UNIGE document Scientific Article
previous document  unige:94657  next document
add to browser collection
Title

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

Authors
Bernula, Péter
Nagy, Ferenc
Viczián, András
Published in Plant, Cell and Environment. 2017, vol. 40, no. 7, p. 1104-1114
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.
Identifiers
PMID: 28058744
Full text
Structures
Research group Groupe Ulm
Project FNS: 31003A_153475
Citation
(ISO format)
BERNULA, Péter et al. Expression of the UVR8 photoreceptor in different tissues reveals tissue-autonomous features of UV-B signalling. In: Plant, Cell and Environment, 2017, vol. 40, n° 7, p. 1104-1114. https://archive-ouverte.unige.ch/unige:94657

22 hits

0 download

Update

Deposited on : 2017-06-06

Export document
Format :
Citation style :