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The greening after extended darkness1 is an N-end rule pathway mutant with high tolerance to submergence and starvation

Title data

Riber, Willi ; Müller, Jana T. ; Visser, Eric J. W. ; Sasidharan, Rashmi ; Voesenek, Laurentius A. C. J. ; Mustroph, Angelika:
The greening after extended darkness1 is an N-end rule pathway mutant with high tolerance to submergence and starvation.
In: Plant Physiology. Vol. 167 (April 2015) Issue 4 . - pp. 1616-1629.
ISSN 1532-2548
DOI: https://doi.org/10.1104/pp.114.253088

Official URL: Volltext

Project information

Project financing: Stifterverband für die deutsche Wissenschaft

Abstract in another language

Plants respond to reductions in internal oxygen concentrations with adaptive mechanisms (for example, modifications of metabolism to cope with reduced supply of ATP). These responses are, at the transcriptional level, mediated by the group VII Ethylene Response Factor transcription factors, which have stability that is regulated by the N-end rule pathway of protein degradation. N-end rule pathway mutants are characterized by a constitutive expression of hypoxia response genes and abscisic acid hypersensitivity. Here, we identify a novel proteolysis6 (prt6) mutant allele, named greening after extended darkness1 (ged1), which was previously discovered in a screen for genomes uncoupled-like mutants and shows the ability to withstand long periods of darkness at the seedling stage. Interestingly, this ethyl methanesulfonate-derived mutant shows unusual chromosomal rearrangement instead of a point mutation. Furthermore, the sensitivity of N-end rule pathway mutants ged1 and prt6-1 to submergence was studied in more detail to understand previously contradicting experiments on this topic. Finally, it was shown that mutants for the N-end rule pathway are generally more tolerant to starvation conditions, such as prolonged darkness or submergence, which was partially associated with carbohydrate conservation.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: PubMed-ID: 25667318
BAYCEER127490
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Physiology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Plant Genetics
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Plant Genetics > Professorship Plant Genetics- Univ.Prof. Dr. Angelika Mustroph
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Molecular Biosciences
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Molecular Biosciences - BZMB
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Date Deposited: 01 Apr 2015 07:14
Last Modified: 27 Apr 2016 08:50
URI: https://eref.uni-bayreuth.de/id/eprint/9618