urédospore

urédospore

urédospore [ yredɔspɔr ] n. f.
• 1891; du lat. uredo « charbon » et spore
♦ Bot. Spore de dissémination, spéciale aux urédinales.

● urédospore nom féminin (du latin uredo, -inis, charbon) L'un des types de spores des urédinales ou « rouilles ».

⇒URÉDOSPORE, subst. fém.
BOT. Spore de dissémination caractéristique des urédinées. [Le champignon Rouille du Blé] émet extérieurement des spores dites urédospores (PLANTEFOL, Bot. et biol. végét., t. 2, 1931, p. 138).
Prononc.: []. Étymol. et Hist. 1884-85 (VAN TIEGHEM, Traité de bot., t. 3, p. 1038). Formé du lat. sc. uredo (urédinées) et de spore. Bbg. QUEM. DDL t. 15.

urédospore [yʀedɔspɔʀ] n. f.
ÉTYM. 1891; du lat. uredo (→ Urédinées), et spore.
❖
♦ Bot. Spore de dissémination, spéciale aux urédinées.
0 Des corpuscules allongés d'un rouge brun portés par un filament : ce sont les premières spores du champignon et on les appelle urédospores (fig. 5).
E.-L. Trouessart, les Microbes, les Ferments et les Moisissures, p. 13, in D. D. L., II, 15.

Encyclopédie Universelle. 2012.

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