The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana

Streitner C, Danisman S, Wehrle F, Schöning JC, Alfano JR, Staiger D (2008)
The Plant Journal 56(2): 239-250.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Autor/in
; ; ; ; ;
Abstract / Bemerkung
The RNA binding protein AtGRP7 is part of a circadian slave oscillator in Arabidopsis thaliana that negatively autoregulates its own mRNA, and affects the levels of other transcripts. Here, we identify a novel role for AtGRP7 as a flowering-time gene. An atgrp7-1 T-DNA mutant flowers later than wild-type plants under both long and short days, and independent RNA interference lines with reduced levels of AtGRP7, and the closely related AtGRP8 protein, are also late flowering, particularly in short photoperiods. Consistent with the retention of a photoperiodic response, the transcript encoding the key photoperiodic regulator CONSTANS oscillates with a similar pattern in atgrp7-1 and wild-type plants. In both the RNAi lines and in the atgrp7-1 mutant transcript levels for the floral repressor FLC are elevated. Conversely, in transgenic plants ectopically overexpressing AtGRP7, the transition to flowering is accelerated mainly in short days, with a concomitant reduction in FLC abundance. The late-flowering phenotype of the RNAi lines is suppressed by introducing the flc-3 loss-of-function mutation, suggesting that AtGRP7 promotes floral transition, at least partly by downregulating FLC. Furthermore, vernalization overrides the late-flowering phenotype. Retention of both the photoperiodic response and vernalization response are features of autonomous pathway mutants, suggesting that AtGRP7 is a novel member of the autonomous pathway.
Stichworte
autonomous pathway; regulation; Arabidopsis; flowering time; RNA binding protein; circadian clock; post-transcriptional
Erscheinungsjahr
2008
Zeitschriftentitel
The Plant Journal
Band
56
Ausgabe
2
Seite(n)
239-250
ISSN
0960-7412
eISSN
1365-313X
Page URI
https://pub.uni-bielefeld.de/record/1585878

Zitieren

Streitner C, Danisman S, Wehrle F, Schöning JC, Alfano JR, Staiger D. The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana. The Plant Journal. 2008;56(2):239-250.
Streitner, C., Danisman, S., Wehrle, F., Schöning, J. C., Alfano, J. R., & Staiger, D. (2008). The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana. The Plant Journal, 56(2), 239-250. doi:10.1111/j.1365-313X.2008.03591.x
Streitner, C., Danisman, S., Wehrle, F., Schöning, J. C., Alfano, J. R., and Staiger, D. (2008). The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana. The Plant Journal 56, 239-250.
Streitner, C., et al., 2008. The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana. The Plant Journal, 56(2), p 239-250.
C. Streitner, et al., “The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana”, The Plant Journal, vol. 56, 2008, pp. 239-250.
Streitner, C., Danisman, S., Wehrle, F., Schöning, J.C., Alfano, J.R., Staiger, D.: The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana. The Plant Journal. 56, 239-250 (2008).
Streitner, Corinna, Danisman, Selahattin, Wehrle, Franziska, Schöning, Jan C., Alfano, James R., and Staiger, Dorothee. “The small glycine-rich RNA binding protein AtGRP7 promotes floral transition in Arabidopsis thaliana”. The Plant Journal 56.2 (2008): 239-250.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 18573194
PubMed | Europe PMC

Suchen in

Google Scholar