Auxin-related gene families in abiotic stress response in Sorghum bicolor
Top Cited Papers
- 25 May 2010
- journal article
- Published by Springer Science and Business Media LLC in Functional & Integrative Genomics
- Vol. 10 (4), 533-546
- https://doi.org/10.1007/s10142-010-0174-3
Abstract
Sorghum, a C4 model plant, has been studied to develop an understanding of the molecular mechanism of resistance to stress. The auxin-response genes, auxin/indole-3-acetic acid (Aux/IAA), auxin-response factor (ARF), Gretchen Hagen3 (GH3), small auxin-up RNAs, and lateral organ boundaries (LBD), are involved in growth/development and stress/defense responses in Arabidopsis and rice, but they have not been studied in sorghum. In the present paper, the chromosome distribution, gene duplication, promoters, intron/exon, and phylogenic relationships of Aux/IAA, ARF, GH3, and LBD genes in sorghum are presented. Furthermore, real-time PCR analysis demonstrated these genes are differently expressed in leaf/root of sorghum and indicated the expression profile of these gene families under IAA, brassinosteroid (BR), salt, and drought treatments. The SbGH3 and SbLBD genes, expressed in low level under natural condition, were highly induced by salt and drought stress consistent with their products being involved in both abiotic stresses. Three genes, SbIAA1, SbGH3-13, and SbLBD32, were highly induced under all the four treatments, IAA, BR, salt, and drought. The analysis provided new evidence for role of auxin in stress response, implied there are cross talk between auxin, BR and abiotic stress signaling pathways.Keywords
This publication has 92 references indexed in Scilit:
- Auxin: A Trigger for Change in Plant DevelopmentCell, 2009
- Jalview Version 2—a multiple sequence alignment editor and analysis workbenchBioinformatics, 2009
- The Sorghum bicolor genome and the diversification of grassesNature, 2009
- A Rapid Bootstrap Algorithm for the RAxML Web ServersSystematic Biology, 2008
- MEGA: A biologist-centric software for evolutionary analysis of DNA and protein sequencesBriefings in Bioinformatics, 2008
- LATERAL ORGAN BOUNDARIES defines a new family of DNA-binding transcription factors and can interact with specific bHLH proteinsNucleic Acids Research, 2007
- A GH3-like gene, CcGH3, isolated from Capsicum chinense L. fruit is regulated by auxin and ethylene*Published by Springer Science and Business Media LLC ,2005
- ProtTest: selection of best-fit models of protein evolutionBioinformatics, 2005
- MUSCLE: multiple sequence alignment with high accuracy and high throughputNucleic Acids Research, 2004
- T-coffee: a novel method for fast and accurate multiple sequence alignmentJournal of Molecular Biology, 2000