Acid invertase activities of dahlia ‘Kokucho’ petals during flower opening and following cutting and treatment with 6-benzylaminopurine

Shimizu-Yumoto, Hiroko; Tsujimoto, Naoki; Naka, Terufumi

doi:10.1016/j.scienta.2020.109525

Cited by 13 publications

(17 citation statements)

References 22 publications

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“…The results of the HPLC analysis were consistent with those reported in the literature; in particular, that the main carbohydrates in dahlia petals were glucose and fructose, and that the carbohydrate contents in petals decreased with time in the postharvest period without exogenous sugar supply (Azuma et al, 2019;Shimizu-Yumoto et al, 2020). The presence of an abscission layer on the petal-ovary boundaries significantly affected the water and carbohydrate flows into the petals.…”

Section: Discussionsupporting

confidence: 88%

Ethylene-sensitive Abscission Layer Formation and Petal Senescence in Cut Dahlia Inflorescences

et al. 2021

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Cut dahlia (Dahlia Cav.) flowers have recently become popular in Japan, but their marketability is limited by their poor vase life. During the postharvest period, the senescence of petals initiates from the outermost whorl and then proceeds into the inner petals. We found that the drawing resistances of petals in the dahlia 'Kokuchou', 'Nesshou', and 'Saisetsu' decreases with time because the petals gradually detach from the ovaries. A reduction in drawing resistance occurred prior to the end of vase life. Exogenous ethylene treatment of 'Saisetsu' cut inflorescences accelerated the decline of the petal drawing resistance and thus shortened the vase life. Ethylene production by individual florets in cut inflorescences began before or on the day of harvest. Simultaneously, abscission layers developed at the petal-ovary boundaries of the outermost florets. The florets without ovaries, which did not form the abscission layer, had a longer life than the florets with ovaries. Furthermore, we observed a marked rise in petal sugar contents in florets without ovaries compared to those with ovaries when maintained in 2% fructose. These results indicate that ethylene-promoted abscission layer development directs the course of petal senescence, which is characterized by wilting and discoloration due to a blocking of water flow and carbohydrates into the petals.

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Section: Discussionsupporting

confidence: 88%

Ethylene-sensitive Abscission Layer Formation and Petal Senescence in Cut Dahlia Inflorescences

et al. 2021

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“…Glucose was the major sugar that accumulated in both the floral buds and the open florets of Dendrobium inflorescences (Figs. 2B, 2E), indicating that reducing sugars formed a large proportion of the carbohydrate pool in Dendrobium, in common with that in many other-but not all-cut flowers (Ho and Nichols, 1977;Trusty and Miller, 1991;Yamane et al, 1993;Lukaszewska, 1995;van Meeteren et al, 1995;Ichimura and Hisamutsu, 1999;van der Meulen-Muisers et al, 2001;Kumar et al, 2007;Yamada et al, 2007;Ketsa and Karunsatitchai, 2010;Shimizu-Yumoto et al, 2020). In contrast, fructose was the major reducing sugar that accumulated in chrysanthemum (Adachi, 1999), snapdragon (Ichimura and Hisamutsu, 1999) and rose (van Doorn et al, 1991;Ichimura et al, 2005;Yamada et al, 2007), while non-reducing sugars were the major carbohydrates that accumulated throughout the flower development of Lilium pumilum (Santos et al, 2016).…”

Section: Discussionmentioning

confidence: 89%

“…2B) in Dendrobium. Studies have shown that floral buds are a strong sink during flower development (Kuiper et al, 1995;Kumar et al, 2007;Ketsa and Karunsatitchai, 2010;Shimizu-Yumoto et al, 2020), supporting the assumption that floral buds are active metabolic centers and that they rapidly use reducing sugars for their growth and development, resulting in a lower level of reducing sugars in floral buds (Kumar et al, 2007;Yamada et al, 2007).…”

Section: Discussionmentioning

confidence: 91%

“…Hence, a holding solution that contained glucose increased flower vase life longer than a solution containing sucrose and an anti-microbial compound (Ketsa and Boonrote, 1990;Cho et al, 2001;Ketsa, 2006;Watanabe et al, 2013;Hirose et al, 2020). In some cut flowers, sucrose treatment increased only the fructose content in open florets, although there was no increase in the sugars in the floral buds such as snapdragon (Ichimura and Hisamutsu, 1999), rose (Yamada et al, 2007) or dahlia (Shimizu-Yumoto et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…The inclusion of sucrose in preservative solutions for various Dendrobium cultivars has been reported (Ketsa and Boonrote, 1990;Ketsa et al, 1995;Rattanawisalanon et al, 2003;Pattaravayo et al, 2013). The invertase enzyme has been shown to have an important role in the sugar metabolism of a range of different cut flower species (Sturm and Tang, 1999;Ito et al, 2007;Kumar et al, 2008;Shimizu-Yumoto et al, 2020). However, there is little information available on the activity of acid invertase in cut Dendrobium flowers, especially in flowers treated with sucrose.…”

Section: Introductionmentioning

confidence: 99%

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Influence of sucrose feeding on sugar metabolism and invertase activity in cut Dendrobium flowers

2022

ANRES

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Importance of the work:The invertase enzyme is important for sugar metabolism; however, there is little information available on invertase activity in Dendrobium flowers. Objectives: To investigate the changes in acid invertase activity and sugars in cut Dendrobium flowers held in a vase solution.Materials & Methods: Inflorescences of Dendrobium cv. Khao Sanan were held either in distilled water or in solutions containing a combination of germicidal compounds and sucrose. The invertase activity and concentrations of sucrose, glucose and fructose in floral buds and open florets were determined. Results: Cell wall invertase activity increased at bud opening; however, there was no increase in vacuolar invertase activity. Sucrose treatment increased cell wall invertase activity in the perianth but not in the column and did not increase vacuolar invertase activities in either the perianth or the column. Main finding: Cell wall invertase activity was higher than vacuolar invertase activity for all flower developmental stages. Sucrose treatment stimulated the accumulation of hexoses in the floral buds and increased cell wall invertase activity in the perianth.

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The Dendrobium Orchid: Botany, horticulture, and utilization

Ketsa

Warrington

2023

Crop Science

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Dendrobium, one of the largest genera of tropical orchids, is grown commercially on a large scale with an important economic impact in several ASEAN countries.Dendrobium orchids can be grown in a wide range of climates, but flower production is best under tropical conditions. Due to being the most popular orchid for cut flower production, many hybrids of Dendrobium have been produced with colorful and attractive blooms. Cut flowers of Dendrobium are popular worldwide. In addition, many Dendrobium cultivars can be grown as flowering potted plants and for other purposes such as in medicinal applications and for use in decorative products. Postharvest physiology and technology are important in maintaining the quality of both cut flowers and potted plants from production sites to the marketplace. Plants of the Dendrobium genus also contain a wide diversity of bioactive compounds that can be developed into medicinal and cosmetic products. This review describes the botany, cultivation, postharvest physiology, handling and utilization of Dendrobium.

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Acid invertase activities of dahlia ‘Kokucho’ petals during flower opening and following cutting and treatment with 6-benzylaminopurine

Cited by 13 publications

References 22 publications

Ethylene-sensitive Abscission Layer Formation and Petal Senescence in Cut Dahlia Inflorescences

Ethylene-sensitive Abscission Layer Formation and Petal Senescence in Cut Dahlia Inflorescences

Influence of sucrose feeding on sugar metabolism and invertase activity in cut Dendrobium flowers

The Dendrobium Orchid: Botany, horticulture, and utilization

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