In-field study on traditional Italian tomato landraces The constitutive activation of the ROS scavenging machinery reduces effects of drought stress

In-field study on traditional Italian tomato landraces : The constitutive activation of the ROS scavenging machinery reduces effects of drought stress

Copyright © 2017 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 118(2017) vom: 05. Sept., Seite 150-160
1. Verfasser: Landi, Simone (VerfasserIn)
Weitere Verfasser: De Lillo, Alessia, Nurcato, Roberta, Grillo, Stefania, Esposito, Sergio
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article APX Catalase Drought stress G6PDH Hydrogen-peroxide Tomato landraces Free Radical Scavengers
Beschreibung
Zusammenfassung:Copyright © 2017 Elsevier Masson SAS. All rights reserved.
The involvement and the efficiency of the antioxidants scavenging system upon drought were examined by comparing traditional tomato landraces with respect to an industrial commercial genotype (Red Setter); for the first time, comprehensive analyses of physiological, biochemical and molecular parameters were investigated directly under real field conditions, in a typical agricultural environment of Southern Italy. The characterization of the responses upon drought evidenced peculiar changes in stomatal conductance, ascorbate peroxidase and catalase activities and expression in drought tolerant tomato landraces, with respect to the industrial genotype. An in silico analysis (promoter and co-expression study) coupled to a phylogenetic investigation of selected enzymes was performed, reinforcing the hypothesis of a basal activation of ROS scavenging machinery in the Mediterranean landraces. Thus our data suggest a constitutive increase in the expression and activities of specific enzymes involved in ROS detoxification that can play a pivotal role in the drought response shown by tomato landraces. Therefore, traditional landraces could represent an important source of useful genetic variability for the improvement of commercial varieties; their ROS detoxifying capabilities denote peculiar aspects worth being explored to better describe their specific stress tolerance
Beschreibung:Date Completed 21.12.2017
Date Revised 07.12.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1873-2690
DOI:10.1016/j.plaphy.2017.06.011