Characterisation of respiration, ethylene production, and carbohydrate contents during flower opening inEpidendrum ibaguense

Autor:	Clarice Aparecida Megguer, José Geraldo Barbosa, Fernando Luiz Finger, Raimundo Santos Barros, Ana Maria Mapeli, Lucilene Silva de Oliveira
Rok vydání:	2009
Předmět:	Epidendrum ibaguense Oxidase test Ethylene Sucrose biology Starch Sucrose synthase activity Horticulture Carbohydrate biology.organism_classification chemistry.chemical_compound chemistry Botany Genetics biology.protein Sucrose synthase
Zdroj:	The Journal of Horticultural Science and Biotechnology. 84:609-612
ISSN:	2380-4084 1462-0316
DOI:	10.1080/14620316.2009.11512574
Popis:	SummaryThe opening of flowers in Epidendrum ibaguense is characterised by continuous drops in respiration, ethylene production, and 1-aminocyclopropone-1-carboxylate (ACC) oxidase activity from the bud stage to fully open. Later, an increase in ethylene production and ACC oxidase activity occurred, suggesting autocatalytic production of ethylene, beginning at an early stage of senescence. Regardless of developmental stage, the main non-structural carbohydrates in flowers were non-reducing sugars [23.7% (w/w) fresh weight (FW)]. Starch accounted for 3.1% (w/w) FW and reducing sugars for 0.7% (w/w) FW. No depletion in the level of any carbohydrate was observed throughout senescence. At the beginning of floral senescence, a sharp increase occurred in the activities of acid and alkaline invertases, suggesting a role for both enzymes in the cleavage of sucrose. However, no major changes in sucrose synthase activity were found during flower development.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::33ef77595a1a8fe57f6093c7845bbee6 https://doi.org/10.1080/14620316.2009.11512574 Zobrazit plný text záznamu