Response of Cucumis melo accessions to isolates of Pseudoperonospora cubensis with different levels of virulence

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33160309" target="_blank" >RIV/61989592:15310/16:33160309 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15410/16:33160309

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0304423815301928" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0304423815301928</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scienta.2015.09.028" target="_blank" >10.1016/j.scienta.2015.09.028</a>

Result language

angličtina

Original language name

Response of Cucumis melo accessions to isolates of Pseudoperonospora cubensis with different levels of virulence

Original language description

Melon (Cucumis melo) is seriously affected by Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew. Within C. melo, several genotypes resistant to P. cubensis have been described; however, we lack detailed experimental studies focused on deciphering variation in this host-pathogen interaction. The response of 115 accessions of C. melo to 8 isolates of P. cubensis was studied under controlled conditions. Pathogen isolates with low, medium and high virulence represented 8 distinct pathotypes. The virulence of isolates expressed by their published pathotypes conformed poorly to their virulence as observed on the C. melo accessions in this experiment. Collectively, 45 different reaction patterns were recorded. Most C. melo accessions (67) were highly susceptible to all isolates. Two accessions of C. melo subsp. agrestis (PI 614174 and PI 614442) were incompletely resistant to all isolates. The reaction of the remaining 46 accessions was race-specific. None of screened C. melo accessions expressed complete resistance to all isolates. Accession PI 315410 from India was resistant to 5 isolates and incompletely resistant to 2 others. The reduced development of at least one P. cubensis isolate was recorded on leaf discs of 17 accessions. Accessions with incomplete resistance to at least one isolate originated most frequently from India, Zimbabwe and Zambia. The study: a) confirmed the race-specificity of interactions between C. melo and P. cubensis, b) revealed C. melo subsp. agrestis as a taxon with potential field resistance to a number of races P. cubensis, and c) showed that within C. melo populations from India and southern Africa there are accessions completely or incompletely resistant to European races of P. cubensis.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GF - Diseases, pests, weeds and plant protection

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sciencia Horticulturae

ISSN

0304-4238

e-ISSN

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Volume of the periodical

200

Issue of the periodical within the volume

MAR

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

45-54

UT code for WoS article

000373412300007

EID of the result in the Scopus database

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