Ethylene‐insensitive floral senescence in Sandersonia aurantiaca (Hook.)

Abstract We have demonstrated that the senescence of Sandersonia aurantiaca (Hook.) flowers is insensitive to ethylene. Treating detached, physiologically mature flowers with propylene (0.5%, 24 h) did not alter the patterns of colour change, fresh weight, or respiration which normally occur as the flowers senesce. Silver thiosulphate (STS, 1 mM) did not extend the vase life of the flowers. Postharvest ethylene production by flowers was negligible, regardless of whether they had been exposed to propylene and or STS. Cycloheximide treatments (1 μM, 100 μM) inhibited the loss of pigment or fading associated with flower senescence. This suggests that de novo protein synthesis is required for pigment degradation in senescing sandersonia flowers. However, 100 μM cycloheximide also caused detached flowers to wilt prematurely, thereby changing the normal sequence of events that occur during senescence in this flower. Exposing flowers to actinomycin D caused a subtle change in their pattern of senescence and in v...

[1]  J. Eason,et al.  Development and senescence of Sandersonia aurantiaca (Hook.) flowers , 1995 .

[2]  M. Reid,et al.  The Effect of Protein Synthesis Inhibition on Petal Senescence in Cut Bulb Flowers , 1994 .

[3]  A. Stead,et al.  Molecular and Cellular Aspects of Plant Reproduction: The physiology of petal senescence which is not initiated by ethylene , 1994 .

[4]  W. Woodson.  Molecular and Cellular Aspects of Plant Reproduction: Molecular biology of flower senescence in carnation , 1994 .

[5]  A. Brandt,et al.  Variation in Flower Senescence and Ethylene Biosynthesis among Carnations , 1992 .

[6]  A. Stead,et al.  Flower senescence in daylily (Hemerocallis) , 1992 .

[7]  Rodney B. Jones,et al.  Postharvest Handling of Cut Gloriosa rothschildiana O'Brien (Liliaceae) Flowers , 1992 .

[8]  K. Singh,et al.  Role of ethylene in keeping quality of chrysanthemum flowers. , 1992 .

[9]  C. Brady,et al.  Normal ripening cultivars of Pyrus serotina are either climacteric or non-climacteric , 1991 .

[10]  A. Borochov,et al.  Physiology and Biochemistry of Flower Petal Senescence , 2011 .

[11]  E. Woltering,et al.  Role of Ethylene in Senescence of Petals—Morphological and Taxonomical Relationships , 1988 .

[12]  B. Dunbar.  Two-Dimensional Electrophoresis and Immunological Techniques , 1987, Springer US.

[13]  C. S. Whitehead,et al.  Roles of ethylene and 1‐aminocyclopropane‐1‐carboxylic acid in pollination and wound‐induced senescence of Petunia hybrida flowers , 1984 .

[14]  H. Veen.  Silver thiosulphate: An experimental tool in plant science , 1983 .

[15]  M. Reid,et al.  Pulse Treatments with the Silver Thiosulfate Complex Extend the Vase Life of Cut Carnations1 , 1980, Journal of the American Society for Horticultural Science.

[16]  A. Halevy,et al.  Senescence and Postharvest Physiology of Cut Flowers, Part 1 , 2011 .

[17]  D. Dilley,et al.  Regulation of Senescence in Carnation (Dianthus caryophyllus) by Ethylene: Mode of Action. , 1977, Plant physiology.

[18]  E. Beyer.  A potent inhibitor of ethylene action in plants. , 1976, Plant physiology.

[19]  W. J. Carpenter,et al.  THE ROLE OF CHEMICAL ADJUVANTS AND ETHYLENE SYNTHESIS ON CUT FLOWER LONGEVITY , 1975 .

[20]  P. Matile,et al.  Function of Lysosomes and Lysosomal Enzymes in the Senescing Corolla of the Morning Glory (Ipomoea purpurea) , 1971 .

[21]  T. Rees,et al.  Effects of cycloheximide on protein synthesis and respiration in disks of carrot storage tissue , 1971 .

[22]  U. K. Laemmli,et al.  Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4 , 1970, Nature.

[23]  S P Burg,et al.  Molecular requirements for the biological activity of ethylene. , 1967, Plant physiology.