Both authors contributed significantly to the preparation of this manuscript.
Modifications of a conserved regulatory network involving INDEHISCENT controls multiple aspects of reproductive tissue development in Arabidopsis
Article first published online: 5 NOV 2012
© 2012 CSIRO. New Phytologist © 2012 New Phytologist Trust
Volume 197, Issue 1, pages 73–87, January 2013
How to Cite
Kay, P., Groszmann, M., Ross, J. J., Parish, R. W. and Swain, S. M. (2013), Modifications of a conserved regulatory network involving INDEHISCENT controls multiple aspects of reproductive tissue development in Arabidopsis. New Phytologist, 197: 73–87. doi: 10.1111/j.1469-8137.2012.04373.x
- Issue published online: 26 NOV 2012
- Article first published online: 5 NOV 2012
- Manuscript Accepted: 31 AUG 2012
- Manuscript Received: 28 JUN 2012
- anther and pollen;
- Arabidopsis reproductive development;
- gibberellin (GA);
- HECATE ;
- INDEHISCENT ;
- SHATTERPROOF ;
- valve margin
- Disrupting pollen tube growth and fertilization in Arabidopsis plants leads to reduced seed set and silique size, providing a powerful genetic system with which to identify genes with important roles in plant fertility.
- A transgenic Arabidopsis line with reduced pollen tube growth, seed set and silique growth was used as the progenitor in a genetic screen to isolate suppressors with increased seed set and silique size.
- This screen generated a new allele of INDEHISCENT (IND), a gene originally identified by its role in valve margin development and silique dehiscence (pod shatter). IND forms part of a regulatory network that involves several other transcriptional regulators and involves the plant hormones GA and auxin. Using GA and auxin mutants that alter various aspects of reproductive development, we have identified novel roles for IND, its paralogue HECATE3, and the MADS box proteins SHATTERPROOF1/2 in flower and fruit development.
- These results suggest that modified forms of the regulatory network originally described for the Arabidopsis valve margin, which include these genes and/or their recently evolved paralogs, function in multiple components of GA/auxin-regulated reproductive development.