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https://hdl.handle.net/2440/134930
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Type: | Journal article |
Title: | Strategies for engineering improved nitrogen use efficiency in crop plants via redistribution and recycling of organic nitrogen. |
Author: | Melino, V.J. Tester, M.A. Okamoto, M. |
Citation: | Current Opinion in Biotechnology, 2022; 73:263-269 |
Publisher: | Elsevier BV |
Issue Date: | 2022 |
ISSN: | 0958-1669 1879-0429 |
Statement of Responsibility: | Vanessa J Melino, Mark A Tester, and Mamoru Okamoto |
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. |
Keywords: | nitrogen fertilizers |
Rights: | © 2021 Published by Elsevier Ltd. |
DOI: | 10.1016/j.copbio.2021.09.003 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.copbio.2021.09.003 |
Appears in Collections: | Agriculture, Food and Wine publications |
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