Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 409643
Title Mechanisms governing the responses to anthracnose pathogen in Juglans spp.
Author(s) Pollegioni, P.; Linden, C.G. van der; Belisario, A.; Gras, M.; Anselmi, N.
Source Journal of Biotechnology 159 (2012)4. - ISSN 0168-1656 - p. 251 - 264.
DOI https://doi.org/10.1016/j.jbiotec.2011.08.020
Department(s) WUR Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) disease resistance genes - quantitative trait loci - black-walnut - population-genetics - medicago-truncatula - powdery mildew - bud burst - regia l. - binding - identification
Abstract Juglans nigra and Juglans regia are two highly economically important species for wood and fruit production that are susceptible to anthracnose caused by Gnomonia leptostyla. The identification of genotypes resistant to anthracnose could represent a valid alternative to agronomic and chemical management. In this study, we analyzed 72 walnut genotypes that showed a variety of resistance phenotypes in response to natural infection. According to the disease severity rating and microsatellite fingerprinting analysis, these genotypes were divided into three main groups: (40) J. nigra resistant, (1) J. nigra susceptible, and (31) J. regia susceptible. Data on leaf emergence rates and analysis of in vivo pathogenicity indicated that the incidence of anthracnose disease in the field might be partially conditioned by two key factors: the age and/or availability of susceptible leaves during the primary infection of fungus (avoidance by late flushing) and partial host resistance. NBS profiling approach, based on PCR amplification with an adapter primer for an adapter matching a restriction enzyme site and a degenerate primer targeting the conserved motifs present in the NBS domain of NBS-LRR genes, was applied. The results revealed the presence of a candidate marker that correlated to a reduction in anthracnose incidence in 72 walnut genotypes
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