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Type: Journal article
Title: The genetics of nitrogen use efficiency in crop plants
Author: Han, M.
Okamoto, M.
Beatty, P.
Rothstein, S.
Good, A.
Citation: Annual Review of Genetics, 2015; 49(1):9.1-9.21
Publisher: Annual Reviews
Issue Date: 2015
ISSN: 0066-4197
Editor: Bassler, B.L.
Statement of
Mei Han, Mamoru Okamoto, Perrin H. Beatty, Steven J. Rothstein, and Allen G. Good
Abstract: In the past 50 years, the application of synthetic nitrogen (N) fertilizer to farmland resulted in a dramatic increase in crop yields but with considerable negative impacts on the environment. New solutions are therefore needed to simultaneously increase yields while maintaining, or preferably decreasing, applied N to maximize the nitrogen use efficiency (NUE) of crops. In this review, we outline the definition of NUE, the selection and development of NUE crops, and the factors that interact with NUE. In particular, we emphasize the challenges of developing crop plants with enhanced NUE, using more classical genetic approaches based on utilizing existing allelic variation for NUE traits. The challenges of phenotyping, mapping quantitative trait loci (QTLs), and selecting candidate genes for NUE improvement are described. In addition, we highlight the importance of different factors that lead to changes in the NUE components of nitrogen uptake efficiency (NUpE) and nitrogen utilization efficiency (NUtE). Expected final online publication date for the Annual Review of Genetics Volume 49 is November 23, 2015. Please see for revised estimates.
Keywords: N fertilizer; cereals; N uptake; N assimilation; N remobilization; quantitative trait loci
Rights: Copyright © 2015 by Annual Reviews. All rights reserved
DOI: 10.1146/annurev-genet-112414-055037
Appears in Collections:Agriculture, Food and Wine publications
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