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Advances in understanding plant root uptake of phosphorus (P) uptake

Code: 9781801460002
Jiayin Pang, The University of Western Australia, Australia; Zhihui Wen, The University of Western Australia, Australia and China Agricultural University, China; Daniel Kidd and Megan H. Ryan, The University of Western Australia, Australia; Rui-Peng Yu, Long Li and Wen-Feng Cong, China Agricultural University, China; Kadambot H. M. Siddique, The University of Western Australia, Australia; and Hans Lambers, The University of Western Australia, Australia and China Agricultural University, China

Chapter synopsis: At a global scale, phosphorus (P) deficiency comprises a large area of cropland, while P has also been used in excess of crop requirements in many other regions. Improved crop P-acquisition efficiency would allow lower target critical soil P values and provide savings in P-fertiliser use. At the same time, it would reduce P lost through erosion, leaching and/or soil sorption. This chapter summarises the progress in research on root traits associated with P acquisition, including root morphology, architecture, biochemistry, colonisation by arbuscular mycorrhizal fungi, and fine root endophytes, and the trade-offs among all these traits. Farming-management practices to improve P acquisition under current intensive agricultural systems are also discussed. The chapter summarises breeding progress in improving P-acquisition efficiency. In the face of soil P deficiency or legacy P globally, the chapter suggests future directions to improve P acquisition in five key areas.

DOI: 10.19103/AS.2020.0075.16
Table of contents 1 Introduction 2 Root architecture and morphology associated with phosphorus (P) uptake 3 Root biochemistry associated with P uptake 4 Arbuscular mycorrhizal fungi (AMF) and fine root endophytes 5 Trade-offs in traits 6 Microbially-mediated efficient P acquisition in species-diverse systems 7 Farming-management practice in P acquisition at the intensive agricultural system level 8 Breeding to improve P acquisition 9 Case study: mobilisation of phosphorus and manganese in cluster roots of Lupinus albus 10 Conclusion 11 Future trends in research 12 Where to look for further information 13 Acknowledgement 14 References

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