The photoreceptor UVR8 mediates the perception of both UV-B and UV-A wavelengths up to 350 nm of sunlight with responsivity moderated by cryptochromes

Rai, Neha (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

O'Hara, Andrew, 1983- (author): Örebro universitet,Institutionen för naturvetenskap och teknik,Örebro Life Science Center

Farkas, Daniel (author): School of Science and Technology, Örebro University, Örebro, Sweden,Örebro Life Science Center

Safronov, Omid (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

Ratanasopa, Khuanpiroon (author): School of Science and Technology, Örebro University, Örebro, Sweden,Örebro Life Science Center

Wang, Fang (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

Lindfors, Anders V. (author): Finnish Meteorological Institute, Meteorological Research, Helsinki, Finland

Jenkins, Gareth I. (author): Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary an Sciences, University of Glasgow, Glasgow, United Kingdom

Lehto, Tarja (author): School of Forest Sciences, University of Eastern Finland, Joensuu, Finland

Salojärvi, Jarkko (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland; School of Biological Sciences, Nanyang Technological University, Singapore, Singapore

Brosché, Mikael (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

Strid, Åke, Professor, 1960- (author): Örebro universitet,Institutionen för naturvetenskap och teknik,Örebro Life Science Center

Aphalo, Pedro J. (author): Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

Morales, Luis O., 1974- (author): Örebro universitet,Institutionen för naturvetenskap och teknik,Organismal and Evolutionary Biology, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland

(creator_code:org_t)

2020-03-24
2020
English.
In: Plant, Cell and Environment. - : John Wiley & Sons. - 0140-7791 .- 1365-3040. ; 43:6, s. 1513-1527

Related links:: https://doi.org/10.1...; show more...; https://oru.diva-por... (primary) (Raw object); https://onlinelibrar...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

The photoreceptors UV RESISTANCE LOCUS 8 (UVR8) and CRYPTOCHROMES 1 and 2 (CRYs) play major roles in the perception of UV-B (280–315 nm) and UV-A/blue radiation (315–500 nm), respectively. However, it is poorly understood how they function in sunlight. The roles of UVR8 and CRYs were assessed in a factorial experiment with Arabidopsis thaliana wild-type and photoreceptor mutants exposed to sunlight for 6 h or 12 h under five types of filters with cut-offs in UV and blue-light regions. Transcriptome-wide responses triggered by UV-B and UV-A wavelengths shorter than 350 nm (UV-Asw) required UVR8 whereas those induced by blue and UV-A wavelengths longer than 350 nm (UV-Alw) required CRYs. UVR8 modulated gene expression in response to blue light while lack of CRYs drastically enhanced gene expression in response to UV-B and UV-Asw. These results agree with our estimates of photons absorbed by these photoreceptors in sunlight and with in vitro monomerization of UVR8 by wavelengths up to 335 nm. Motif enrichment analysis predicted complex signaling downstream of UVR8 and CRYs. Our results highlight that it is important to use UV waveband definitions specific to plants’ photomorphogenesis as is routinely done in the visible region.

NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)

By the author/editor: Rai, Neha; O'Hara, Andrew, ...; Farkas, Daniel; Safronov, Omid; Ratanasopa, Khua ...; Wang, Fang; show more...; Lindfors, Anders ...; Jenkins, Gareth ...; Lehto, Tarja; Salojärvi, Jarkk ...; Brosché, Mikael; Strid, Åke, Prof ...; Aphalo, Pedro J.; Morales, Luis O. ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Biochemistry and ...

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