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Arabidopsis Flavonoid Mutants Are Hypersensitive to UV-B Irradiation.
Open accessAbstract
Increases in the terrestrial levels of ultraviolet-B (UV-B) radiation (280 to 320 nm) due to diminished stratospheric ozone have prompted an investigation of the protective mechanisms that contribute to UV-B tolerance in plants. In response to UV-B stress, flowering plants produce a variety of UV-absorptive secondary products derived from phenylalanine. Arabidopsis mutants with defects in the synthesis of these compounds were tested for UV-B sensitivity. The transparent testa-4 (tt4) mutant, which has reduced flavonoids and normal levels of sinapate esters, is more sensitive to UV-B than the wild type when grown under high UV-B irradiance. The tt5 and tt6 mutants, which have reduced levels of UV-absorptive leaf flavonoids and the monocyclic sinapic acid ester phenolic compounds, are highly sensitive to the damaging effects of UV-B radiation. These results demonstrate that both flavonoids and other phenolic compounds play important roles in vivo in plant UV-B protection.
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Citations
Cited by
Orchestrated Transcription of Key Pathways in Arabidopsis by the Circadian Clock
Harmer, S. L., Hogenesch, J. B., Straume, M., Chang, H.-S., Han, B., Zhu, T., Wang, X., Kreps, J. A., & Kay, S. A. (2000) · Science · doi:10.1126/science.290.5499.2110 · Cited by 1,640
Two Distinct Sources of Elicited Reactive Oxygen Species in Tobacco Epidermal Cells.
Allan, A. C., & Fluhr, R. (1997) · The Plant Cell · doi:10.1105/tpc.9.9.1559 · Cited by 555
Effects of increased solar ultraviolet radiation on terrestrial ecosystems
Caldwell, M. M., Björn, L. O., Bornman, J. F., Flint, S. D., Kulandaivelu, G., Teramura, A. H., & Tevini, M. (1998) · Journal of Photochemistry and Photobiology B: Biology · doi:10.1016/s1011-1344(98)00184-5 · Cited by 550
Effects of UV-B radiation on photosynthesis and growth of terrestrial plants
Teramura, A. H., & Sullivan, J. H. (1994) · Photosynthesis Research · doi:10.1007/bf00014599 · Cited by 490
DNA DAMAGE AND REPAIR IN PLANTS
Britt, A. B. (1996) · Annual Review of Plant Physiology and Plant Molecular Biology · doi:10.1146/annurev.arplant.47.1.75 · Cited by 486
Metadata
- Authors
- Li, J., Ou-Lee, T. M., Raba, R., Amundson, R. G., & Last, R. L.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 1993-02-01
- Volume
- 5
- Issue
- 2
- Pages
- 171-179
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2160607514
- Cited by
- 937
- References
- 0
- FWCI
- 40.64
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Arabidopsis Flavonoid Mutants Are Hypersensitive to UV-B Irradiation. https://app.cochat.ai/papers/10.1105/tpc.5.2.171
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- Li, J., Ou-Lee, T. M., Raba, R., Amundson, R. G., & Last, R. L. (1993). Arabidopsis Flavonoid Mutants Are Hypersensitive to UV-B Irradiation. The Plant Cell. https://doi.org/10.1105/tpc.5.2.171
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
