Advances in Barley Breeding for Improving Nitrogen Use Efficiency

Chen, Zhiwei; Li, Luli; Halford, Nigel G.; Xu, Hongwei; Huang, Linli; Gao, Runhong; Lu, Ruiju; Liu, Chenghong

doi:10.3390/agronomy12071682

Cited by 4 publications

(2 citation statements)

References 73 publications

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“…NPF2.12 indirectly regulates root growth and NUE by activating NO signalling under LN conditions (Siddiqui et al, 2023). Transcription factor HvNLP2 mediates nitrate signalling and affects NUE in barley (Chen et al, 2022). Q‐GNN0‐2008‐MQM for grain N content was identified on barley chromosome 2H (Saal et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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QTL mapping of nitrogen use efficiency traits at the seedling and maturity stages under different nitrogen conditions in barley (Hordeum vulgare L.)

Zeng,

Song,

et al. 2023

Plant Breeding

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Nitrogen (N) is an essential element for plant growth and development. The identification and utilization of N use efficiency (NUE) loci are essential for breeding high NUE cultivars. In this study, 15 NUE traits were measured in a recombinant inbred line population containing 121 lines derived from the cross between a cultivated barley (Baudin) and a wild barley (CN4027). The hydroponic culture was conducted with normal N and low N treatments in one‐time frame, and field trials were conducted with N sufficiency and N deficiency treatments in two growing seasons. Twenty‐two quantitative trait loci (QTLs) and four clusters were detected. Of them, the five stable QTLs Qgna.sau‐3H for grain N concentration, Qtna.sau‐3H for total N accumulation per plant, Qnhi.sau‐3H for N harvest index, Qnutegy.sau‐3H for N utilization efficiency for grain yield and Qanutedm.sau‐3H.1 for N utilization efficiency for aboveground dry matter were co‐located on chromosome 3H flanked by the markers bpb6282426 and bpb4786261. These two novel QTL clusters simultaneously controlled NUE traits at the seedling and maturity stages. Some genes related to NUE traits in intervals of the major QTLs were predicted. The significant relationships between NUE traits and agronomic and physiological traits were detected and discussed. In conclusion, this study uncovers the most promising genomic regions for the marker‐assisted selection of NUE traits to improve NUE in barley.

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Section: Introductionmentioning

confidence: 99%

“…Kindu et al (2014) detected a few QTLs for NUE traits on barley chromosome arm 3HL. HvNRT2.1 might also be beneficial for improving the NUE in barley (Chen et al, 2022; Gao et al, 2022). Although there have been extensive advancements in the genetic knowledge of NUE traits at maturity, it remains largely unknown at the seedling stage.…”

Section: Introductionmentioning

confidence: 99%

QTL mapping of nitrogen use efficiency traits at the seedling and maturity stages under different nitrogen conditions in barley (Hordeum vulgare L.)

Zeng,

Song,

et al. 2023

Plant Breeding

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Implementing Genome Editing in Barley Breeding

Jakobson,

Oney Birol,

Timofejeva

2023

A Roadmap for Plant Genome Editing

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This chapter summarizes the status of the genome editing efforts in Hordeum vulgare L. and provides an overview of the technical advances and obstacles of applying genome editing in barley. It also highlights the potential of genome editing in barley breeding with the focus on breeding for high yielding, disease resistant and stable varieties. The CRISPR/Cas technology is a breakthrough in genome editing due to its robustness and easy to use programming, especially for generating targeted mutations to switch off genes that have a negative impact on food quality, increase susceptibility to pathogens, or divert metabolic flux away from useful end products. Genome editing studies are expected to advance barley breeding by accelerating the breeding process and enabling easier multiplexing of traits. The chapter offers an outlook on the future of barley genome editing techniques based on CRISPR/Cas system.

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Seed Protein Genetics Linked with Nitrogen and Phosphorus Translocation Efficiency in Soybean

Zhao

et al. 2023

Agronomy

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Soybean (Glycine max (L.) Merr.) is an important nutritional crop with high seed protein content. Production of high protein concentrations relies on sufficient nutrient supplies, especially of nitrogen (N) and phosphorus (P). Although the genetic basis for seed quality traits has been well studied, little information exists on any genetic connections between seed quality and nutrient supplies in soybean. Here, a recombinant inbred line (RIL) population of 179 progeny was generated using HC6 and JD17 as parents contrasting in seed quality and N and P translocation efficiencies. Seed protein and N and P translocation efficiencies were higher in HC6 than in JD17. Meanwhile, positive correlations were observed between seed protein content and translocation efficiency of N and P in RILs, implying that high N and P translocation efficiencies might facilitate seed protein accumulation. A genetic map was constructed using 5250 SNP markers covering a genetic distance of 3154.83 cM. A total of 6 loci for quality and 13 loci for N and P translocation efficiency were detected. Among them, two fragments on chromosome 6 and chromosome 20 contained multiple significant markers for both quality and N and P translocation efficiencies, with the respective observed LOD values ranging from 2.98 to 5.61, and 3.01 to 11.91, while the respective PVE values ranged from 8.2% to 13.9%, and 8.3% to 28.0%. Interestingly, one significant locus on chromosome 20 appears to be the product of a transposable element (TE) InDel in Glyma.20G085100, with progeny lacking the TE also exhibiting higher N and P translocation efficiencies, along with higher seed protein contents. Taken together, these results provide genetic evidence that increasing N and P translocation efficiencies may lead to increasing protein contents in soybean seeds. Furthermore, a TE InDel may be used as a genetic marker for breeding elite soybean cultivars with high protein content and N and P translocation efficiencies.

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Advances in Barley Breeding for Improving Nitrogen Use Efficiency

Cited by 4 publications

References 73 publications

QTL mapping of nitrogen use efficiency traits at the seedling and maturity stages under different nitrogen conditions in barley (Hordeum vulgare L.)

QTL mapping of nitrogen use efficiency traits at the seedling and maturity stages under different nitrogen conditions in barley (Hordeum vulgare L.)

Implementing Genome Editing in Barley Breeding

Seed Protein Genetics Linked with Nitrogen and Phosphorus Translocation Efficiency in Soybean

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