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Antifreeze proteins promote the germination of low temperature-treated petunia seeds via regulation of antioxidant- and proline-related genes

  • Pe, Phyo Phyo Win (Department of Horticulture and Life science, Yeungnam University) ;
  • Kyua, Swum Yi (Department of Horticultural Science, Kyungpook National University) ;
  • Naing, Aung Htay (Department of Horticultural Science, Kyungpook National University) ;
  • Park, Kyeung Il (Department of Horticulture and Life science, Yeungnam University) ;
  • Chung, Mi-Young (Department of Agricultural Education, Sunchon National University) ;
  • Kim, Chang Kil (Department of Horticultural Science, Kyungpook National University)
  • Received : 2020.09.14
  • Accepted : 2020.09.18
  • Published : 2020.09.30

Abstract

The involvement of antifreeze proteins (AFPs; type I and III) in the germination of low temperature-treated petunia seeds (cv. 'Mirage Rose') was investigated. The addition of AFPs (300 or 500 ㎍/l) in low-temperature treatment significantly promoted the germination of seeds compared with that in which AFPs were not added. Among all treatments, treatment with AFP I added at 300 ㎍/l showed the highest germination percentage and improved plant growth. The expression levels of antioxidant-related genes such as superoxide dismutase, peroxidase, and proline synthesis were associated with the germination of low temperature-treated seeds. Overall, this study demonstrated that AFP I may potentially function as a cold-protective agent for the germination of low temperature-treated seeds.

Keywords

References

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