Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen
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Melino et al. 2021 Current Opinions.pdf
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Accepted manuscript
Type
ArticleKAUST Department
Biological and Environmental Science and Engineering (BESE) DivisionCenter for Desert Agriculture
Plant Science
The Salt Lab
Date
2021-09-22Online Publication Date
2021-09-22Print Publication Date
2022-02Embargo End Date
2022-09-22Permanent link to this record
http://hdl.handle.net/10754/672009
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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.Citation
Melino, V. J., Tester, M. A., & Okamoto, M. (2022). Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen. Current Opinion in Biotechnology, 73, 263–269. doi:10.1016/j.copbio.2021.09.003Sponsors
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.Publisher
Elsevier BVJournal
Current Opinion in BiotechnologyPubMed ID
34560475Additional Links
https://linkinghub.elsevier.com/retrieve/pii/S0958166921001683ae974a485f413a2113503eed53cd6c53
10.1016/j.copbio.2021.09.003
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