Characterization of a recently evolved flavonol-phenylacyltransferase gene provides signatures of natural light selection in Brassicaceae
| Autor: | Rainer Hoefgen, Ronan Sulpice, Regina Wendenburg, Ryo Nakabayashi, Alisdair R. Fernie, Mutsumi Watanabe, Hirofumi Ishihara, Takayuki Tohge, Kazuki Saito, Mark Stitt, Hiromitsu Takayama |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Flavonols Ultraviolet Rays Sequence analysis Science Arabidopsis General Physics and Astronomy Introgression Locus (genetics) Flowers arabidopsis-thaliana Genes Plant Article General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Metabolomics Gene Expression Regulation Plant Gene Duplication evolution acyltransferase Botany Protein Isoforms Selection Genetic uv-b radiation Gene transcriptome coexpression analysis Polymorphism Genetic Multidisciplinary biology Arabidopsis Proteins pathway Plant physiology Brassicaceae General Chemistry 15. Life on land biology.organism_classification Alternative Splicing 030104 developmental biology Evolutionary biology genome-wide association identification metabolome biosynthesis Acyltransferases |
| Zdroj: | Nature Communications Europe PubMed Central Nature Communications, Vol 7, Iss 1, Pp 1-11 (2016) |
| ISSN: | 2041-1723 |
| Popis: | Incidence of natural light stress renders it important to enhance our understanding of the mechanisms by which plants protect themselves from harmful effects of UV-B irradiation, as this is critical for fitness of land plant species. Here we describe natural variation of a class of phenylacylated-flavonols (saiginols), which accumulate to high levels in floral tissues of Arabidopsis. They were identified in a subset of accessions, especially those deriving from latitudes between 16° and 43° North. Investigation of introgression line populations using metabolic and transcript profiling, combined with genomic sequence analysis, allowed the identification of flavonol-phenylacyltransferase 2 (FPT2) that is responsible for the production of saiginols and conferring greater UV light tolerance in planta. Furthermore, analysis of polymorphism within the FPT duplicated region provides an evolutionary framework of the natural history of this locus in the Brassicaceae. Protection from UV-B is critical for land plant survival. Here Tohge et al. show that saiginols, a novel class of flavonols that efficiently absorb UV-B, accumulate in Arabidopsis accessions collected from high irradiance regions and identify a flavonol phenylacyltransferase gene required for saiginol production. |
| Databáze: | OpenAIRE |
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