Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen

Vanessa J. Melino; Mark A. Tester; Mamoru Okamoto

doi:10.1016/j.copbio.2021.09.003

Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen

Vanessa J. Melino, Mark A. Tester, Mamoru Okamoto

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Global use of nitrogen (N) fertilizers has increased sevenfold from 1960 to 1995 but much of the N applied is lost to the environment. Modifying the temporal and spatial distribution of organic N within the plant can lead to improved grain yield and/or grain protein content for the same or reduced N fertilizer inputs. Biotechnological approaches to modify whole plant distribution of amino acids and ureides has proven successful in several crop species. Manipulating selective autophagy pathways in crops has also improved N remobilization efficiency to sink tissues whilst the contribution of ribophagy, RNA and purine catabolism to N recycling in crops is still too early to foretell. Improved recycling and remobilization of N must exploit N-stress responsive transcriptional regulators, N-sensing or phloem-localized promotors and genetic variation for N-responsive traits.

Original language	English (US)
Pages (from-to)	263-269
Number of pages	7
Journal	Current Opinion in Biotechnology
Volume	73
DOIs	https://doi.org/10.1016/j.copbio.2021.09.003
State	Published - Sep 22 2021

ASJC Scopus subject areas

Biomedical Engineering
Bioengineering
Biotechnology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.copbio.2021.09.003

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title = "Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen",

abstract = "Global use of nitrogen (N) fertilizers has increased sevenfold from 1960 to 1995 but much of the N applied is lost to the environment. Modifying the temporal and spatial distribution of organic N within the plant can lead to improved grain yield and/or grain protein content for the same or reduced N fertilizer inputs. Biotechnological approaches to modify whole plant distribution of amino acids and ureides has proven successful in several crop species. Manipulating selective autophagy pathways in crops has also improved N remobilization efficiency to sink tissues whilst the contribution of ribophagy, RNA and purine catabolism to N recycling in crops is still too early to foretell. Improved recycling and remobilization of N must exploit N-stress responsive transcriptional regulators, N-sensing or phloem-localized promotors and genetic variation for N-responsive traits.",

author = "Melino, {Vanessa J.} and Tester, {Mark A.} and Mamoru Okamoto",

note = "KAUST Repository Item: Exported on 2021-09-29 Acknowledgements: We thank King Abdullah University of Science and Technology (KAUST) for funding this work. We also thank the ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate at the Waite Research Institute of the University of Adelaide.",

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AU - Melino, Vanessa J.

AU - Tester, Mark A.

AU - Okamoto, Mamoru

N1 - KAUST Repository Item: Exported on 2021-09-29 Acknowledgements: We thank King Abdullah University of Science and Technology (KAUST) for funding this work. We also thank the ARC Industrial Transformation Research Hub for Wheat in a Hot and Dry Climate at the Waite Research Institute of the University of Adelaide.

PY - 2021/9/22

Y1 - 2021/9/22

N2 - Global use of nitrogen (N) fertilizers has increased sevenfold from 1960 to 1995 but much of the N applied is lost to the environment. Modifying the temporal and spatial distribution of organic N within the plant can lead to improved grain yield and/or grain protein content for the same or reduced N fertilizer inputs. Biotechnological approaches to modify whole plant distribution of amino acids and ureides has proven successful in several crop species. Manipulating selective autophagy pathways in crops has also improved N remobilization efficiency to sink tissues whilst the contribution of ribophagy, RNA and purine catabolism to N recycling in crops is still too early to foretell. Improved recycling and remobilization of N must exploit N-stress responsive transcriptional regulators, N-sensing or phloem-localized promotors and genetic variation for N-responsive traits.

AB - Global use of nitrogen (N) fertilizers has increased sevenfold from 1960 to 1995 but much of the N applied is lost to the environment. Modifying the temporal and spatial distribution of organic N within the plant can lead to improved grain yield and/or grain protein content for the same or reduced N fertilizer inputs. Biotechnological approaches to modify whole plant distribution of amino acids and ureides has proven successful in several crop species. Manipulating selective autophagy pathways in crops has also improved N remobilization efficiency to sink tissues whilst the contribution of ribophagy, RNA and purine catabolism to N recycling in crops is still too early to foretell. Improved recycling and remobilization of N must exploit N-stress responsive transcriptional regulators, N-sensing or phloem-localized promotors and genetic variation for N-responsive traits.

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DO - 10.1016/j.copbio.2021.09.003

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SN - 0958-1669

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EP - 269

JO - Current Opinion in Biotechnology

JF - Current Opinion in Biotechnology

ER -

Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen

Abstract

ASJC Scopus subject areas

UN SDGs

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