Increasing plant longevity and associated metabolic events in potted carnation (Dianthus caryophyllus L. Clove Pink)

Abstract

The effects of aminooxyacetic acid, benzyladenine, and 1-methylcyclopropene treatments on the post-production flower quality of potted carnation plants (Dianthus caryophyllus L. Clove Pink) were investigated considering ethylene production and antioxidant metabolism. Maximum plant longevity (17 days) was obtained using 70 ppb of 1-methylcyclopropene. As compared to control plants, ethylene production was significantly decreased by aminooxyacetic acid at concentrations over 100 mg L −1 , benzyladenine at 20 or 30 mg L -1, and 1-methylcyclopropene at 70 and 140 ppb. A significant increase in 1-aminocyclopropane-1-carboxylic-acid concentration was observed in 1-methylcyclopropene treated plants compared with the control ones. On the other hand, decline in 1-aminocyclopropane-1-carboxylic-acid concentration was observed after using 100 or 150 mg L −1 of aminooxyacetic acid. Use of 1-methylcyclopropene (70 or 140 ppb), aminooxyacetic acid (100 or 150 mg L −1 ), and benzyladenine (20 or 30 mg L −1 ) significantly decreased H 2 O 2 concentration and superoxide radical when compared with the untreated control. Significant increases in activities of superoxide dismutase, catalase, and peroxidase were noticed when plants were treated with 70 ppb 1-methylcyclopropene. In conclusion, aminooxyacetic acid, benzyladenine (at high concentrations), and 1-methylcyclopropene treatments can be suitable candidates for extending plant longevity, maintaining the visual quality, and reducing the loss of flower anthocyanin.

Antimicrobial Compounds from Leaf Extracts ofJatropha curcas,Psidium guajava, andAndrographis paniculata

“…The pH of these preservative solutions containing 15 mg/L P. guajava or A. paniculata leaf extracts was lower (32–34%) than the final pH of tap water. The increase of pH could be due to the increase in OH − group resulting from metabolic activities in the flowers [ 34 ]. There was absence of bacteria in the 8-HQC preservative solution and the flower vase life was 8 days ( Table 5 ).…”

Blue Light Improves Vase Life of Carnation Cut Flowers Through Its Effect on the Antioxidant Defense System

“…Post-harvest senescence of cut flowers is an active process involving physiological and biochemical changes ( Buchanan-Wollaston and Morris, 2000 ; Rubinstein, 2000 ; Battelli et al, 2011 ), and is regulated by a cell death program ( Arora and Singh, 2006 ; Van Doorn and Woltering, 2008 ; Wagstaff et al, 2009 ; Van Doorn, 2011 ). Physiological and biochemical aspects of carnation senescence have previously been described ( Sugawara et al, 2002 ; Shibuya and Ichimura, 2010 ; Satoh, 2011 ), and conditions during growth of mother plants, storage and handling, environment, and phyto-hormones all play roles in senescence regulation ( Karimi et al, 2012 ; Asil et al, 2013 ; Hotta et al, 2016 ). Particularly since it is a model flower, the mechanisms involved in vase life determination have attracted much interest ( Sugawara et al, 2002 ; Tanase et al, 2008 ; Satoh, 2011 ; Tanase et al, 2015 ).…”

Protective effects of polyamines on regulation of senescence in spray carnation cut flowers (Dianthus caryophyllus’Spotlight’)

“…The time of the onset of ethylene production and the amount of ethylene produced in the flower vary with the carnation cultivar (Nukui et al, 2004). In our previous studies using ethylene inhibitors increased the vase life of carnation flowers (Karimi et al 2012;Karimi et al, 2013;Hassanpour et al, 2013). Lee et al (1997) reported that treatment of 1 mmol spermine extended the vase life of carnation flowers and reduced ethylene production.…”

“…Also, ethylene has been shown to play an important role in flower senescence regulation. Treatment of carnation cut flowers with ethylene inhibitors significantly extended vase life and CAT, SOD and POD enzyme activity (Hunter et al, 2004;Karimi et al, 2012;Karimi et al, 2013). Meanwhile, more studies suggested that treatment with PAs significantly improved fresh mass, uptake of vase solution, flower opening, vase life and more parameters of ornamental plants (Pandey et al, 2000;Rubinowska & Miachałek, 2009;Kandil et al, 2011;Mahgoub et al, 2011;Hosseini Farahi et al, 2013;Ataii et al, 2015).…”