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Related Experiment Video

Updated: Dec 2, 2025

Author Spotlight: Soybean Hairy Root Transformation for the Analysis of Gene Function
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Author Spotlight: Soybean Hairy Root Transformation for the Analysis of Gene Function

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GmCCD4 controls carotenoid content in soybeans.

Jinshan Gao1, Suxin Yang1, Kuanqiang Tang1

  • 1Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.

Plant Biotechnology Journal
|November 1, 2020
PubMed
Summary

Scientists identified the Glycine max carotenoid cleavage dioxygenase 4 (GmCCD4) gene as a key regulator of carotenoid levels in soybeans. This discovery offers valuable insights for improving soybean breeding practices and enhancing carotenoid content.

Keywords:
GmCCD4 genecarotenoidsgenetic mappingsoybeanyellow flower

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Area of Science:

  • Plant biology
  • Molecular genetics
  • Crop science

Background:

  • Carotenoids are vital plant pigments with implications for human health and crop quality.
  • Understanding carotenoid metabolism is crucial for improving staple crops like soybean (Glycine max).

Purpose of the Study:

  • To elucidate the role of Glycine max carotenoid cleavage dioxygenase 4 (GmCCD4) in regulating carotenoid metabolism.
  • To characterize the GmCCD4 gene and its impact on carotenoid accumulation in soybean.

Main Methods:

  • Map-based cloning and functional characterization of the GmCCD4 gene.
  • Analysis of carotenoid content in GmCCD4 mutants and wild-type soybean.
  • Genome-wide association study (GWAS) to identify genetic loci associated with carotenoid levels.
  • Heterologous expression of GmCCD4 haplotypes in E. coli.

Main Results:

  • Loss-of-function mutations in GmCCD4 led to increased carotenoid accumulation, resulting in yellow flowers and higher seed carotenoid content.
  • GWAS identified the GmCCD4 locus as a major determinant of carotenoid content in natural soybean populations.
  • Specific GmCCD4 haplotypes were associated with higher carotenoid levels and increased beta-carotene accumulation.

Conclusions:

  • GmCCD4 acts as a negative regulator of carotenoid content in soybean.
  • The genetic diversity within GmCCD4, including its various haplotypes, presents a valuable resource for soybean breeding aimed at modulating carotenoid levels.