I. \\ˈkaˌlōs\ adjective
Etymology: International Scientific Vocabulary call- (from Latin callum hard skin) + -ose; originally formed in French — more at callous
: having protuberant hardened spots

callose leaves

II. noun (-s)
Etymology: Latin callosus callous
: a carbohydrate component of cell walls that is readily stained by aniline blue and is found especially on sieve plates where it forms the callus

* * *

/kal"ohs/, adj.
1. having thickened or hardened spots, as a leaf.
2. callus (def. 2).
[1860-65; < L callosus; see CALLOUS, -OSE1]

* * *

callose, a. Bot.
[ad. L. callōsus: see callous.]
Having callosities.
in Webster. Gray Bot. Text-bk. 400.

Useful english dictionary. 2012.

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  • CALLOSE — Polyglucoside formé, comme la cellulose, par la polymérisation du glucose, mais qui diffère de la cellulose par le type de liaison des monomères glucose entre eux. La callose est une substance insoluble dans l’eau, l’alcool, et dans la liqueur de …   Encyclopédie Universelle

  • Callose — is a plant polysaccharide. It is comprised of glucose residues linked together through b 1,3 linkages, and is termed a B glucan. It is thought to be manufactured at the cell wall by callose synthases and is degraded by b 1,3 glucanases. It is… …   Wikipedia

  • Callose — Cal lose, a. [See {Callous}.] (Bot.) Furnished with protuberant or hardened spots. [1913 Webster] …   The Collaborative International Dictionary of English

  • callose — [kal′ōs΄] n. [< L callosus, CALLOUS] a carbohydrate in plant cells that plugs the sieve pores when the sieve tubes stop functioning …   English World dictionary

  • Callose — Calloseablagerungen in Schwammparenchymzellen von Tabak Callose (auch Kallose) ist ein Polysaccharid, das pflanzlichen Zellen als universelles Abdichtungsmaterial in verschiedensten Situationen dient. Inhaltsverzeichnis …   Deutsch Wikipedia

  • callose — A plant cell wall polysaccharide (a b (1 3) glucan) found in phloem sieve plates, wounded tissue, pollen tubes, cotton fibres, and certain other specialized cells …   Dictionary of molecular biology

  • callose — /kal ohs/, adj. 1. having thickened or hardened spots, as a leaf. n. 2. callus (def. 2). [1860 65; < L callosus; see CALLOUS, OSE1] * * * …   Universalium

  • callose — noun A plant polysaccharide comprising glucose residues linked together through β 1,3 linkages, produced chiefly in response to wounding and infection …   Wiktionary

  • callose — A linear 1,3 β d glucan formed by certain enzymes from UDP glucose, differing from cellulose (a β 1,4 glucan formed from GDP glucose) and starch amylose (an α 1,4 glucan formed from ADP glucose). Found in certain plant cell walls. * * * cal·lose… …   Medical dictionary

  • Callose — Cal|lo|se ↑ Kallose …   Universal-Lexikon

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