Abstract
The activity of peroxidases in the proximal part of the flower peduncle of rose cv. Nubia was promoted by exogenous application of auxin but not by gibberellin or cytokinin. In cv. Mercedes the activity was promoted also by gibberellin and cytokinin. In the distal parts of the peduncles of both cultivars, peroxidase activity was not affected by any of the applied growth regulators. In young flowers of cv. Nubia the protein content of the penduncles was affected only by cytokinin, and in aged flowers only by auxin, while in “Mercedes” peduncles the content of protein was not affected by any of the applied growth regulators. The specific activity of peroxidases was promoted by auxin in peduncles of Nubia and by both auxin and cytokinin in peduncles of “Mercedes” flowers.
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References
Bradford MM (1976) Rapid and sensitive method for the quantitation of microgram quantities of protein utlizing the principle of protein dye binding. Anal Biochem 72: 248–254
Catesson M-A, Imberty A, Goldberg R and Czaninski Y (1985) Nature, localization and specificity of peroxidases involved in lignification process. In: H Greppin, C Penel and T Gaspar, eds. Molecular and Physiological Aspects of Plant peroxidases, 189–198. Genève: Université de Genève, Centre de Botanique
Chance B and Maehly AC (1955) Assay of catalases and peroxidases. Methods Enzymol 2: 764–775
Gaspar T, Penel C And Thorpe T (1982)-Peroxidases 1970–1980. Genève: Université de Genève, Centre de Botanique
Hanish ten Cate C and Bruinsma J (1973) Abscission of flower bud pedicels in Begonia 1. Effects of plant growth regulating substances on the abscission with intact plants and with explants. Acta Bot Neerl 22: 666–674
Jones RL (1985) Gibberellic acid and auxin influence the secretion of peroxidase. In: H Greppin, C Penel and T Gaspar, eds. Molecular and Physiological Aspects of Plant Peroxidases, 295–308. Genève: Universite de Genève, Centre de Botanique
Lyons RE and Widmer RE (1984) A gibberellin-auxin synergism associated with peduncle elongation and senescence in Cyclamen persicum Mill ‘Swan Lake’. Bot Gaz 145: 170–175
Sachs RM (1968) Control of intercalary growth in the scape of gerbera by auxin and gibberellin. Am J Bot 55: 62–68
Zamski E, Starkman F And Zieslin N (1990) Mechanical strength and anatomical structure of the peduncles of rose (Rosa × hybrida) flowers. Israel J Bot 40: 1–6.
Zieslin N (1990) Postharvest physiology of rose flowers. Acta Hortic 261: 257–264
Zieslin N and Ben-Zaken R (1991) Peroxidases, phenylalanine ammonia lyase and lignification in peduncles of rose flowers. Plant Physiol Biochem 29: 147–151
Zieslin N, Madori G and Halevy AH (1979) Involvement of hormonal balance in the control of the ‘bullhead’ malformation of Baccara flowers. J Exp Bot 30: 15–25
Zieslin N, Starkman F and Zamski E (1989) Growth of rose flower peduncles and effects of applied plant growth regulators. Plant Growth Regul 8: 65–76
Zieslin N, Starkman F and Zamski E (1989) Bending of rose peduncles and the activity of phenylalanine ammonia lyase in the peduncle tissue. Plant Physiol Biochem 27: 431–436
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Zieslin, N., Ben-Zaken, R. Effects of applied auxin, gibberellin and cytokinin on the activity of peroxidases in the peduncles of rose flowers. Plant Growth Regul 11, 53–57 (1992). https://doi.org/10.1007/BF00024433
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DOI: https://doi.org/10.1007/BF00024433