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ISSN : 1225-5009(Print)
ISSN : 2287-772X(Online)
Flower Research Journal Vol.32 No.S pp.22-22
DOI : https://doi.org/10.11623/frj.2024.32.S.22

Seasonal Changes in Gene Expression Profiles Associated with Senescence Characteristics and Vase Life of Cut Roses

Suong Tuyet Thi Ha, Ji Yeong Ham, Il-Geun Park, Yong-Tae Kim, Byung-Chun In*
Department of Smart Horticultural Science, Andong National University, Andong 36729, Korea

Abstract

In this study, changes in senescence patterns and vase life of cut roses grown in summer and autumn were investigated to identify the relationship between the harvest seasons and the longevity of the flowers. Gene expression profiles associated with lignin, pectin, ethylene, auxin, and sucrose transport were also analyzed to identify molecular mechanisms underlying the senescence symptoms, such as bent neck, petal abscission and petal wilting of cut rose flowers. The results revealed seasonal-dependent occurrences of bent neck and petal abscission, with higher incidence rates in autumn rose flowers. The increase of bent neck and petal abscission contribute to shortened the vase life of the cut flowers. Gene expression analysis indicated that elevated levels of ethylene biosynthesis genes and reduced expression of lignin, pectin biosynthesis, auxin response factor, and sucrose transport genes accelerated the increased senescence symptoms. Especially, the incidence rates of the bent neck were highly negatively correlated with the transcript levels of key genes involved in lignin and pectin biosynthesis, RhPRXPX and RhGAUT1, in pedicels. These results contribute to understanding the molecular factors influencing the mechanical strength of flower pedicels and provide insights for postharvest strategies to enhance the ornamental value of cut flowers across seasons.

초록

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  2. Journal Abbreviation : 'Flower Res. J.'
    Frequency : Quarterly
    Doi Prefix : 10.11623/frj.
    ISSN : 1225-5009 (Print) / 2287-772X (Online)
    Year of Launching : 1991
    Publisher : The Korean Society for Floricultural Science
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    Floricultural Science

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