Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,907,151,272 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Callose

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
callose [′ka‚lōs]
(biochemistry)
A carbohydrate component of plant cell walls; associated with sieve plates where calluses are formed.
(biology)
Having hardened protuberances, as on the skin or on leaves and stems.
Callose 

a polysaccharide, insoluble in water, contained in plants and consisting of glucose-molecule residues joined in a spiral chain (as opposed to cellulose, in which the glucose molecules are joined in a straight chain).

Callose lines the tubules of the sievelike layers of phloem; asthese tubules age, the amount of callose increases and the tubulesbecome plugged and cease functioning. When a plant is injured, callose is deposited on the cell walls of the parenchyma, forminga callus. Callose is also found in the cell walls of some algae andfungi.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
Callose staining indicates numerous cytoplasmic connections between bundle sheath cell prolongations and neighboring non-vascular cells.
Biological Sciences by Journal of the Alabama Academy of Science
By October, Cummings Carson said, callose tissue should have formed around some canker margins if the introduced hypovirulent strain is reproducing.
The last stand last chance? by McGrath, Chad / American Forests
Callose is a beta--1, 3-glucan polymer of glucose, a major component of inducible plant cell wall apposition and a barrier against fungal infection.
Induction of callose biosynthesis in arabidopsis, an activation of ... by Hamissou, Mijitaba; Haygood, Mark; Patton, Contessa / Journal of the Alabama Academy of Science
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.