Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 321597
Title Xylem occlusion in Bouvardia flowers : evidence for a role of peroxidase and catechol oxidase
Author(s) Vaslier, N.; Doorn, W.G. van
Source Postharvest Biology and Technology 28 (2003)2. - ISSN 0925-5214 - p. 231 - 237.
DOI https://doi.org/10.1016/S0925-5214(02)00197-7
Department(s) Agrotechnological Research Institute
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) cut chrysanthemum flowers - polyphenol oxidase - tissue - water - cells - stems
Abstract During vase life, Bouvardia flowers show rapid leaf wilting, especially if they are stored dry prior to placement in water. Wilting is due to a blockage in the basal stem end. We investigated the possible role of peroxidase and catechol oxidase in the blockage in cv. van Zijverden flowers, which were placed, for 5 h at 20 °C, in an aqueous solution containing enzyme inhibitors. Flowers were then stored dry in plastic bags (24 h at 5 °C, 100% RH) and placed in water at 20 °C without recutting the stems. Inhibitors of both peroxidase (hydroquinone, p-phenylene diamine, copper ions) and catechol oxidase (tropolone, 2,3-dihydroxynaphtalene) considerably delayed the time to leaf wilting. It is concluded that the blockage is apparently due to a wounding reaction and that it involves both peroxidase and catechol oxidase activity
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