Abscission

L'abscission est le processus par lequel un fruit ou une feuille se détache de l'arbre (s'effeuille).

Elle dépend de l'équilibre entre plusieurs régulateurs de croissance aux effets antagoniste. L'auxine et les brassinostéroïdes ont un effet inhibiteur et l'éthylène un effet stimulateur.


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  • Abscission — (from Latin abscindere, from ab ‘off, away’ + scindere ‘to cut’) is the shedding of a body part. It most commonly refers to the process by which a plant intentionally drops one or more of its parts, such as a leaf, fruit, flower or seed, though… …   Wikipedia

  • abscission — ● abscission nom féminin (latin abscissio, de abscindere, couper) Rupture normale du pédoncule des feuilles d automne ou des fruits mûrs, entraînant leur chute. ⇒ABSCISION, ABSCISSION, subst. fém. CHIR., vieilli. Synon. de excision, action de… …   Encyclopédie Universelle

  • Abscission — Ab*scis sion, n. [L. abscissio. See {Abscind}.] 1. The act or process of cutting off. Not to be cured without the abscission of a member. Jer. Taylor. [1913 Webster] 2. The state of being cut off. Sir T. Browne. [1913 Webster] 3. (Rhet.) A figure …   The Collaborative International Dictionary of English

  • abscission — index cancellation Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • abscission — (n.) removal or cutting away, early 15c., from L. abscissionem (nom. abscissio) a cutting off, noun of action from pp. stem of abscindere (see ABSCISSA (Cf. abscissa)) …   Etymology dictionary

  • abscission — [ab sizh′ən] n. [ME abscisioun < L abscissio: see ABSCISSA] 1. a cutting off, as by surgery 2. the normal separation of fruit, leaves, etc. from plants by the development of a thin layer of pithy cells at the base of their stems …   English World dictionary

  • Abscission — Abszission bezeichnet das Abwerfen von Blättern, Früchten und anderen Pflanzenteilen wie Laub und Blütenknospen, Zweigen, Stacheln, Dornen oder Blütenständen. Man spricht daher auch vom Blattfall, Fruchtfall, Laubfall, Knospenfall, Blütenfall.… …   Deutsch Wikipedia

  • abscission — noun Etymology: Middle English abscisioun, from Anglo French abscission, Latin abscission , abscissio, from abscindere Date: 15th century 1. the act or process of cutting off ; removal 2. the natural separation of flowers …   New Collegiate Dictionary

  • abscission — /ab sizh euhn, sish /, n. 1. the act of cutting off; sudden termination. 2. Bot. the normal separation of flowers, fruit, and leaves from plants. [1605 15; < L abscission (s. of abscissio). See ABSCISSA, ION] * * * …   Universalium

  • abscission — noun a) The act or process of cutting off. Not to be cured without the abscission of a member. b) The state of being cut off. See Also: abscise, abscisic, abscisic acid, abscisin, abscissin …   Wiktionary

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