Cited by 118Plant nutrient uptake and metabolismWheat and Barley Genetics and PathologyPlant Molecular Biology Research

Increasing yield potential through manipulating of an ARE1 ortholog related to nitrogen use efficiency in wheat by CRISPR/Cas9

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Zhang, Jiahui, Zhang, Huating, Li, Shaoya, Li, Jingying, Yan, Lei, Xia, Lanqin·2021·Journal of Integrative Plant Biology

Abstract

Wheat (Triticum aestivum L.) is a staple food crop consumed by more than 30% of world population. Nitrogen (N) fertilizer has been applied broadly in agriculture practice to improve wheat yield to meet the growing demands for food production. However, undue N fertilizer application and the low N use efficiency (NUE) of modern wheat varieties are aggravating environmental pollution and ecological deterioration. Under nitrogen‐limiting conditions, the rice (Oryza sativa) abnormal cytokinin response1 repressor1 (are1) mutant exhibits increased NUE, delayed senescence and consequently, increased grain yield. However, the function of ARE1 ortholog in wheat remains unknown. Here, we isolated and characterized three TaARE1 homoeologs from the elite Chinese winter wheat cultivar ZhengMai 7698. We then used CRISPR/Cas9‐mediated targeted mutagenesis to generate a series of transgene‐free mutant lines either with partial or triple‐null taare1 alleles. All transgene‐free mutant lines showed enhanced tolerance to N starvation, and showed delayed senescence and increased grain yield in field conditions. In particular, the AABBdd and aabbDD mutant lines exhibited delayed senescence and significantly increased grain yield without growth defects compared to the wild‐type control. Together, our results underscore the potential to manipulate ARE1 orthologs through gene editing for breeding of high‐yield wheat as well as other cereal crops with improved NUE.

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Authors
Zhang, J., Zhang, H., Li, S., Li, J., Yan, L., & Xia, L.
Affiliations
  • Chinese Academy of Agricultural Sciences (CN)
  • Zhengzhou University (CN)
Corresponding author
Xia, Lanqin
Venue
Journal of Integrative Plant Biology
Publisher
Wiley
Published
2021-09
Volume
63
Issue
9
Pages
1649-1663
ISSN
  • 0577-7496 (ISSN-L)
  • 1672-9072
  • 1744-7909
OpenAlex
W3180094361
Cited by
115
References
49
Citations by year
2026: 23 · 2025: 20 · 2024: 24 · 2023: 27 · 2022: 16 · 2021: 5
FWCI
11.27
Type
journal article
Language
en
Open access
Locations
  • Journal of Integrative Plant Biology (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • ORBi (University of Liège) (submittedVersion, other-oa)
Funders
  • Chinese Academy of Agricultural Sciences (CAAS-ZDRW202109)
  • Institute of Crop Sciences, Chinese Academy of Agricultural Sciences
  • National Key Research and Development Program of China (2020YFE0202300)
  • Agricultural Science and Technology Innovation Program (CAAS‐ZDRW202109, 2020YFE0202300)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Wheat and Barley Genetics and Pathology
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
Keywords
nitrogen use efficiency, wheat, homoeologs, cytokinin response, delayed senescence, grain yield, CRISPR/Cas9 genome editing, nitrogen fertilization
MeSH terms
Gene Editing, Edible Grain, Nitrogen, Triticum, CRISPR-Cas Systems

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