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An increase in ethylene sensitivity following pollination is the initial event triggering an increase in ethylene production and enhanced senescence of Phalaenopsis orchid flowers
Year:
1995
Source of publication :
Physiologia Plantarum
Authors :
פורת, רון
;
.
Volume :
93
Co-Authors:
Porat, R., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
Halevy, A.H., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
Serek, M., Royal Veterinary and Agricultural Univ, Dept. of Agricultural Sciences, Section of Horticulture, Rolighedsvej 23, Frederiksberg, DK-1958, Denmark
Borochov, A., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
Facilitators :
From page:
778
To page:
784
(
Total pages:
7
)
Abstract:
Cut Phalaenopsis (Phalaenopsis hybrid, cv. Herbert Hager) flowers usually last about 2 weeks. Following pollination however, there is a rapid acceleration of the wilting process, which is completed within 2 days. The first event detected following pollination was an increase in ethylene sensitivity. This increased sensitivity began about 4 h after pollination and peaked 6 h later. A subsequent increase in ethylene production could only be detected 12 to 14 h after pollination. Treatment of the flowers with silver thiosulfate or 1‐methylcyclopropene, both inhibitors of ethylene action, completely inhibited the pollination‐induced increase in ethylene production and the enhanced senescence of the flowers. This indicates that the pollination‐induced increase in ethylene production is a response to the existing ethylene. Treatment of flowers with calcium and its ionophore A23187, which increased ethylene sensitivity and protein phosphorylation, also promoted ethylene production and senescence of unpollinated flowers, EGTA, a calcium chelator, decreased the sensitivity of pollinated flowers to ethylene and delayed and decreased the pollination‐induced increase in ethylene production. We suggest that the pollination‐induced increase in ethylene sensitivity is the initial pollination‐induced event triggering the enhancement of ethylene production, which leads to enhanced senescence of Phalaenopsis flowers. Copyright © 1995, Wiley Blackwell. All rights reserved
Note:
Related Files :
Ethylene sensitivity
Phalaenopsis hydrid
Phalaenopsis spp.
pollination
senescence
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1399-3054.1995.tb05131.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23973
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:04
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Scientific Publication
An increase in ethylene sensitivity following pollination is the initial event triggering an increase in ethylene production and enhanced senescence of Phalaenopsis orchid flowers
93
Porat, R., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
Halevy, A.H., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
Serek, M., Royal Veterinary and Agricultural Univ, Dept. of Agricultural Sciences, Section of Horticulture, Rolighedsvej 23, Frederiksberg, DK-1958, Denmark
Borochov, A., Kennedy-Leigh Center for Horticulture Research, Faculty Agriculture, Hebrew Univ. of Jerusalem, P.O. Box 12, Rehovot, 76-110, Israel
An increase in ethylene sensitivity following pollination is the initial event triggering an increase in ethylene production and enhanced senescence of Phalaenopsis orchid flowers
Cut Phalaenopsis (Phalaenopsis hybrid, cv. Herbert Hager) flowers usually last about 2 weeks. Following pollination however, there is a rapid acceleration of the wilting process, which is completed within 2 days. The first event detected following pollination was an increase in ethylene sensitivity. This increased sensitivity began about 4 h after pollination and peaked 6 h later. A subsequent increase in ethylene production could only be detected 12 to 14 h after pollination. Treatment of the flowers with silver thiosulfate or 1‐methylcyclopropene, both inhibitors of ethylene action, completely inhibited the pollination‐induced increase in ethylene production and the enhanced senescence of the flowers. This indicates that the pollination‐induced increase in ethylene production is a response to the existing ethylene. Treatment of flowers with calcium and its ionophore A23187, which increased ethylene sensitivity and protein phosphorylation, also promoted ethylene production and senescence of unpollinated flowers, EGTA, a calcium chelator, decreased the sensitivity of pollinated flowers to ethylene and delayed and decreased the pollination‐induced increase in ethylene production. We suggest that the pollination‐induced increase in ethylene sensitivity is the initial pollination‐induced event triggering the enhancement of ethylene production, which leads to enhanced senescence of Phalaenopsis flowers. Copyright © 1995, Wiley Blackwell. All rights reserved
Scientific Publication
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