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פותח על ידי קלירמאש פתרונות בע"מ -
Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound
Year:
2017
Source of publication :
BMC Plant Biology
Authors :
אבידן, בנימין
;
.
בורשטיין, כ'
;
.
ביטון, איריס
;
.
בן ששון, סיון
;
.
בן-ארי, גיורא
;
.
גולדנטל-כהן, שירי
;
.
דורון-פייגנבאום, עדי
;
.
יריחימוביץ', ורד
;
.
לביא, שמעון
;
.
מאיר, שמעון
;
.
מני, יאיר
;
.
פילוסוף-הדס, סוניה
;
.
צמח, חניתה
;
.
שדה, עדי
;
.
Volume :
17
Co-Authors:
Goldental-Cohen, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel, The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, Rehovot, Israel
Burstein, C., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Biton, I., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Ben Sasson, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Sadeh, A., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Many, Y., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Doron-Faigenboim, A., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Zemach, H., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Mugira, Y., The Agricultural Extension Service of Israel, Bet-Dagan, Israel
Schneider, D., Migal - Galilee Technology Center, P.O. Box 831, Kiryat Shemona, Israel
Birger, R., Agriculture Valley Center, P.O. Box 73, Migdal Haemeq, Israel
Meir, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Philosoph-Hadas, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Irihomovitch, V., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Lavee, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel, The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, Rehovot, Israel
Avidan, B., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Ben-Ari, G., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Facilitators :
From page:
0
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Total pages:
1
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Abstract:
Background: Table olives (Olea europaea L.), despite their widespread production, are still harvested manually. The low efficiency of manual harvesting and the rising costs of labor have reduced the profitability of this crop. A selective abscission treatment, inducing abscission of fruits but not leaves, is crucial for the adoption of mechanical harvesting of table olives. In the present work we studied the anatomical and molecular differences between the three abscission zones (AZs) of olive fruits and leaves. Results: The fruit abscission zone 3 (FAZ3), located between the fruit and the pedicel, was found to be the active AZ in mature fruits and is sensitive to ethephon, whereas FAZ2, between the pedicel and the rachis, is the flower active AZ as well as functioning as the most ethephon induced fruit AZ. We found anatomical differences between the leaf AZ (LAZ) and the two FAZs. Unlike the FAZs, the LAZ is characterized by small cells with less pectin compared to neighboring cells. In an attempt to differentiate between the fruit and leaf AZs, we examined the effect of treating olive-bearing trees with ethephon, an ethylene-releasing compound, with or without antioxidants, on the detachment force (DF) of fruits and leaves 5 days after the treatment. Ethephon treatment enhanced pectinase activity and reduced DF in all the three olive AZs. A transcriptomic analysis of the three olive AZs after ethephon treatment revealed induction of several genes encoding for hormones (ethylene, auxin and ABA), as well as for several cell wall degrading enzymes. However, up-regulation of cellulase genes was found only in the LAZ. Many genes involved in oxidative stress were induced by the ethephon treatment in the LAZ alone. In addition, we found that reactive oxygen species (ROS) mediated abscission in response to ethephon only in leaves. Thus, adding antioxidants such as ascorbic acid or butyric acid to the ethephon inhibited leaf abscission but enhanced fruit abscission. Conclusion: Our findings suggest that treating olive-bearing trees with a combination of ethephon and antioxidants reduces the detachment force (DF) of fruit without weakening that of the leaves. Hence, this selective abscission treatment may be used in turn to promote mechanized harvest of olives. © 2017 The Author(s).
Note:
Related Files :
abscission
Agriculture
antioxidants
ethylene
indoleacetic acid
metabolism
Olea
olive
reactive oxygen species
עוד תגיות
תוכן קשור
More details
DOI :
10.1186/s12870-017-1035-1
Article number:
87
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27050
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:27
Scientific Publication
Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound
17
Goldental-Cohen, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel, The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, Rehovot, Israel
Burstein, C., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Biton, I., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Ben Sasson, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Sadeh, A., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Many, Y., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Doron-Faigenboim, A., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Zemach, H., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Mugira, Y., The Agricultural Extension Service of Israel, Bet-Dagan, Israel
Schneider, D., Migal - Galilee Technology Center, P.O. Box 831, Kiryat Shemona, Israel
Birger, R., Agriculture Valley Center, P.O. Box 73, Migdal Haemeq, Israel
Meir, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Philosoph-Hadas, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Irihomovitch, V., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Lavee, S., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel, The Hebrew University of Jerusalem, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, Rehovot, Israel
Avidan, B., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Ben-Ari, G., The Volcani Center, Institute of Plant Sciences, ARO, Rishon LeZion, Israel
Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound
Background: Table olives (Olea europaea L.), despite their widespread production, are still harvested manually. The low efficiency of manual harvesting and the rising costs of labor have reduced the profitability of this crop. A selective abscission treatment, inducing abscission of fruits but not leaves, is crucial for the adoption of mechanical harvesting of table olives. In the present work we studied the anatomical and molecular differences between the three abscission zones (AZs) of olive fruits and leaves. Results: The fruit abscission zone 3 (FAZ3), located between the fruit and the pedicel, was found to be the active AZ in mature fruits and is sensitive to ethephon, whereas FAZ2, between the pedicel and the rachis, is the flower active AZ as well as functioning as the most ethephon induced fruit AZ. We found anatomical differences between the leaf AZ (LAZ) and the two FAZs. Unlike the FAZs, the LAZ is characterized by small cells with less pectin compared to neighboring cells. In an attempt to differentiate between the fruit and leaf AZs, we examined the effect of treating olive-bearing trees with ethephon, an ethylene-releasing compound, with or without antioxidants, on the detachment force (DF) of fruits and leaves 5 days after the treatment. Ethephon treatment enhanced pectinase activity and reduced DF in all the three olive AZs. A transcriptomic analysis of the three olive AZs after ethephon treatment revealed induction of several genes encoding for hormones (ethylene, auxin and ABA), as well as for several cell wall degrading enzymes. However, up-regulation of cellulase genes was found only in the LAZ. Many genes involved in oxidative stress were induced by the ethephon treatment in the LAZ alone. In addition, we found that reactive oxygen species (ROS) mediated abscission in response to ethephon only in leaves. Thus, adding antioxidants such as ascorbic acid or butyric acid to the ethephon inhibited leaf abscission but enhanced fruit abscission. Conclusion: Our findings suggest that treating olive-bearing trees with a combination of ethephon and antioxidants reduces the detachment force (DF) of fruit without weakening that of the leaves. Hence, this selective abscission treatment may be used in turn to promote mechanized harvest of olives. © 2017 The Author(s).
Scientific Publication
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