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Phytohormone profiles of ‘Seolhyang’ and ‘Maehyang’ strawberry fruits during ripening

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Abstract

The ripening pattern of strawberry (Fragaria × ananassa) is different from other fruits, primarily because plant hormones affect the fruit’s quality in a different way than in other fruits. However, most studies on strawberries have focused on cultivation methods, control of pests and diseases, and breeding, and considerably less research has been done on hormones that determine strawberry internal quality. Even though strawberries have good indicators for gauging external quality, there is not enough data to for it to be related to internal quality. As such, we sought to better understand quality as strawberry fruit in specific six progressive developmental stages: flower buds, flowering, green fruits (GF), white fruits, pink fruits, and red fruits (RF). The internal quality and hormonal changes of ‘Seolhyang’ and ‘Maehyang’ cultivars were investigated on the basis of these developmental stages. This report highlights the changes in plant hormones that affect fruit ripening of ‘Seolhyang’ and ‘Maehyang’ cultivars. ABA, cytokinin, JA, and SA content increased gradually with maturity from the GF to the RF stage, while auxin content decreased gradually from GF to RF. Meanwhile, cytokinin and GA3 content exhibited fluctuations and differences between ‘Seolhyang’ and ‘Maehyang’ cultivars. The quality of strawberries was highest at the sixth (RF) stage in the both cultivars. Our results reveal that plant hormones play a role in the maturation of strawberry fruits and provide a foundation for their agricultural use in controlling the maturity of fruits.

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Acknowledgements

This study was financially supported by the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry, and Fisheries (IPET) through the Agri-Bio Industry Technology Development Program funded by the Ministry of Agriculture, Food, and Rural Affairs (MAFRA) (315004-05-1-HD030). This work was supported by Pusan National University Research Grant, 201803330001. Thank you for funding for the research.

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GBL contributed to the Conception, Design, Analysis, Investigation, Methodology, and Drafting. JEL contributed to the Design, Analysis, Investigation, Methodology, and Drafting. JHL contributed to the Conception and Drafting. YJL contributed to the Conception, Design, and Methodology. YHP contributed to the Conception, Design, and Methodology. YWC contributed to the Conception, Design, and Methodology. BGS contributed to the Conception, Design, and Methodology. NJK contributed to the Design, Analysis, Investigation, and Methodology. BIJ contributed to the Conception, Design, Data curation, Analysis, Supervision, Funding acquisition, Investigation, Interpretation, Drafting, Revising, Agreement to be accountable for all aspects of the work, and Final approval. JSK contributed to the Conception, Design, Data curation, Analysis, Supervision, Funding acquisition, Investigation, Methodology, Interpretation, Drafting, Revising, Agreement to be accountable for all aspects of the work, and Final approval.

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Correspondence to Jum-soon Kang.

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Communicated by Myung-Min Oh.

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Gyu-Bin Lee and Byoung Il Je share the first authorship.

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Lee, GB., Lee, JE., Lee, JH. et al. Phytohormone profiles of ‘Seolhyang’ and ‘Maehyang’ strawberry fruits during ripening. Hortic. Environ. Biotechnol. 61, 229–239 (2020). https://doi.org/10.1007/s13580-019-00213-w

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  • DOI: https://doi.org/10.1007/s13580-019-00213-w

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