6. Aluminum Tolerance in Sorghum and Maize

  1. Rajeev K. Varshney and
  2. Roberto Tuberosa
  1. Jurandir V. Magalhaes,
  2. Lyza G. Maron,
  3. Miguel A. Piñeros,
  4. Claudia T. Guimarães and
  5. Leon V. Kochian

Published Online: 11 OCT 2013

DOI: 10.1002/9781118728482.ch6

Translational Genomics for Crop Breeding: Abiotic Stress, Yield and Quality, Volume 2

Translational Genomics for Crop Breeding: Abiotic Stress, Yield and Quality, Volume 2

How to Cite

Magalhaes, J. V., Maron, L. G., Piñeros, M. A., Guimarães, C. T. and Kochian, L. V. (2013) Aluminum Tolerance in Sorghum and Maize, in Translational Genomics for Crop Breeding: Abiotic Stress, Yield and Quality, Volume 2 (eds R. K. Varshney and R. Tuberosa), John Wiley & Sons Ltd, Chichester, UK. doi: 10.1002/9781118728482.ch6

Publication History

  1. Published Online: 11 OCT 2013
  2. Published Print: 15 NOV 2013

ISBN Information

Print ISBN: 9780470962916

Online ISBN: 9781118728482

SEARCH

Keywords:

  • aluminum tolerance;
  • gene expression;
  • maize;
  • molecular breeding;
  • sorghum

Summary

Aluminum (Al) toxicity is the primary factor limiting crop production on acidic soils. Multidrug and toxic compound extrusion (MATE) were first identified as Al-tolerance genes from the fine mapping of Al-tolerance loci in sorghum and barley. In this chapter, the author describes the characterization of the major sorghum and maize Al-tolerance genes, SbMATE and ZmMATE1, and how we are using the information from this research to develop molecular breeding pipelines for improved sorghum and maize adaptation to acid soils. Quantitative real-time PCR (qPCR) showed that ZmMATE1 expression is concentrated in the root tips and is strongly up-regulated by Al, with much higher Al-induced expression in the Al-tolerant genotypes. SbMATE is a major sorghum Al-tolerance gene encoding a plasma membrane transporter from a different family of proteins, namely the multidrug and toxin extrusion (MATE) family of transporters.