The reduction of aboveground Calamagrostis epigeios mass and tiller number by enhanced UV-B in a dune-grassland ecosystem

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. CO 2 assimilation seemed to be limited by a decrease of stomatal conductance (g s ) in C. arundinacea, whereas carboxylation activity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) was not affected. On the contrary, g s 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.

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

Urban

Tůma

Holub

et al. 2006

Photosynt.

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UV-B reduction and excess: Management strategies regarding Coffea sp. crop

Bernado,

Santos,

Vale

et al. 2024

Scientia Horticulturae

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The role of UV-B radiation in aquatic and terrestrial ecosystems—an experimental and functional analysis of the evolution of UV-absorbing compounds

Rozema

Björn

Bornman

et al. 2002

Journal of Photochemistry and Photobiology B: Biology

385

229

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The reduction of aboveground Calamagrostis epigeios mass and tiller number by enhanced UV-B in a dune-grassland ecosystem

Cited by 9 publications

References 58 publications

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

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

UV-B reduction and excess: Management strategies regarding Coffea sp. crop

The role of UV-B radiation in aquatic and terrestrial ecosystems—an experimental and functional analysis of the evolution of UV-absorbing compounds

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