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Onoue, T.; Mikami, Mariko; Yoshioka, T.; Hashiba, Teruyoshi; Satoh, Shigeru

doi:10.1023/a:1006324715438

Cited by 26 publications

(2 citation statements)

References 18 publications

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“…ABA accumulated during natural senescence of carnation flower before the onset of ethylene production, and application of exogenous ABA promoted ethylene production and flower senescence (Onoue et al 2000). In this study, although ABA slightly reduced flower longevity, it did not have a significant effect irrespective of treatment timing (Table 1).…”

Section: Resultsmentioning

confidence: 47%

Effects of various chemical agents and early ethylene production on floral senescence of Hibiscus syriacus L.

et al. 2008

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To understand the factors that induce floral senescence in Hibiscus syriacus L., we have investigated the effects of various chemical agents on flower senescence at two different flowering stages, before and after full bloom, as well as the relationship between flower longevity and endogenous ethylene production before full bloom. Treatments with ethylene, 1-aminocyclopropane-1-carboxylic acid (ACC), and ethephon enhanced floral senescence, while aminoethoxyvinylglycine (AVG) promoted flower longevity regardless of treatment timing. Although ethanol slightly extended flower longevity, abscisic acid (ABA), nitric oxide, boric acid and sucrose, which have been reported to affect flower longevity or senescence, had no effect on H. syriacus floral senescence. The polyamine spermine (SPM), methylglyoxal-bis(guanylhydrazone) (MGBG), an inhibitor of SPM biosynthesis, and cycloheximide (CHI) accelerated flower senescence when applied before full bloom, but had no effect when applied after full bloom. SPM, MGBG and CHI treatments resulted in enhanced ethylene production during flower opening, and the promotion of flower senescence is mediated by ethylene production prior to full bloom. Furthermore, endogenous ethylene, spontaneously produced before blooming, was closely associated with floral senescence. These results suggest that ethylene production during flower opening plays a key role in determining the timing of Hibiscus flower senescence.

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Section: Resultsmentioning

confidence: 47%

Effects of various chemical agents and early ethylene production on floral senescence of Hibiscus syriacus L.

et al. 2008

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“…Numerous studies have provided evidence that there is an intricate and complex network among phytohormones ( Zhang and Zhou, 2013 ), and it has been well known that ethylene is an important endogenous hormone regulating flower senescence. A burst of ethylene production can cause flower senescence in many plants, such as petunia and carnation ( Saks and Staden, 1993 ; Onoue et al, 2000 ; Chang et al, 2003 ). Treating Tropaeolum majus with exogenous ethylene accelerates its flower senescence while treatment with ethylene biosynthesis inhibitors delays the process ( Silva et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

PlMYB308 Regulates Flower Senescence by Modulating Ethylene Biosynthesis in Herbaceous Peony

Wang

et al. 2022

Front. Plant Sci.

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Herbaceous peony is an important cut-flower plant cultivated worldwide, but its short vase life substantially restricts its economic value. It is well established that endogenous hormones regulate the senescence process, but their molecular mechanism in flower senescence remains unclear. Here, we isolated a MYB transcription factor gene, PlMYB308, from herbaceous peony flowers, based on transcriptome data. Quantitative real-time PCR analysis showed that PlMYB308 is strongly up-regulated in senescing petals, and its expression was induced by abscisic acid or ethylene and reduced by gibberellin in petals. Treatment with abscisic acid or ethylene accelerated herbaceous peony petal senescence, and gibberellin delayed the process. PlMYB308 silencing delayed peony flower senescence and dramatically increased gibberellin, but reduced ethylene and abscisic acid levels in petals. PlMYB308 ectopic overexpression in tobacco accelerated flower senescence and reduced gibberellin, but increased ethylene and abscisic acid accumulation. Correspondingly, five endogenous hormone biosynthetic genes showed variable expression levels in petals after PlMYB308 silencing or overexpression. A dual-luciferase assay and yeast one-hybrid analysis showed that PlMYB308 specifically binds the PlACO1 promoter. Moreover, treatment with ethylene and 1-MCP can accelerate PlMYB308 silencing-reduced senescence and delay PlMYB308- overexpression-induced senescence. We also found that PlACO1 silencing delayed senescence in herbaceous peony petals. Taken together, our results suggest that the PlMYB308-PlACO1 regulatory checkpoints positively mediate the production of ethylene, and thus contribute to senescence in herbaceous peony flowers.

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Postharvest Biology and Technology of Cut Flowers and Potted Plants

Reid¹,

Jiang²

2012

Horticultural Reviews

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The relatively brief postharvest life of most cut flowers and potted flowering plants can be extended by a range of technologies. Studies have shown that vase life is negatively correlated with respiration after harvest, so prompt cooling to the lowest safe storage temperature is a key to long-distance transport of these perishable crops. Forced air cooling is the method of choice for cut flowers, and vacuum cooling has been shown to be very effective for cooling potted plants. In contrast to some other horticultural crops, controlled and modified atmospheres seem to have little effect on petal respiration, and these techniques have not proved commercially useful in the marketing of many cut flowers. Low temperatures are also important in managing the effect of other factors contributing to early senescence, including water loss, the effects of ethylene, leaf yellowing, and the growth of diseases, particularly caused by Botrytis cinerea. Ornamentals originating in the tropics and subtropics cannot be cooled below 10 C because they rapidly show the symptoms of chilling injury. Chemical strategies to improve the life of ornamentals include the application of abscisic acid to reduce water loss, particularly in potted and bedding plants, pretreatment with the volatile ethylene inhibitor 1-methylcyclopropene (1-MCP) to prevent the 1

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Cited by 26 publications

References 18 publications

Effects of various chemical agents and early ethylene production on floral senescence of Hibiscus syriacus L.

Effects of various chemical agents and early ethylene production on floral senescence of Hibiscus syriacus L.

PlMYB308 Regulates Flower Senescence by Modulating Ethylene Biosynthesis in Herbaceous Peony

Postharvest Biology and Technology of Cut Flowers and Potted Plants

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