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Effects of natural solar UV-B radiation on three Arabidopsis accessions are strongly affected by seasonal weather conditions
- Publication Year :
- 2018
- Publisher :
- Elsevier Masson SAS, 2018.
-
Abstract
- Large numbers of studies have reported on the responses of plants that are exposed to a specific dose of ultraviolet-B (UV-B) radiation. However, in the natural environment UV-B is a highly dynamic variable with UV-B intensities depending on, amongst others, geographic, temporal, weather and climatic factors. Furthermore, UV-B effects on plants can potentially be modulated by other environmental variables, and vice versa. This study aimed to characterize UV-B effects on plant morphology and accumulation of UV-screening pigments within the context of an oceanic climate and to assess the potential seasonality of plant UV-B responses. Arabidopsis thaliana was grown outdoors under UV-blocking or transmitting filters. Genotypic differences in the adaptive response to UV-B were assessed at seven time-points over a 12 month period and involved the Arabidopsis accessions Ler, Col-0, and Bur-0. Strong seasonal effects were found on rosette morphology and total UV-screening pigment concentrations across the three accessions. Low temperatures were the main determinant of accumulation of UV-absorbing pigments, with no clear UV-B effect observed at any time throughout the year. There was a significant UV effect on morphology during the summer months, and this was most likely associated with stress. This study shows that UV-effects need to be analysed in the context of weather, and other co-occurring natural factors, and emphasizes the importance of a holistic, multifactorial approach for the investigation of environmentally relevant UV-effects.
- Subjects :
- Morphology
Ultraviolet radiation
Physiology
Ultraviolet Rays
Arabidopsis
Context (language use)
Plant Science
Photosynthesis
Rosette (botany)
Genetics
medicine
Arabidopsis thaliana
Biomass
Weather
Ecotype
Analysis of Variance
biology
UV-Screening pigments
Oceanic climate
Pigments, Biological
Seasonality
medicine.disease
biology.organism_classification
Agronomy
Plant morphology
Regression Analysis
Seasons
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....526d9da356cf5524b27c5f12f252dafd