The genetics of nitrogen use efficiency in crop plants
Date
2015
Authors
Han, M.
Okamoto, M.
Beatty, P.
Rothstein, S.
Good, A.
Editors
Bassler, B.L.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Annual Review of Genetics, 2015; 49(1):9.1-9.21
Statement of Responsibility
Mei Han, Mamoru Okamoto, Perrin H. Beatty, Steven J. Rothstein, and Allen G. Good
Conference Name
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 http://www.annualreviews.org/catalog/pubdates.aspx for revised estimates.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright © 2015 by Annual Reviews. All rights reserved