NDLI: Expression of the UVR8 photoreceptor in different tissues reveals tissue-autonomous features of UV-B signalling.

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Expression of the UVR8 photoreceptor in different tissues reveals tissue-autonomous features of UV-B signalling.

Content Provider	Semantic Scholar
Author	Bernula, Péter Crocco, Carlos D. Arongaus, Adriana B. Ulm, Roman Nagy, Ferenc Viczián, András
Copyright Year	2017
Abstract	The Arabidopsis UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8) orchestrates the expression of hundreds of genes, many of which can be associated with UV-B tolerance. UV-B does not efficiently penetrate into tissues, yet UV-B regulates complex growth and developmental responses. To unravel to what extent and how UVR8 located in different tissues contributes to UV-B-induced responses, we expressed UVR8 fused to the YELLOW FLUORESCENT PROTEIN (YFP) under the control of tissue-specific promoters in a uvr8 null mutant background. We show that (1) UVR8 localized in the epidermis plays a major role in regulating cotyledon expansion, and (2) expression of UVR8 in the mesophyll is important to protect adult plants from the damaging effects of UV-B. We found that UV-B induces transcription of selected genes, including the key transcriptional regulator ELONGATED HYPOCOTYL 5 (HY5), only in tissues that express UVR8. Thus, we suggest that tissue-autonomous and simultaneous UVR8 signalling in different tissues mediates, at least partly, developmental and defence responses to UV-B.
Starting Page	1104
Ending Page	1114
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1111/pce.12904
PubMed reference number	28058744
Journal	Medline
Volume Number	40
Issue Number	7
Alternate Webpage(s)	https://www.research.ed.ac.uk/portal/files/30097462/Expression_of_the_UVR8_photoreceptor_in_different_tissues_reveals_tissue_autonomous_features_of_UV_B_signalling.pdf
Journal	Plant, cell & environment
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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