Ethephon induced oxidative stress in the olive leaf abscission zone enables development of a selective abscission compound

BMC Plant Biology
S Goldental-CohenGiora Ben-Ari

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 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 treatm...Continue Reading

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Citations

Feb 15, 2020·International Journal of Molecular Sciences·Zhi-Lang QiuXiao-Peng Wen
May 31, 2020·International Journal of Molecular Sciences·Agata KućkoJuan De Dios Alché
Oct 28, 2019·Frontiers in Plant Science·Shiri Goldental-CohenGiora Ben-Ari
Apr 25, 2020·International Journal of Molecular Sciences·Dingsha JinMeizhen Song
Jun 18, 2019·BioMed Research International·Xiulan XieYi Cai
Apr 4, 2021·International Journal of Molecular Sciences·Emilia WilmowiczKatarzyna Panek

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Datasets Mentioned

BETA
PRJNA342541
SRR4236914

Methods Mentioned

BETA
RNAseq
GTPases
RNA-Seq
GTPase

Software Mentioned

BLAST
fastq
SEA
R Bioconductor
Venny
edgeR package
Blast2go
JMP
bowtie2 aligner
FASTX Toolkit

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