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Related Experiment Video

Updated: Jun 16, 2025

Isolation of Histone from Sorghum Leaf Tissue for Top Down Mass Spectrometry Profiling of Potential Epigenetic Markers
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Comparative phenotypic and transcriptomic analysis reveals genotypic differences in nitrogen use efficiency in

Chunjuan Liu1, Wendong Gu1, Chang Liu1

  • 1College of Agronomy/Shenyang Agricultural University, Shenyang, Liaoning, 110866, PR China.

Plant Physiology and Biochemistry : PPB
|August 15, 2024
PubMed
Summary

This study reveals that the N-efficient sorghum line 398B exhibits superior nitrogen use efficiency (NUE) and yield under low nitrogen conditions. This is due to enhanced photosynthesis, N metabolism, and coordinated gene expression, offering insights for developing improved sorghum varieties.

Keywords:
GenomeNitrogen use efficiencyPhysiologySorghumbicolorTranscriptome

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Area of Science:

  • Agricultural Science
  • Plant Physiology
  • Genomics

Background:

  • Sorghum is a vital C4 grass and biofuel crop, known for low-input tolerance.
  • Enhancing nitrogen use efficiency (NUE) in sorghum under low nitrogen is crucial but underexplored.

Purpose of the Study:

  • To investigate factors influencing sorghum's nitrogen use efficiency (NUE) under nitrogen deficiency.
  • To compare an N-efficient (398B) and an N-inefficient (CS3541) sorghum inbred line using integrated approaches.

Main Methods:

  • Hydroponic experiments and field trials were conducted.
  • Phenotypic, physiological, and multi-omics (genomic, transcriptomic) analyses were integrated.
  • Co-expression network analysis identified key genes related to nitrogen uptake and utilization.

Main Results:

  • The N-efficient line 398B showed significantly higher NUE and yield than CS3541.
  • 398B demonstrated superior growth, photosynthesis, and nitrogen metabolism enzyme activity under N deficiency.
  • Fewer genomic diversities and altered gene expression in 398B correlated with its high NUE.

Conclusions:

  • Sorghum line 398B achieves higher nitrogen uptake efficiency (NUpE) and nitrogen utilization efficiency (NUtE).
  • This is facilitated by coordinated photosynthesis and nitrogen metabolism, with key genes like NPF5.10 and WRKY playing roles.
  • Identified candidate genes offer potential for breeding sorghum with enhanced NUE for sustainable agriculture and bioenergy.