Characterization of Differentially Expressed Genes Under Salt Stress in Olive

Overview

Journal Int J Mol Sci

Publisher MDPI

Specialties Biochemistry
Chemistry
Molecular Biology

Date 2022 Jan 11

PMID 35008580

Authors

Soraya Mousavi

Roberto Mariotti

Maria Cristina Valeri

Luca Regni

Emanuele Lilli

Emidio Albertini

Primo Proietti

Daniela Businelli

Luciana Baldoni

Affiliations

Soon will be listed here.

Abstract

Climate change, currently taking place worldwide and also in the Mediterranean area, is leading to a reduction in water availability and to groundwater salinization. Olive represents one of the most efficient tree crops to face these scenarios, thanks to its natural ability to tolerate moderate salinity and drought. In the present work, four olive cultivars (Koroneiki, Picual, Royal de Cazorla and Fadak86) were exposed to high salt stress conditions (200 mM of NaCl) in greenhouse, in order to evaluate their tolerance level and to identify key genes involved in salt stress response. Molecular and physiological parameters, as well as plant growth and leaves' ions Na and K content were measured. Results of the physiological measurements showed Royal de Cazorla as the most tolerant cultivar, and Fadak86 and Picual as the most susceptible ones. Ten candidate genes were analyzed and their complete genomic, CDS and protein sequences were identified. The expression analysis of their transcripts through reverse transcriptase quantitative PCR (RT-qPCR) demonstrated that only , , and were upregulated in tolerant cultivars, thus suggesting their key role in the activation of a salt tolerance mechanism.

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