Virulence and indole-3-acetic acid (IAA) biosynthesis ability of Turkish Pseudomonas savastanoi pv. savastanoi isolates and susceptibility of some native olive genotypes

Spanish Journal of Agricultural Research

View Publication Info
 
 
Field Value
 
Title Virulence and indole-3-acetic acid (IAA) biosynthesis ability of Turkish Pseudomonas savastanoi pv. savastanoi isolates and susceptibility of some native olive genotypes
 
Creator Ustun, Nursen
Güven, Neziha
 
Subject Olive knot
IAA production
cultivar resistance
pathogenicity;
 
Description Aim of study: To evaluate the virulence and indole-3-acetic acid (IAA) biosynthesis ability of several Turkish P. savastanoi pv. savastanoi isolates and the susceptibility of some native genotypes to olive knot.
Area of study: The Aegean, Marmara, and Mediterranean Regions of Turkey.
Material and methods: 101 isolated bacteria were identified on the basis of biochemical, PCR for amplification of the bacterial iaaL gene, and pathogenicity tests. The virulence of the isolates was determined in a randomized experimental trial carried out by stem inoculation of pot-grown seedlings of olive (cv. ‘Manzanilla’) in the growing chamber. The amounts of IAA produced by the isolates were determined colorimetrically. The susceptibility of native olive genotypes was evaluated on 2-yr old plants inoculated with two distinct strains.
Main results: Tested P. savastanoi pv. savastanoi isolates showed significant differences in virulence found to be associated with their geographical origin. The isolates produced IAA amounts varied from 148.67 to 0.3 μg mL-1. The geographical variation in IAA biosynthesis ability of the isolates was observed. No correlation (R=0.0225) was determined between virulence and IAA amounts of the isolates. Native olive genotypes indicated different susceptibility levels to the olive knot pathogen. No genotype tested had complete resistance. However, low susceptible genotypes (‘Memecik’, ‘Ayvalık’ and ‘Uslu’) were identified. Some genotypes had variable reactions depending on the isolate used.
Research highlights: The results undergird the differences in the virulence and IAA production of the isolates within the area and also between geographical locations. Genotypes with low susceptibility can be used as genitors in further breeding studies. 
 
Publisher Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
 
Date 2021-10-25
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
application/pdf
 
Identifier https://revistas.inia.es/index.php/sjar/article/view/17492
10.5424/sjar/2021194-17492
 
Source Spanish Journal of Agricultural Research; Vol. 19 No. 4 (2021); e1003
Spanish Journal of Agricultural Research; Vol. 19 Núm. 4 (2021); e1003
2171-9292
 
Language eng
 
Relation https://revistas.inia.es/index.php/sjar/article/view/17492/5823
https://revistas.inia.es/index.php/sjar/article/view/17492/5836
 
Rights Copyright (c) 2021 Spanish Journal of Agricultural Research
https://creativecommons.org/licenses/by/4.0
 

Contact Us

The PKP Index is an initiative of the Public Knowledge Project.

For PKP Publishing Services please use the PKP|PS contact form.

For support with PKP software we encourage users to consult our wiki for documentation and search our support forums.

For any other correspondence feel free to contact us using the PKP contact form.

Find Us

Twitter

Copyright © 2015-2018 Simon Fraser University Library