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U. Hoecker · SciRah

Researcher profile · Semantic Scholar

U. Hoecker

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U. Hoecker — researcher profile on SciRah

h-index: 40
Works: 74
Citations: 5,604

Most-cited papers

The COP1-SPA1 interaction defines a critical step in phytochrome A-mediated regulation of HY5 activity.
Y. Saijo, James A. Sullivan, Hai-Yang Wang, Jian-Ping Yang +5 more
2003Genes & Development467 citations Open access
Semantic Scholar
Light and the E3 ubiquitin ligase COP1/SPA control the protein stability of the MYB transcription factors PAP1 and PAP2 involved in anthocyanin accumulation in Arabidopsis.
Alexander Maier, Andrea Schrader, Leonie Kokkelink, C. Falke +6 more
2013The Plant Journal372 citations
Semantic Scholar
Arabidopsis SPA proteins regulate photoperiodic flowering and interact with the floral inducer CONSTANS to regulate its stability
S. Laubinger, Virginie Marchal, José Gentilhomme, S. Wenkel +6 more
2006Development332 citations Open access
Semantic Scholar
Light Regulates COP1-Mediated Degradation of HFR1, a Transcription Factor Essential for Light Signaling in Arabidopsis
Jian-Ping Yang, Rongcheng Lin, James A. Sullivan, U. Hoecker +4 more
2005The Plant Cell Online320 citations
Semantic Scholar
SPA1, a WD-repeat protein specific to phytochrome A signal transduction.
U. Hoecker, J. Tepperman, P. Quail
1999Science274 citations
Semantic Scholar
Biochemical Characterization of Arabidopsis Complexes Containing CONSTITUTIVELY PHOTOMORPHOGENIC1 and SUPPRESSOR OF PHYA Proteins in Light Control of Plant Development[W]
Dan-Meng Zhu, Alexander Maier, Jae-Hoon Lee, S. Laubinger +5 more
2008The Plant Cell Online242 citations Open access
Semantic Scholar
Integrated control of seed maturation and germination programs by activator and repressor functions of Viviparous-1 of maize.
U. Hoecker, I. Vasil, D. R. McCarty
1995Genes & Development232 citations Open access
Semantic Scholar
The SPA Quartet: A Family of WD-Repeat Proteins with a Central Role in Suppression of Photomorphogenesis in Arabidopsis
S. Laubinger, Kirsten Fittinghoff, U. Hoecker
2004The Plant Cell Online230 citations Open access
Semantic Scholar
The activities of the E3 ubiquitin ligase COP1/SPA, a key repressor in light signaling.
U. Hoecker
2017Current opinion in plant biology205 citations
Semantic Scholar
SPA1: A New Genetic Locus Involved in Phytochrome A–Specific Signal Transduction
U. Hoecker, Yong Xu, P. Quail
1998The Plant Cell186 citations Open access
Semantic Scholar
The phytochrome A-specific signaling intermediate SPA1 interacts directly with COP1, a constitutive repressor of light signaling in Arabidopsis.
U. Hoecker, P. Quail
2001Journal of Biological Chemistry153 citations Open access
Semantic Scholar
Arabidopsis COP1/SPA1 complex and phytochrome A signaling intermediates associate with distinct phosphorylated forms of phytochrome A in balancing signal propagation and attenuation
Y. Saijo, Dan-Meng Zhu, Ji-Gang Li, V. Rubio +5 more
2008Molecules and Cells128 citations Open access
Semantic Scholar
CUL4 forms an E3 ligase with COP1 and SPA to promote light-induced degradation of PIF1
Ling Zhu, Qingyun Bu, Xiaosa Xu, I. Paik +4 more
2015Nature Communications118 citations Open access
Semantic Scholar
The SPA1-like proteins SPA3 and SPA4 repress photomorphogenesis in the light.
S. Laubinger, U. Hoecker
2003The Plant Journal103 citations Open access
Semantic Scholar
Cryptochrome 2 competes with COP1 substrates to repress COP1 ubiquitin ligase activity during Arabidopsis photomorphogenesis
J. Ponnu, Tabea Riedel, Eva Penner, Andrea Schrader +1 more
2019Proceedings of the National Academy of Sciences of the United States of America99 citations Open access
Semantic Scholar
Synergistic interactions of red and blue light in the control of Arabidopsis gene expression and development
R. Sellaro, U. Hoecker, M. Yanovsky, J. Chory +1 more
2009Current Biology94 citations Open access
Semantic Scholar
Regulated proteolysis in light signaling.
U. Hoecker
2005Current opinion in plant biology91 citations
Semantic Scholar
RED1 is necessary for phytochrome B-mediated red light-specific signal transduction in Arabidopsis.
D. Wagner, U. Hoecker, P. Quail
1997The Plant Cell91 citations Open access
Semantic Scholar
Illuminating the COP1/SPA Ubiquitin Ligase: Fresh Insights Into Its Structure and Functions During Plant Photomorphogenesis
J. Ponnu, U. Hoecker
2021Frontiers in Plant Science86 citations Open access
Semantic Scholar
Functional and expression analysis of Arabidopsis SPA genes during seedling photomorphogenesis and adult growth.
Kirsten Fittinghoff, S. Laubinger, Markus Nixdorf, Petra Fackendahl +3 more
2006The Plant Journal85 citations
Semantic Scholar
COP1/SPA ubiquitin ligase complexes repress anthocyanin accumulation under low light and high light conditions
Alexander Maier, U. Hoecker
2014Plant Signalling & Behavior81 citations Open access
Semantic Scholar
Repression of light signaling by Arabidopsis SPA1 involves post-translational regulation of HFR1 protein accumulation.
Jian-Ping Yang, Rongcheng Lin, U. Hoecker, Bo-Lin Liu +2 more
2005The Plant Journal80 citations Open access
Semantic Scholar
Auxin represses stomatal development in dark-grown seedlings via Aux/IAA proteins
Martin Balcerowicz, Aashish Ranjan, Laura C. Rupprecht, Gabriele Fiene +1 more
2014Development78 citations Open access
Semantic Scholar
UVR8 disrupts stabilisation of PIF5 by COP1 to inhibit plant stem elongation in sunlight
Ashutosh Sharma, B. Sharma, S. Hayes, Konstantin Kerner +3 more
2019Nature Communications77 citations Open access
Semantic Scholar
Low Temperature-Enhanced Flavonol Synthesis Requires Light-Associated Regulatory Components in Arabidopsis thaliana
C. Bhatia, Ashutosh Pandey, Subhash Reddy Gaddam, U. Hoecker +1 more
2018Plant and Cell Physiology77 citations Open access
Semantic Scholar
The photomorphogenesis-related mutant red1 is defective in CYP83B1, a red light-induced gene encoding a cytochrome P450 required for normal auxin homeostasis
U. Hoecker, G. Toledo-Ortiz, J. Bender, P. Quail
2004Planta74 citations
Semantic Scholar
Environmental gradients reveal stress hubs pre-dating plant terrestrialization
Armin Dadras, Janine M. R. Fürst-Jansen, T. Darienko, Denis Krone +17 more
2022bioRxiv71 citations Open access
Semantic Scholar
Signaling Mechanisms by Arabidopsis Cryptochromes
J. Ponnu, U. Hoecker
2022Frontiers in Plant Science69 citations Open access
Semantic Scholar
The Transcription Factor COL12 Is a Substrate of the COP1/SPA E3 Ligase and Regulates Flowering Time and Plant Architecture1
Natalia Ordoñez-Herrera, Laura Trimborn, Melanie Menje, M. Henschel +6 more
2017Plant Physiology67 citations Open access
Semantic Scholar
Arabidopsis COP1 and SPA Genes Are Essential for Plant Elongation But Not for Acceleration of Flowering Time in Response to a Low Red Light to Far-Red Light Ratio1[W]
Sebastian Rolauffs, Petra Fackendahl, J. Sahm, Gabriele Fiene +1 more
2012Plant Physiology64 citations Open access
Semantic Scholar
Photoreceptor Specificity in the Light-Induced and COP1-Mediated Rapid Degradation of the Repressor of Photomorphogenesis SPA2 in Arabidopsis
Song Chen, Niels Lory, Johannes Stauber, U. Hoecker
2015PLoS Genetics61 citations Open access
Semantic Scholar
Degradation of Arabidopsis CRY2 Is Regulated by SPA Proteins and Phytochrome A[W]
G. Weidler, S. zur Oven-Krockhaus, Michael Heunemann, C. Orth +4 more
2012The Plant Cell59 citations Open access
Semantic Scholar
Light exposure of Arabidopsis seedlings causes rapid de-stabilization as well as selective post-translational inactivation of the repressor of photomorphogenesis SPA2.
Martin Balcerowicz, Kirsten Fittinghoff, L. Wirthmueller, Alexander Maier +4 more
2011The Plant Journal58 citations Open access
Semantic Scholar
The blue light-induced interaction of cryptochrome 1 with COP1 requires SPA proteins during Arabidopsis light signaling
Xu Holtkotte, J. Ponnu, Margaret Ahmad, U. Hoecker
2017PLoS Genetics55 citations Open access
Semantic Scholar
Signaling from the embryo conditions Vp1-mediated repression of alpha-amylase genes in the aleurone of developing maize seeds.
U. Hoecker, I. Vasil, Donald R. McCarty
1999The Plant Journal55 citations
Semantic Scholar
Blue-light induced accumulation of reactive oxygen species is a consequence of the Drosophila cryptochrome photocycle
Louis-david Arthaut, N. Jourdan, Ali Mteyrek, M. Procopio +11 more
2017PLoS ONE54 citations Open access
Semantic Scholar
Functional analysis of COP1 and SPA orthologs from Physcomitrella and rice during photomorphogenesis of transgenic Arabidopsis reveals distinct evolutionary conservation
Aashish Ranjan, Stephen Dickopf, K. Ullrich, S. Rensing +1 more
2014BMC Plant Biology51 citations Open access
Semantic Scholar
The Arabidopsis repressor of light signaling SPA1 acts in the phloem to regulate seedling de-etiolation, leaf expansion and flowering time
Aashish Ranjan, Gabriele Fiene, Petra Fackendahl, U. Hoecker
2011Development46 citations
Semantic Scholar
SPA Proteins Affect the Subcellular Localization of COP1 in the COP1/SPA Ubiquitin Ligase Complex during Photomorphogenesis1
Martin Balcerowicz, Konstantin Kerner, Christian Schenkel, U. Hoecker
2017Plant Physiology45 citations Open access
Semantic Scholar
A cop1 spa mutant deficient in COP1 and SPA proteins reveals partial co-action of COP1 and SPA during Arabidopsis post-embryonic development and photomorphogenesis.
Natalia Ordoñez-Herrera, Petra Fackendahl, Xu-Hong Yu, Sabine Schaefer +2 more
2015Molecular Plant40 citations Open access
Semantic Scholar
Anterograde signaling controls plastid transcription via sigma factors separately from nuclear photosynthesis genes
Youra Hwang, Soeun Han, Chan Yul Yoo, Liu Hong +7 more
2022Nature Communications37 citations Open access
Semantic Scholar
SPA1, a component of phytochrome A signal transduction, regulates the light signaling current
Rosalinde-Louise Baumgardt, Karina A. Oliverio, J. Casal, U. Hoecker
2002Planta35 citations
Semantic Scholar
Auxin--a novel regulator of stomata differentiation.
Martin Balcerowicz, U. Hoecker
2014Trends in Plant Science33 citations
Semantic Scholar
SPA1 and DET1 act together to control photomorphogenesis throughout plant development
Markus Nixdorf, U. Hoecker
2010Planta32 citations
Semantic Scholar
Phosphorylation of Arabidopsis UVR8 photoreceptor modulates protein interactions and responses to UV-B radiation
Wei Liu, Giovanni Giuriani, Anezka Havlikova, Dezhi Li +7 more
2024Nature Communications28 citations Open access
Semantic Scholar
Light-induced growth promotion by SPA1 counteracts phytochrome-mediated growth inhibition during de-etiolation.
B. Parks, U. Hoecker, Edgar P. Spalding
2001Plant Physiology25 citations Open access
Semantic Scholar
Characterization of spa mutants in the moss Physcomitrella provides evidence for functional divergence of SPA genes during the evolution of land plants.
O. Artz, Stephen Dickopf, Aashish Ranjan, Melanie Kreiss +4 more
2019New Phytologist24 citations
Semantic Scholar
Uncovering a novel function of the CCR4-NOT complex in phytochrome A-mediated light signalling in plants
Philipp Schwenk, David J. Sheerin, J. Ponnu, Anne-Marie Staudt +7 more
2021eLife20 citations Open access
Semantic Scholar
Mutations in the N-terminal kinase-like domain of the repressor of photomorphogenesis SPA1 severely impair SPA1 function but not light responsiveness in Arabidopsis.
Xu Holtkotte, S. Dieterle, Leonie Kokkelink, Oliver Artz +5 more
2016The Plant Journal19 citations Open access
Semantic Scholar
The functional divergence between SPA1 and SPA2 in Arabidopsis photomorphogenesis maps primarily to the respective N-terminal kinase-like domain
Song Chen, L. Wirthmueller, Johannes Stauber, Niels Lory +5 more
2016BMC Plant Biology18 citations Open access
Semantic Scholar

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