1-MCP blocks ethylene-induced petal abscission of Pelargonium peltatum but the effect is transient

Cameron, A. Colin; Reid, Michael S.

doi:10.1016/s0925-5214(00)00189-7

Cited by 97 publications

(53 citation statements)

References 19 publications

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“…Delays in floral senescence using 1-MCP were observed in many species, such as alpinias (Mattiuz, 2005), roses Mattiuz, 2010), oriental lilies (Celikel et al, 2002), geraniums (Cameron;Reid, 2001;Jones et al, 2001) and orchids (Moraes et al, 2007). Serek, Sisler and Reid (1995) observed that the use of 1-MCP increased the vase life of Alstroemeria cut flowers.…”

Section: Galati V C Et Almentioning

confidence: 99%

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

et al. 2017

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Cut flowers deteriorate quickly and require postharvest technologies to increase their durability, which is usually around 8 days. Due to the scarce information related to postharvest physiology of Alstroemeria cut flowers, this study aimed to verify the best dose of 1-methylcyclopropene (1-MCP) to the postharvest conservation of inflorescences of Alstroemeria cv. Ajax, considering the factors associated with floral senescence and loss of the decorative life. The stems were submitted to four doses of 1-MCP (0; 100; 250; 500 ppb), then placed in containers with distilled water and stored at room temperature (22 ºC). The treatments were performed in triplicate containing three stems per replicate. The evaluations were performed every three days for a total of 12 days of storage. An F test was conducted, and the means were compared by the Tukey test (p≤0.05). Among the applied treatments the dose of 500 ppb of 1-MCP reduces the loss of water of the stems of alstroemerias during the storage period, keeping the petals turgids and the levels of carotenoids and anthocyanins high, however, this was not enough to keep the decorative quality of the flowers, once the 1-MCP did not solve the problems of yellowing of the leaves and floral openning, which are important characteristics for its commercialization.Index terms: Ethylene; longevity; pigments; enzyme activity. RESUMOAs flores de corte se deterioram muito rapidamente e necessitam de tecnologias pós-colheita para aumentar a durabilidade, que é normalmente em torno de 8 dias. Devido às escassas informações relacionadas à fisiologia pós-colheita de flores de Alstroeméria, a presente pesquisa teve como objetivo verificar qual a melhor dose de 1-metilciclopropeno (1-MCP) na conservação pós-colheita de inflorescências de Alstroemeria cv. Ajax, considerando os fatores associados à senescência floral e perda da vida decorativa. As hastes foram submetidas a quatro doses de 1-MCP (0; 100; 250; 500 ppb), posteriormente foram colocadas em recipientes com água destilada e armazenadas em temperatura de ambiente (22 ºC). Os tratamentos foram realizados em triplicata contendo três hastes por repetição. As avaliações foram realizadas a cada três dias perfazendo um total de 12 dias de armazenamento. Foi realizado um teste de F, e as médias comparadas pelo teste de Tukey (P≤0,05). Entre os tratamentos aplicados a dose de 500 ppb de 1-MCP reduziu a perda de água das hastes de alstroeméria durante o período de armazenamento, mantendo as pétalas túrgidas e os níveis de carotenoides e antocianinas altos, entretanto, isso não foi suficiente para manter a qualidade decorativa das flores, uma vez que o 1-MCP não resolveu os problemas de amarelecimento das folhas e abertura floral, que são importantes características para sua comercilização.Termos para indexação: Etileno; longevidade; pigmentos; atividade enzimática.

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Section: Galati V C Et Almentioning

confidence: 99%

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

et al. 2017

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“…CAT activity was pronounced at 20 mg L -1 and 40 mg L risks for human health and environment. Although 1-MCP blocks ethylene-induced petal abscission of Pelargonium, the effect is impermanent (Cameron and Reid, 2001;Damunupola and Joyce, 2006). The development of nanotechnology in physiology and biochemistry has expanded the application area of nanomaterials in different fields due to their unique characteristics (e.g., large surface area-to-volume ratio, ability to engineer electron exchange, and highly surface reactive capabilities) (Scrinis and Lyons, 2007).…”

Section: Introductionmentioning

confidence: 99%

Defense enzyme activities and biochemical variations of Pelargonium zonale in response to nanosilver application and dark storage

Hatami¹,

Ghorbanpour²

2014

Turk J Biol

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IntroductionPelargonium zonale is one of the most important bedding ornamental plants, which is grown as a potted plant for its colorful, single or double showy flowers and attractive foliage. Leaf senescence and petal abscission are critical problems that break down cellular components and reduce the longevity and marketability values of many flowering plants (Serek et al., 1998). Moreover, leaf senescence is a complex molecular and physiological action that may result from several factors including phytohormones (e.g., abscisic acid and ethylene) and environmental stresses (e.g., temperature and darkness) (Weaver et al., 1998). Dark-induced senescence happens during commercial shipping and handling of Pelargonium species or other members of the family Geraniaceae (Reid et al., 2002). Many investigations suggested that the most important variations observed during plant senescence are chlorophyll degradation, increase in ethylene production, reduction in antioxidant enzyme activity, increase in reactive oxygen species (ROS) levels, and cell membrane damage (Prochazkova and Wilhelmova, 2007). This process has some similarities with natural senescence, which suggests that dark-induced cell death is a result of an active program that include the participation of signaling molecules, transcription factors, and catabolic enzymes (Buchanan-Wollaston et al., 2003). Plants are generally protected against this oxidative stresses by a wide range of radical scavenging systems such as antioxidative enzymes like superoxide dismutase (SOD), peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT), as well as nonenzymatic compounds like carotenoids (Cameron and Reid, 2001;Zimmermann and Zentgraf, 2005). Therefore, any treatment that can help diminish ROS levels would be clearly advantageous in improving the plant performance and longevity.Several approaches using ethylene antagonists such as silver nitrate (AgNO 3 ), silver thiosulfate (STS), and 1-methylcyclopropene (1-MCP) have been investigated over the years for improving quality and longevity of ethylene-sensitive flowers (Serek and Trolle, 2000). However, STS and AgNO 3 are heavy metal pollutant substances and were not used commercially due to their

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“…Treatment of C. uncinatum cultivars with the ethylene binding inhibitors silver thiosulphate (STS) liquid and 1-methylcyclopropene (1-MCP) gas reduced floral organ abscission (Joyce, 1988(Joyce, , 1989Serek et al, 1995;Macnish et al, 2000a, b). However, concern over the disposal of silver-containing waste solution into the environment has prompted legislators to restrict the use of STS on ornamentals (Cameron and Reid, 2001). On the other hand, a single 1-MCP treatment may only protect C. uncinatum flowers against ethylene for 2 to 4 days (Macnish et al, 2000a).…”

Section: Introductionmentioning

confidence: 99%