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 414498
Title Multi-gene analysis and morphology reveal novel Ilyonectria species associated with black foot disease of grapevines
Author(s) Cabral, A.; Rego, C.; Nascimento, T.; Oliveira, H.; Groenewald, J.Z.; Crous, P.W.
Source Fungal Biology 116 (2012)1. - ISSN 1878-6146 - p. 62 - 80.
DOI https://doi.org/10.1016/j.funbio.2011.09.010
Department(s) Laboratory of Phytopathology
EPS-4
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) cylindrocarpon-liriodendri - 1st report - pauciseptatum - macrodidymum - recognition - neonectria - hypocreales - nectriaceae - anamorphs - fusarium
Abstract Black foot is an important disease of grapevines, which has in recent years been recorded with increased incidence and severity throughout the world, affecting grapevines both in nurseries and young vineyards. In the past the disease has been associated with infections by Ilyonectria macrodidyma, Ilyonectrialiriodendri, Campylocarpon fasciculare, and Campylocarponpseudofasciculare. Based on published data, a high level of genetic diversity was detected among isolates of I. macrodidyma. To resolve this issue, we employed a multigene analysis strategy (based on the ß-tubulin, histone H3, translation elongation factor 1-a, and the internal transcribed spacers on both sides of the 5.8S nuclear ribosomal RNA gene) along with morphological characterisation to study a collection of 81 I. macrodidyma-like isolates from grapevine and other hosts. Morphological characters (particularly conidial size) and molecular data (highest resolution achieved with histone H3 nucleotide sequence) enabled the distinction of six monophyletic species within the I. macrodidyma complex, four of which (Ilyonectriaalcacerensis, Ilyonectriaestremocensis, Ilyonectrianovozelandica, and Ilyonectriatorresensis) are described here. This work forms part of an effort by the International Council on Grapevine Trunk Diseases to resolve the species associated with black foot disease, which we believe will clarify their taxonomy, and therefore help researchers to devise control strategies to reduce the devastating impact of this disease.
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