Relationship among flfl oral scent intensity, ethylene sensitivity, and longevity of carnation flowers

• Published in: Horticulture, environment and biotechnology 2021, Environment, and Biotechnology, 62(6), , pp.907-916
• Main Authors: 인병천, Suong Tuyet Thi Ha, 김용태, 임진희
• Format: Article
• Language: English
• Subjects: 농학
• ISSN: 2211-3452; 2211-3460
• DOI: 10.1007/s13580-021-00368-5

Floral fragrance is a vital factor for the marketability of ornamental fl owers, and it may also infl uence fl ower longevity. Despite several studies on the relationship between fl oral fragrance and fl ower longevity, a scientifi c consensus about thisrelationship has not been established to date. To investigate the infl uence of fl oral scent level on ethylene sensitivity andfl ower longevity, we determined the relationship between the mRNA levels of ethylene biosynthesis genes and senescencecharacteristics of low- and high-scent carnation cultivars after ethylene treatment. In this study, we demonstrated that highfl oral scent is related to increased sensitivity to ethylene as a consequence of transcriptional accumulation of the ethylenebiosynthesis genes DcACS1 and DcACO1 in carnations. Flower senescence symptoms responsible for vase life terminationfollowing ethylene exposure diff ered depending on the fl oral scent level; while low-scent fl owers terminated their vase lifedue to brown edges and wilting, high-scent fl owers terminated their vase life earlier due to petal inrolling, which resultedfrom their rapid tissue response to ethylene. The results revealed that the longevity of carnation fl owers is strongly negativelycorrelated with fl oral scent level and ethylene sensitivity and that the initial transcript level of DcACO1 contributed the mostto the vase life of high-scent fl owers. This result suggested that fl oral scent intensity is closely related to ethylene sensitivityin carnation fl owers. High fl oral scent is correlated with a rapid tissue response to exogenous ethylene and consequentlyshortens the vase life of carnation fl owers. KCI Citation Count: 0