@ARTICLE{TreeBASE2Ref27140,
author = {Shiri Goldental-Cohen and Carmit Burstein and Iris Biton and Sivan Ben Sasson and Amit Sadeh and Yair Manni and Adi doron-faigenboim and Hanita Zemach and Doron Schneider and Reuben Birger and Shimon Meir and Sonia Philosoph-Hadas and Vered Irihomovitch and Benjamin Avidan and Shimon Lavee and Giora Ben-Ari},
title = {Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound.},
year = {2017},
keywords = {},
doi = {},
url = {http://},
pmid = {},
journal = {BMC Plant Biology},
volume = {},
number = {},
pages = {},
abstract = {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. The fruit abscission zone 3 (FAZ3), located between the fruit and the pedicel, was found to be the active AZ in mature fruits, whereas FAZ2, between the pedicel and the rachis, is the flower active AZ as well as functioning as an 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 five 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. 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.}
}
Matrix 3267 of Study 20915

Citation title:
"Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound.".

Study name:
"Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound.".

This study is part of submission 20915
(Status: Published).
Matrices
Title: Marasmius nLSU rDNA
Description: Legacy TreeBASE Matrix ID = M3935
Rows
Taxon Label |
Row Segments |
Characters 1?–30 |
Marasmius fulvoferrugineus |
(none)
|
TAGTAACTGCGAGTGAA?AGGGAAAAGCTC |
Marasmius wynneae BRNM 693350 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Amyloflagellula inflata |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius anomalus |
(none)
|
--------------GAAGAGGGAAAAGCTC |
Marasmiellus DMC 027 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius megistus 002a |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius bekolacongoli BRNM69 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius nodulocystis 007 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius rotula AF261345 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius graminum |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius bekolacongoli 005b |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius haematocephalus |
(none)
|
------CTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius wynneae BRNM 693619 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmiellus palmivorus AY6394 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius rotula AY207238 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius mbalmayoensis 001b |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius delectans |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Crinipellis campanella DAOM1 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius mbalmayoensis 001a |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius sp |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius mbalmayoensis 001c |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius bekolacongoli BRNM 6 |
(none)
|
-------------TGAAGAGGGAAAAGCTC |
Marasmius capillaris DED4345 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmiuso megistus 002b |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius oreades BRNM 576445 |
(none)
|
-------TGCGAGTGAAGAGGGAAAAGCTC |
Marasmius siccus |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius bekolacongoli 005a |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Marasmius nodulocystis 009 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Crinipellis maxima DAOM196 |
(none)
|
TAGTAACTGCGAGTGAAGAGGGAAAAGCTC |
Columns
None of the columns has a description.