Phytochrome-interacting transcription factors PIF4 and PIF5 induce leaf senescence in Arabidopsis

Yasuhito Sakuraba, Jinkil Jeong, Min-Young Kang, Junghyun Kim, Nam-Chon Paek () and Giltsu Choi ()
Additional contact information
Yasuhito Sakuraba: Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University
Jinkil Jeong: KAIST
Min-Young Kang: Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University
Junghyun Kim: KAIST
Nam-Chon Paek: Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University
Giltsu Choi: KAIST

Nature Communications, 2014, vol. 5, issue 1, 1-13

Abstract: Abstract Plants initiate senescence to shed photosynthetically inefficient leaves. Light deprivation induces leaf senescence, which involves massive transcriptional reprogramming to dismantle cellular components and remobilize nutrients. In darkness, intermittent pulses of red light can inhibit senescence, likely via phytochromes. However, the precise molecular mechanisms transducing the signals from light perception to the inhibition of senescence remain elusive. Here, we show that in Arabidopsis, dark-induced senescence requires phytochrome-interacting transcription factors PIF4 and PIF5 (PIF4/PIF5). ELF3 and phytochrome B inhibit senescence by repressing PIF4/PIF5 at the transcriptional and post-translational levels, respectively. PIF4/PIF5 act in the signalling pathways of two senescence-promoting hormones, ethylene and abscisic acid, by directly activating expression of EIN3, ABI5 and EEL. In turn, PIF4, PIF5, EIN3, ABI5 and EEL directly activate the expression of the major senescence-promoting NAC transcription factor ORESARA1, thus forming multiple, coherent feed-forward loops. Our results reveal how classical light signalling connects to senescence in Arabidopsis.

Date: 2014
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/ncomms5636 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5636

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms5636

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().