ORE1 balances leaf senescence against maintenance by antagonizing G2-like-mediated transcription
- Leaf senescence is a key physiological process in all plants. Its onset is tightly controlled by transcription factors, of which NAC factor ORE1 (ANAC092) is crucial in Arabidopsis thaliana. Enhanced expression of ORE1 triggers early senescence by controlling a downstream gene network that includes various senescence-associated genes. Here, we report that unexpectedly ORE1 interacts with the G2-like transcription factors GLK1 and GLK2, which are important for chloroplast development and maintenance, and thereby for leaf maintenance. ORE1 antagonizes GLK transcriptional activity, shifting the balance from chloroplast maintenance towards deterioration. Our finding identifies a new mechanism important for the control of senescence by ORE1.
| Author details: | Mamoona Rauf, Muhammad Arif, Hakan Dortay, Lilian P. Matallana-Ramirez, Mark T. Waters, Hong Gil Nam, Pyung-Ok Lim, Bernd Müller-RöberORCiDGND, Salma BalazadehORCiDGND |
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| DOI: | https://doi.org/10.1038/embor.2013.24 |
| ISSN: | 1469-221X |
| Title of parent work (English): | EMBO reports |
| Publisher: | Nature Publ. Group |
| Place of publishing: | London |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2013 |
| Publication year: | 2013 |
| Release date: | 2017/03/26 |
| Tag: | chloroplast; protein-protein interaction; senescence; transcription factor |
| Volume: | 14 |
| Issue: | 4 |
| Number of pages: | 7 |
| First page: | 382 |
| Last Page: | 388 |
| Funding institution: | Deutsche Forschungsgemeinschaft [FOR 948, MU 1199/14-1] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
| Peer review: | Referiert |
