Photosynthesis and growth response of Calamagrostis arundinacea and C. villosa to enhanced UV-B radiation

Title:

Photosynthesis and growth response of Calamagrostis arundinacea and C. villosa to enhanced UV-B radiation

Creator:

Urban, O., Tůma, I., Holub, P., and Marek, M. V.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:17148759-7b70-4817-a73e-b5a58e16a361
uuid:17148759-7b70-4817-a73e-b5a58e16a361
issn:0300-3604
doi:10.1007/s11099-006-0009-6

Subject:

biomass, field experiment, stomatal conductance, and ultraviolet radiation

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Calamagrostis arundinacea L. (Roth.) and C. villosa (Chaix.) J.F. Gmel are two grass species substituting forest communities on deforested areas in Central Europe. They were exposed to enhanced ultraviolet-B (UV-B, λ = 290-320 nm) radiation during 22 weeks. A system of modulated lamps operating under field conditions was used to simulate a 25 % increase of incident UV-B radiation. CO2 assimilation seemed to be limited by a decrease of stomatal conductance (gs) in C. arundinacea, whereas carboxylation activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) was not affected. On the contrary, gs and RuBPCO activity decreased in C. villosa. These physiological adjustments resulted in growth changes; above-ground biomass decreased in C. villosa (prevailing negative effect) and significantly increased in C. arundinacea (prevailing positive effect) in response to enhanced UV-B radiation. and O. Urban ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

215-220

Source:

Photosynthetica | 2006 Volume:44 | Number:2

Harvested from:

CDK

Metadata only:

false