Chlorophyllase: occurrence, functions, mechanism of action, effects of external and internal factors

Title:

Chlorophyllase: occurrence, functions, mechanism of action, effects of external and internal factors

Creator:

Dražkiewicz, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7c2bcc92-3d71-41f4-b713-0ff6f14536e8
uuid:7c2bcc92-3d71-41f4-b713-0ff6f14536e8
urnnbn:urn:nbn:cz:aba007-000fkz

Type:

model:internalpart and TEXT

Format:

print

Description:

Chlorophyliase (Chlase) is widely distributed in higher and lower plants and differs in activity. It occurs in various organs. In some plants the enzyme is synthesized in cytoplasm, in others in chloroplasts. Various Chlase forms are known. Participation, in the chlorophyll (Chl) degrading systém belongs to the main fimctions of Chlase. Moreover, it may catalyse Chl biosynthesis and takés part in photosynthesis. The Chlase activity is stimulated by radiant energy, sublethal freezing, heavy metals (Hg, Zn, Cu), Fe and Mn deficiency, and mosaic virus infection. The effect of water content on Chlase activity depends on individual plant organs. Osmotic and saline- osmotic stress decreases Chlase activity, but NaCl can stimulate the activity. The influence of plant age depends on plant genus. Some growth regulators (ethylene, heteroauxin, abscisic acid) increase Chlase activity, others (kinetin, dicarboxylic monoesters, gibberellic acid, gibbérellin A3) inhibit it. The mechanisms of Chlase action are also reviewed.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

321-331 and 3-13

Source:

Photosynthetica | 1994 Volume:30 | Number:3

Harvested from:

CDK

Metadata only:

false