Advances in barley breeding for improving nitrogen use efficiency

A - Papers appearing in refereed journals

Chen, Z., Li, L., Halford, N. G., Xu, H., Huang, L., Gao, R., Lu, R. and Liu, C 2022. Advances in barley breeding for improving nitrogen use efficiency. Agronomy. 12 (7), p. 1682.

AuthorsChen, Z., Li, L., Halford, N. G., Xu, H., Huang, L., Gao, R., Lu, R. and Liu, C

Crop breeding for high nitrogen use efficiency (NUE) or tolerance to low nitrogen fertilization is thought to be an ideal solution to reduce the cost, carbon footprint, and other environmental problems caused by the excess use of nitrogen fertilizers. As a model plant for cereal crops, barley has many advantages, including good adaptability, a short growth period, and high natural stress resistance or tolerance. Therefore, research on improving NUE in barley is not only beneficial for nitrogen-efficient barley breeding but will also inform NUE improvement in other cereal crops. In this review, recent progress in understanding barley’s response to nitrogen nutrition, evaluation of NUE or low-nitrogen tolerance, quantitative trait loci (QTL) mapping and gene cloning associated with improving NUE, and breeding of nitrogen-efficient barley is summarized. Furthermore, several
biotechnological tools that could be used for revealing the molecular mechanisms of NUE or breeding for improving NUE in barley are introduced, including GWAS, omics, and gene editing. The latest research ideas in unraveling the molecular mechanisms of improving NUE in other crops are also
discussed. Thus, this review provides a better understanding of improving the NUE of barley and some directions for future research in this area.

KeywordsHordeum vulgare L.; NUE indexes; QTL mapping; GWAS; Gene cloning
Year of Publication2022
Journal citation12 (7), p. 1682
Digital Object Identifier (DOI)
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeDesigning Future Wheat (DFW) [ISPG]
Publisher's version
Output statusPublished
Publication dates
Online15 Jul 2022
Publication process dates
Accepted14 Jul 2022

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