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The role of ammonium transport proteins in improving nitrogen use efficiency in crop production

Code: 9781835450888
Muhammad K. Uddin, Francine Perrine-Walker and Brent N. Kaiser, University of Sydney, Australia

Chapter synopsis:

Nitrogen (N) is a key macronutrient required for plant growth and reproduction. Ammonium (NH4+) is a readily available nitrogen source for plant growth and an important contributor to net plant nitrogen uptake and utilisation. It is suggested that members of the high-affinity ammonium transporter family (AMT) and the low-affinity ammonium major facilitator (AMF, non-AMT type) NH4+ transporters operate respectively as high-affinity (HATS) and low-affinity (LATS) transport pathways, both contributing to the management of overall plant NH4+ transport, uptake and cellular redistribution. In this chapter, we will examine NH4+ transport systems operating across different plant cell types and tissues in both a N2-fixing legume root nodule and in the model plant, Arabidopsis thaliana.



DOI: 10.19103/AS.2024.0135.05
£25.00
Table of contents
  • 1 Introduction
  • 2 The beginning: setting up the nodule nitrogen-fixing system
  • 3 Transport activities of the symbiosome membrane
  • 4 Nitrogen fixation and nitrogen delivery in nodules
  • 5 The requirement for ammonium transporters
  • 6 Ammonium transport in legumes
  • 7 Understanding ammonium transporter functionality from a model plant: Arabidopsis thaliana
  • 8 Altered ammonium transporter transporter activity in plants
  • 9 Ammonium major facilitator
  • 10 The physiological role of ammonium major facilitator in root nodules
  • 11 Conclusion and future direction
  • 12 References

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