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dc.contributor.author M. G. en_US
dc.contributor.author T. H. en_US
dc.contributor.author J. T. en_US
dc.contributor.author N. M. en_US
dc.date.accessioned 2009-11-25T09:40:56Z
dc.date.available 2009-11-25T09:40:56Z
dc.date.issued 2001-07 en_US
dc.identifier http://dx.doi.org/10.1016/S1011-1344(01)00140-3 en_US
dc.identifier.citation Holmes , M G , Attridge , T H , Higgins , J T & Cooley , N M 2001 , ' Ecotypic differences in responses of Arabidopsis thaliana L. to elevated polychromatic UV-A and UV-B+A radiation in the natural environment: a positive correlation between UV-B+A inhibition and growth rate ' Journal of Photochemistry and Photobiology B: Biology , vol 60 , no. 2-3 , pp. 2-3 . , 10.1016/S1011-1344(01)00140-3 en_US
dc.identifier.other PURE: 129498 en_US
dc.identifier.other dspace: 2160/3598 en_US
dc.identifier.uri http://hdl.handle.net/2160/3598
dc.description.abstract The effects of supplementary ultraviolet-A (UV-A) and ultraviolet-B+A (UV-B+A) in the natural environment on the growth and morphology of various ecotypes of Arabidopsis thaliana were investigated. The ecotypes investigated were Columbia (Col-4), Landsberg erecta (Ler-0), Cvi-0, Wassilewskija, Enkheim-D, Aa-0 and Di-1. The mutant hy-4 was also used. Results varied with the radiation treatment, ecotype and parameter measured. Plants subjected to elevated UV-A were both insensitive (all parameters Cvi-0 and Col-4) and sensitive. When responses to UV-A occurred they were mostly inhibitory (all significant responses of Di-1 and Enkheim-D, most parameters of Wassilewskija, and some parameters of hy-4), however, promotive affects were observed for some parameters of Aa-0 and Ler-0. Supplementary UV-B+A inhibited all parameters of Di-1 and Enkheim-D and most parameters of Col-4, Ler-0 and hy-4, but Wassilewskija, Aa-0 and Cvi-0 were mostly insensitive. The magnitude of the UV-B+A response varied with ecotype (compare Di-1 with Ler-0). Some ecotypes were sensitive to UV-A but not UV-B+A (Aa-0), whereas others (Ler-0, Col-4) show the opposite sensitivities. A linear relationship is reported between the degree of UV-B+A inhibition of each ecotype and growth rate. The higher the growth rate the more susceptible the ecotype is to UV-B+A inhibition. This relationship holds for the majority of growth parameters measured. en_US
dc.format.extent 2 en_US
dc.relation.ispartof Journal of Photochemistry and Photobiology B: Biology en_US
dc.subject Arabidopsis thaliana en_US
dc.subject Ecotypes en_US
dc.subject Growth and morphology en_US
dc.subject Ultraviolet-A en_US
dc.subject Ultraviolet-B en_US
dc.title Ecotypic differences in responses of Arabidopsis thaliana L. to elevated polychromatic UV-A and UV-B+A radiation in the natural environment: a positive correlation between UV-B+A inhibition and growth rate en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US


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