High contents of anthocyanins in young leaves are correlated with low pools of xanthophyll cycle components and low risk of photoinhibition

Title:

High contents of anthocyanins in young leaves are correlated with low pools of xanthophyll cycle components and low risk of photoinhibition

Creator:

Manetas, Y., Drinia, A., and Petropoulou, Y.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:277cbc12-4a2e-4a12-8c2a-53005971f06f
uuid:277cbc12-4a2e-4a12-8c2a-53005971f06f
issn:0300-3604
doi:10.1023/A:1022614722629

Subject:

carotenoids, chlorophylls, fluorescence kinetics, leaf age, Ricinus communis, and Rosa sp.

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We checked the hypothesis that the transient presence of anthocyanins in young leaves serves a photoprotective function. For this purpose, Rosa sp. and Ricinus communis L., whose young leaves are red to become green upon maturation, were used. Thus, young leaves with high and mature leaves with low anthocyanin contents were analysed concerning their carotenoid (Car) composition and susceptibility to photoinhibition. Cars, including the components of the xanthophyll cycle, had similar contents in young and mature leaves, when expressed on a chlorophyll basis. Yet, when expressed on a leaf area basis or on the assumed photon absorptive capacity of leaves, Cars contents were considerably lower in anthocyanic young leaves. Although this may indicate a low photodissipative potential, red young leaves were considerably less susceptible to photoinhibitory damage. The results are compatible with a photoprotective function of anthocyanins, indicating also that their presence may compensate for a low capacity in the xanthophyll cycle-dependent harmless dissipation of excess excitation energy. and Y. Manetas, A. Drinia, Y. Petropoulou.

Language:

Multiple languages

Rights:

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

Coverage:

349-354

Source:

Photosynthetica | 2002 Volume:40 | Number:3

Harvested from:

CDK

Metadata only:

false