The transcription factors BEL1 and SPL are required for cytokinin and auxin signaling during ovule development in Arabidopsis

S. Bencivenga, S. Simonini, E. Benková, L. Colombo, Plant Cell 24 (2012) 2886–2897.

Download
No fulltext has been uploaded. References only!

Journal Article | Published
Author
; ; ;
Abstract
Hormones, such as auxin and cytokinin, are involved in the complex molecular network that regulates the coordinated development of plant organs. Genes controlling ovule patterning have been identified and studied in detail; however, the roles of auxin and cytokinin in ovule development are largely unknown. Here we show that key cytokinin pathway genes, such as isopentenyltransferase and cytokinin receptors, are expressed during ovule development. Also, in a cre1-12 ahk2-2 ahk3-3 triple mutant with severely reduced cytokinin perception, expression of the auxin efflux facilitator PIN-FORMED 1 (PIN1) was severely reduced. In sporocyteless/nozzle (spl/nzz) mutants, which show a similar phenotype to the cre1-12 ahk2-2 ahk3-3 triple mutant, PIN1 expression is also reduced. Treatment with the exogenous cytokinin N6-benzylaminopurine also altered both auxin distribution and patterning of the ovule; this process required the homeodomain transcription factor BELL1 (BEL1). Thus, this article shows that cytokinin regulates ovule development through the regulation of PIN1. Furthermore, the transcription factors BEL1 and SPL/NZZ, previously described as key regulators of ovule development, are needed for the auxin and cytokinin signaling pathways for the correct patterning of the ovule.
Publishing Year
Date Published
2012-07-01
Journal Title
Plant Cell
Volume
24
Issue
7
Page
2886 - 2897
IST-REx-ID

Cite this

Bencivenga S, Simonini S, Benková E, Colombo L. The transcription factors BEL1 and SPL are required for cytokinin and auxin signaling during ovule development in Arabidopsis. Plant Cell. 2012;24(7):2886-2897. doi:10.1105/tpc.112.100164
Bencivenga, S., Simonini, S., Benková, E., & Colombo, L. (2012). The transcription factors BEL1 and SPL are required for cytokinin and auxin signaling during ovule development in Arabidopsis. Plant Cell, 24(7), 2886–2897. https://doi.org/10.1105/tpc.112.100164
Bencivenga, Stefano, Sara Simonini, Eva Benková, and Lucia Colombo. “The Transcription Factors BEL1 and SPL Are Required for Cytokinin and Auxin Signaling during Ovule Development in Arabidopsis.” Plant Cell 24, no. 7 (2012): 2886–97. https://doi.org/10.1105/tpc.112.100164.
S. Bencivenga, S. Simonini, E. Benková, and L. Colombo, “The transcription factors BEL1 and SPL are required for cytokinin and auxin signaling during ovule development in Arabidopsis,” Plant Cell, vol. 24, no. 7, pp. 2886–2897, 2012.
Bencivenga S, Simonini S, Benková E, Colombo L. 2012. The transcription factors BEL1 and SPL are required for cytokinin and auxin signaling during ovule development in Arabidopsis. Plant Cell. 24(7), 2886–2897.
Bencivenga, Stefano, et al. “The Transcription Factors BEL1 and SPL Are Required for Cytokinin and Auxin Signaling during Ovule Development in Arabidopsis.” Plant Cell, vol. 24, no. 7, American Society of Plant Biologists, 2012, pp. 2886–97, doi:10.1105/tpc.112.100164.

Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar