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Updated: Sep 11, 2025

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The miR172a-ERF416/413 module regulates soybean seed traits.

Meng Jin1,2, Jia-Qi Han1,2, Lu-Yao Zhang1,2

  • 1State Key Lab of Seed Innovation, Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing, 100101, China.

Journal of Integrative Plant Biology
|August 14, 2025
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new gene module (miR172a-ERF416/413) regulating soybean seed size and weight. This finding offers potential for breeding improved soybean varieties with higher yield and oil content.

Keywords:
ERF416/ERF413 transcription factorsfatty acidsmiR172aseed size/weightsoybean

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Area of Science:

  • Plant Molecular Biology
  • Crop Genetics
  • Biotechnology

Background:

  • Soybean (Glycine max) is a crucial source of vegetable oils and proteins.
  • Understanding the genetic regulation of soybean seed traits is essential for crop improvement.
  • Current knowledge on soybean seed trait regulation, particularly involving microRNAs and transcription factors, remains limited.

Purpose of the Study:

  • To identify and characterize a novel regulatory module controlling soybean seed size and weight.
  • To elucidate the molecular mechanisms by which miR172a, ERF416, and ERF413 influence seed development.
  • To explore the potential of this module for breeding high-yield and high-oil soybean cultivars.

Main Methods:

  • Identification of a microRNA (miR172a) and its target genes (ERF416 and ERF413) involved in seed trait regulation.
  • Generation and analysis of transgenic soybean plants overexpressing MIR172a or ERF416.
  • Creation and characterization of erf416/413 mutant soybean lines.
  • Promoter analysis of downstream target genes (GmKIX8-1 and GmSWEET10a).
  • Haplotype analysis of the ERF416 promoter region.

Main Results:

  • The miR172a-ERF416/413 module was identified as a key regulator of soybean seed size and weight.
  • Overexpression of MIR172a or mutation of ERF416/413 resulted in smaller seeds.
  • Overexpression of ERF416 led to increased seed size.
  • ERF416 and ERF413 directly regulate GmKIX8-1 and GmSWEET10a gene expression.
  • Mutants lacking ERF416/413 exhibited higher seed yield and fatty acid content, while MIR172a overexpression reduced fatty acid content.
  • Specific ERF416 promoter haplotypes correlated with higher gene expression, seed weight, or lipid content.

Conclusions:

  • A novel miR172a-ERF416/413 regulatory module controls soybean seed size, weight, and potentially fatty acid accumulation.
  • This module provides new targets for genetic manipulation to enhance soybean breeding.
  • Targeting specific ERF416 promoter haplotypes could facilitate the development of high-oil and high-yield soybean cultivars.