Universität zu Köln

Ponnu, Jathish ORCID: 0000-0002-3276-7068 and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2022). Signaling Mechanisms by Arabidopsis Cryptochromes. Front. Plant Sci., 13. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-462X

Kerner, Konstantin, Nagano, Soshichiro, Lubbe, Annika and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2021). Functional comparison of the WD-repeat domains of SPA1 and COP1 in suppression of photomorphogenesis. Plant Cell Environ., 44 (10). S. 3273 - 3283. HOBOKEN: WILEY. ISSN 1365-3040

Ponnu, Jathish ORCID: 0000-0002-3276-7068 and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2021). Illuminating the COP1/SPA Ubiquitin Ligase: Fresh Insights Into Its Structure and Functions During Plant Photomorphogenesis. Front. Plant Sci., 12. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-462X

Schenk, Tobias, Trimborn, Laura ORCID: 0000-0002-0475-4585, Chen, Song ORCID: 0000-0003-0726-7114, Schenkel, Christian and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2021). Light-induced degradation of SPA2 via its N-terminal kinase domain is required for photomorphogenesis. Plant Physiol., 187 (1). S. 276 - 289. CARY: OXFORD UNIV PRESS INC. ISSN 1532-2548

Frerigmann, Henning, Hoecker, Ute ORCID: 0000-0002-5636-9777 and Gigolashvili, Tamara (2021). New Insights on the Regulation of Glucosinolate Biosynthesis via COP1 and DELLA Proteins in Arabidopsis Thaliana. Front. Plant Sci., 12. LAUSANNE: FRONTIERS MEDIA SA. ISSN 1664-462X

Schwenk, Philipp, Sheerin, David J., Ponnu, Jathish ORCID: 0000-0002-3276-7068, Staudt, Anne-Marie ORCID: 0000-0002-7667-7769, Lesch, Klara L., Lichtenberg, Elisabeth, Medzihradszky, Katalin F., Hoecker, Ute ORCID: 0000-0002-5636-9777, Klement, Eva, Viczian, Andras and Hiltbrunner, Andreas (2021). Uncovering a novel function of the CCR4-NOT complex in phytochrome A-mediated light signalling in plants. eLife, 10. CAMBRIDGE: eLIFE SCIENCES PUBL LTD. ISSN 2050-084X

Kahle, Nikolai, Sheerin, David J., Fischbach, Patrick, Koch, Leonie-Alexa, Schwenk, Philipp, Lambert, Dorothee, Rodriguez, Ryan, Kerner, Konstantin, Hoecker, Ute ORCID: 0000-0002-5636-9777, Zurbriggen, Matias D. ORCID: 0000-0002-3523-2907 and Hiltbrunner, Andreas (2020). COLD REGULATED 27 and 28 are targets of CONSTITUTIVELY PHOTOMORPHOGENIC 1 and negatively affect phytochrome B signalling. Plant J., 104 (4). S. 1038 - 1054. HOBOKEN: WILEY. ISSN 1365-313X

Pham, Vinh Ngoc ORCID: 0000-0001-6802-5827, Paik, Inyup, Hoecker, Ute ORCID: 0000-0002-5636-9777 and Huq, Enamul ORCID: 0000-0001-7692-5139 (2020). Genomic evidence revealsSPA-regulated developmental and metabolic pathways in dark-grownArabidopsisseedlings. Physiol. Plant., 169 (3). S. 380 - 397. HOBOKEN: WILEY. ISSN 1399-3054

Artz, Oliver ORCID: 0000-0002-5708-1281, Dickopf, Stephen, Ranjan, Aashish ORCID: 0000-0003-3447-4442, Kreiss, Melanie, Abraham, Elena Theres, Boll, Vanessa, Rensing, Stefan A. and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2019). Characterization of spa mutants in the moss Physcomitrella provides evidence for functional divergence of SPA genes during the evolution of land plants. New Phytol., 224 (4). S. 1613 - 1627. HOBOKEN: WILEY. ISSN 1469-8137

Ponnu, Jathish ORCID: 0000-0002-3276-7068, Riedel, Tabea, Penner, Eva, Schrader, Andrea ORCID: 0000-0002-3879-7057 and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2019). Cryptochrome 2 competes with COP1 substrates to repress COP1 ubiquitin ligase activity during Arabidopsis photomorphogenesis. Proc. Natl. Acad. Sci. U. S. A., 116 (52). S. 27133 - 27142. WASHINGTON: NATL ACAD SCIENCES. ISSN 0027-8424

Sharma, Ashutosh ORCID: 0000-0002-9137-0888, Sharma, Bhavana, Hayes, Scott ORCID: 0000-0001-8943-6238, Kerner, Konstantin, Hoecker, Ute ORCID: 0000-0002-5636-9777, Jenkins, Gareth, I and Franklin, Keara A. (2019). UVR8 disrupts stabilisation of PIF5 by COP1 to inhibit plant stem elongation in sunlight. Nat. Commun., 10. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

Bhatia, Chitra, Pandey, Ashutosh, Gaddam, Subhash Reddy, Hoecker, Ute ORCID: 0000-0002-5636-9777 and Trivedi, Prabodh Kumar (2018). Low Temperature-Enhanced Flavonol Synthesis Requires Light-Associated Regulatory Components in Arabidopsis thaliana. Plant Cell Physiol., 59 (10). S. 2099 - 2113. OXFORD: OXFORD UNIV PRESS. ISSN 1471-9053

Ordonez-Herrera, Natalia, Trimborn, Laura, Menje, Melanie, Henschel, Monique, Robers, Lennart, Kaufholdt, David ORCID: 0000-0001-7509-2833, Hansch, Robert, Adrian, Jessika, Ponnu, Jathish ORCID: 0000-0002-3276-7068 and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2018). The Transcription Factor COL12 Is a Substrate of the COP1/SPA E3 Ligase and Regulates Flowering Time and Plant Architecture. Plant Physiol., 176 (2). S. 1327 - 1341. ROCKVILLE: AMER SOC PLANT BIOLOGISTS. ISSN 1532-2548

Arthaut, Louis-David, Jourdan, Nathalie, Mteyrek, Ali, Procopio, Maria ORCID: 0000-0002-2521-3067, El-Esawi, Mohamed, d'Harlingue, Alain, Bouchet, Pierre-Etienne, Witczak, Jacques, Ritz, Thorsten ORCID: 0000-0002-2713-539X, Klarsfeld, Andre ORCID: 0000-0001-9293-4887, Birman, Serge, Usselman, Robert J., Hoecker, Ute ORCID: 0000-0002-5636-9777, Martino, Carlos F. and Ahmad, Margaret (2017). Blue-light induced accumulation of reactive oxygen species is a consequence of the Drosophila cryptochrome photocycle. PLoS One, 12 (3). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1932-6203

Balcerowicz, Martin ORCID: 0000-0001-9462-4436, Kerner, Konstantin, Schenkel, Christian and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2017). SPA Proteins Affect the Subcellular Localization of COP1 in the COP1/SPA Ubiquitin Ligase Complex during Photomorphogenesis. Plant Physiol., 174 (3). S. 1314 - 1322. ROCKVILLE: AMER SOC PLANT BIOLOGISTS. ISSN 1532-2548

Hoecker, Ute ORCID: 0000-0002-5636-9777 (2017). The activities of the E3 ubiquitin ligase COP1/SPA, a key repressor in light signaling. Curr. Opin. Plant Biol., 37. S. 63 - 70. LONDON: CURRENT BIOLOGY LTD. ISSN 1879-0356

Holtkotte, Xu, Ponnu, Jathish ORCID: 0000-0002-3276-7068, Ahmad, Margaret and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2017). The blue light-induced interaction of cryptochrome 1 with COP1 requires SPA proteins during Arabidopsis light signaling. PLoS Genet., 13 (10). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1553-7404

Holtkotte, Xu, Dieterle, Stefan, Kokkelink, Leonie, Artz, Oliver, Leson, Lisa, Fittinghoff, Kirsten, Hayama, Ryosuke, Ahmad, Margaret and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2016). Mutations in the N-terminal kinase-like domain of the repressor of photomorphogenesis SPA1 severely impair SPA1 function but not light responsiveness in Arabidopsis. Plant J., 88 (2). S. 205 - 219. HOBOKEN: WILEY-BLACKWELL. ISSN 1365-313X

Chen, Song ORCID: 0000-0003-0726-7114, Wirthmueller, Lennart ORCID: 0000-0003-0667-5343, Stauber, Johannes, Lory, Niels, Holtkotte, Xu, Leson, Lisa, Schenkel, Christian, Ahmad, Margaret and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2016). The functional divergence between SPA1 and SPA2 in Arabidopsis photomorphogenesis maps primarily to the respective N-terminal kinase-like domain. BMC Plant Biol., 16. LONDON: BIOMED CENTRAL LTD. ISSN 1471-2229

Maier, Alexander and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2015). COP1/SPA ubiquitin ligase complexes repress anthocyanin accumulation under low light and high light conditions. Plant Signal. Behav., 10 (1). PHILADELPHIA: TAYLOR & FRANCIS INC. ISSN 1559-2324

Chen, Song ORCID: 0000-0003-0726-7114, Lory, Niels, Stauber, Johannes and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2015). Photoreceptor Specificity in the Light-Induced and COP1-Mediated Rapid Degradation of the Repressor of Photomorphogenesis SPA2 in Arabidopsis. PLoS Genet., 11 (9). SAN FRANCISCO: PUBLIC LIBRARY SCIENCE. ISSN 1553-7404

Ordonez-Herrera, Natalia, Fackendahl, Petra, Yu, Xu, Schaefer, Sabine, Koncz, Csaba and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2015). 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. Mol. Plant., 8 (3). S. 479 - 482. CAMBRIDGE: CELL PRESS. ISSN 1752-9867

Ordonez-Herrera, Natalia, Fackendahl, Petra, Yu, Xu, Schaefer, Sabine, Koncz, Csaba and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2015). 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. Mol. Plant., 8 (3). S. 479 - 482. CAMBRIDGE: CELL PRESS. ISSN 1752-9867

Balcerowicz, Martin ORCID: 0000-0001-9462-4436 and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2014). Auxin - a novel regulator of stomata differentiation. Trends Plant Sci., 19 (12). S. 747 - 750. LONDON: ELSEVIER SCIENCE LONDON. ISSN 1878-4372

Balcerowicz, Martin ORCID: 0000-0001-9462-4436, Ranjan, Aashish ORCID: 0000-0003-3447-4442, Rupprecht, Laura, Fiene, Gabriele and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2014). Auxin represses stomatal development in dark-grown seedlings via Aux/IAA proteins. Development, 141 (16). S. 3165 - 3177. CAMBRIDGE: COMPANY BIOLOGISTS LTD. ISSN 1477-9129