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 416215
Title Differential expression of TIR-like genes embedded in the M1-1 gene cluster in nematode-resistant and -susceptible tomato roots
Author(s) Seifi Abdolabad, A.R.; Visser, R.G.F.; Bai, Y.
Source Journal of plant pathology - Formerly Rivista di patologia vegetale 93 (2011)3. - ISSN 1125-4653 - p. 701 - 706.
Department(s) Laboratory of Plant Breeding
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) box protein tir1 - auxin receptor - complex - plants
Abstract Transport inhibitor 1 (TIR1) is an auxin receptor that plays a pivotal role in auxin signaling. It has been reported that TIR-like genes are present in a gene cluster carrying the Mi-1 gene which confers resistance to nematodes, aphids and whiteflies. Since auxin is involved in the pathogenicity of tumor-inducing pathogens like nematodes, the co-localization of TIR-like genes with the Mi-1 gene may imply a role for TIR-like genes in the resistance conferred by the Mi-1 gene. In this study, we monitored the TIR-like transcript abundance (TTA) in both roots and leaves of nematode-resistant and –susceptible tomato lines. Our results demonstrate that TTA in roots, but not in leaves, was lower in nematode-resistant tomatoes than that in nematode-susceptible ones. In order to test whether the TIR-like genes are involved in nematode resistance mediated by the Mi-1 gene, we transiently silenced the Mi-1 gene homologues in a nematode-resistant tomato line and then measured TTA. Results showed that knocking down the expression of the Mi-1 gene homologues had no effect on TTA, therefore, we concluded that involvement of TIR-like genes in the response of tomato roots to nematodes is probably independent of the Mi-1 gene homologues. Further, we propose a possible explanation for the association between TTA and resistance to root-knot nematodes in tomato
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