Responses of runner bean plants to excess copper as a function of plant growth stages: effects on morphology and structure of primary leaves and their chloroplast ultrastructure

Title:

Responses of runner bean plants to excess copper as a function of plant growth stages: effects on morphology and structure of primary leaves and their chloroplast ultrastructure

Creator:

Maksymiec, W., Bednara, J., and Baszyński, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2208b746-03ed-430d-93af-6456423bc85a
uuid:2208b746-03ed-430d-93af-6456423bc85a
urnnbn:urn:nbn:cz:aba007-000foo

Subject:

chlorophyll, CUSO4, digalactosyl diacylglycerol, leaf area, leaf density, monogalactosyl diacylglycerol, Phaseolus coccineus L., senescence, and stroma lamellae

Type:

model:internalpart and TEXT

Format:

print

Description:

Morphological and ultrastructural changes, the chlorophyll (Chl) content and Chl a fluorescence induction were studied in primary leaves of runner beán plants (Phaseolus coccineus L. cv. Pi?kny Jaš) grown in Knop solution and treated with excess Cu [20 g(CuS04 x 5 H2O) m"^] at difíerent growth stages. The plants were exposed to the metal for 12 d. Cu added to the nutrient solution at the beginning growth stage induced significant leaf area reduction (31 %) as well as increase of Chl accumulation (148 %) and leaf density (122 %). No ultrastructural changes of chloroplasts were seen. Application of Cu at the advanced growth stage caused relatively smáli changes except local disturbances in stroma lamellae and leaf reduction to 70 % of control. Significant disorganization of chloroplast ultrastructure, smáli leaf area reduction (80 %) but specific leaf area increase (163 %) and leaf density decrease (67 %) were seen only in the primary leaves of plants treated with Cu at the finál stage of growth. These changes, similar to senescence response, were accompanied by Fy/Fo ratio decrease to 67 % in comparison with control.

Language:

Multiple languages

Rights:

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

Coverage:

427-435 and 109-117

Source:

Photosynthetica | 1995 Volume:31 | Number:3

Harvested from:

CDK

Metadata only:

false