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Genetic research

Drought Stress Impacts Quinoa Genotypes, Reveals Genomic and Epigenetic Variability

Strategic Insights

— 1 min read

Research by Necmettin Erbakan University has shed light on the impact of drought stress on crop productivity, particularly on genomic and epigenetic variation in quinoa. The study aimed to assess DNA damage and cytosine methylation alterations in six quinoa genotypes exposed to varying irrigation levels. The results showed genotype-specific polymorphism and genomic template stability (GTS) responses to irrigation stress, with Moqu Arrochilla displaying the highest GTS under 5% field capacity. The study also revealed both hyper- and hypomethylation events depending on stress intensity, with China and Moqu Arrochilla genotypes displaying the highest polymorphism rates for MspI and HpaII, respectively.

Key Takeaways:

  • The study assessed DNA damage and cytosine methylation alterations in six quinoa genotypes (Titicaca, Rainbow, Moqu Arrochilla, Cherry Vanilla, China, and White) exposed to five irrigation levels (5%, 10%, 25%, 50%, and 100% field capacity).
  • The results revealed genotype-specific polymorphism and genomic template stability (GTS) responses to irrigation stress, with Moqu Arrochilla showing the highest GTS (84.6%) under 5% field capacity.
  • CRED-iPBS analysis indicated both hyper- and hypomethylation events depending on stress intensity, with China and Moqu Arrochilla genotypes displaying the highest polymorphism rates for MspI (42.9%) and HpaII (39.0%), respectively.
  • The findings highlight the drought-induced genomic and epigenetic variability in quinoa, emphasizing the utility of iPBS and CRED-iPBS techniques for screening stress-responsive genotypes.
  • The study contributes to the understanding of stress adaptation and may inform breeding programs targeting drought tolerance.
  • The research was conducted by Aras Turkoglu, Kamil Haliloglu, Fatih Demirel, Serap Demirel, Muhammet Islam Isik, Adnan Aydin, Mustafa Tan, and Hadi Alipour.

Statistics:

  • 6 quinoa genotypes were used in the study (Titicaca, Rainbow, Moqu Arrochilla, Cherry Vanilla, China, and White).
  • 5 irrigation levels were tested (5%, 10%, 25%, 50%, and 100% field capacity).
  • Genomic template stability (GTS) responses varied among genotypes, with Moqu Arrochilla showing the highest GTS (84.6%) under 5% field capacity.
  • MspI and HpaII polymorphism rates were highest in China (42.9%) and Moqu Arrochilla (39.0%), respectively.

Sources:

  • Drought-Induced genomic and epigenetic variations in Quinoa genotypes revealed by iPBS and CRED-iPBS marker systems. Scientific Reports, 2025;15(1):28060.
  • Nature Portfolio. Heidelberger Platz 3, Berlin, 14197, Germany.
  • Necmettin Erbakan University, Konya, Turkey.

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