulates the growth of plants …   English World dictionary

  • Phytochrome — Un phytochrome est un photorécepteur de l organisme végétal. Il s agit d une chromoprotéine constituée d une partie protéique (apoprotéine d environ 1100 acides aminés) à laquelle est associée un groupement prosthétique : le chromophore. Ce… …   Wikipédia en Français

  • phytochrome — noun Date: 1960 any of a group of proteins bound to light absorbing pigments in many plants that play a role in initiating floral and developmental processes when activated by red or near infrared radiation …   New Collegiate Dictionary

  • phytochrome — Plant pigment protein that absorbs red light and then initiates physiological responses governing light sensitive processes such as germination, growth and flowering. Exists in two forms, Pr and Pfr, that are interconverted by light …   Dictionary of molecular biology

  • phytochrome — /fuy teuh krohm /, n. Bot. a plant pigment that is associated with the absorption of light in the photoperiodic response and that may regulate various types of growth and development. [1890 95; PHYTO + CHROME] * * * …   Universalium

  • phytochrome — noun Any of a class of pigments that control most photomorphogenic responses in higher plants …   Wiktionary

  • phytochrome — noun Biochemistry a blue green pigment found in many plants, in which it regulates various developmental processes. Origin C19: from phyto + Gk khrōma colour …   English new terms dictionary

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