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Genetic research

Fresh Data on Proteins - Nucleoproteins Informs New Research

Strategic Insights

— 1 min read

A recent report from Hong Kong reveals fresh insights into Proteins - Nucleoproteins. The study, led by researchers from the Chinese University of Hong Kong, has shed light on the molecular mechanisms underlying cis-regulatory elements (CREs) in maize. According to the researchers, CREs play a crucial role in modulating gene expression and phenotypic diversity in maize, with genome-wide association study (GWAS) hits and expression quantitative trait loci (eQTLs) often enriched in CREs. The study's findings have significant implications for understanding the genetic basis of complex traits in maize.

Key Takeaways:

  • Researchers from the Chinese University of Hong Kong have identified 82,174 consensus ACRs in maize inbred lines, with 39.55% exhibiting significant population-wide chromatin accessibility variation.
  • The study discovered 27,004 loci associated with chromatin accessibility quantitative trait loci (caQTLs), including 1,398 predicted to disrupt transcription factor (TF)-binding sites.
  • Integration with multi-omics data revealed 7,405 caACR-target gene pairs and linked 56 caACRs to GWAS signals for 51 agronomic traits, with significant enrichment in flowering-related pathways.
  • Functional candidates such as ZmZIM30, putatively regulated by caACRs, emerged as key regulators of flowering time.
  • The study identified allelic variants overlapping a caQTL at the fad7 locus associated with linolenic acid content, showing differential chromatin accessibility.
  • The research provides a high-resolution map of cis-elements in maize leaves and deciphers the genetic basis of chromatin accessibility variation.
  • The study bridges noncoding caQTLs to molecular mechanisms underlying GWAS hits.

Statistics:

  • 82,174: Number of consensus ACRs identified in maize inbred lines
  • 39.55%: Proportion of ACRs exhibiting significant population-wide chromatin accessibility variation
  • 27,004: Number of loci associated with chromatin accessibility quantitative trait loci (caQTLs)
  • 1,398: Number of predicted caQTLs disrupting transcription factor (TF)-binding sites
  • 7,405: Number of caACR-target gene pairs identified
  • 56: Number of caACRs linked to GWAS signals for 51 agronomic traits

Sources:

  • Genetic effects on chromatin accessibility reveal the molecular mechanisms of complex traits in maize. The Plant Journal, 2025;123(4).
  • Wiley, 111 River St, Hoboken 07030-5774, NJ, USA.
  • Heiyuen Ngan, State Key Laboratory of Agrobiotechnology, School of Life Sciences, Chinese University of Hong Kong, Hong Kong, People's Republic of China.
  • National Natural Science Foundation of China.
  • National Key Research and Development Program of China.

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