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Below-Ground Attack by the Root Knot Nematode Meloidogyne graminicola Predisposes Rice to Blast Disease

Below-Ground Attack by the Root Knot Nematode Meloidogyne graminicola Predisposes Rice to Blast Disease

Authors :
Tina Kyndt
Henok Yimer Zemene
Ashley Haeck
Richard Singh
David De Vleesschauwer
Simon Denil
Tim De Meyer
Monica Höfte
Kristof Demeestere
Godelieve Gheysen
Source :
Molecular Plant-Microbe Interactions, Vol 30, Iss 3, Pp 255-266 (2017)
Publication Year :
2017
Publisher :
The American Phytopathological Society, 2017.

Abstract

Magnaporthe oryzae (rice blast) and the root-knot nematode Meloidogyne graminicola are causing two of the most important pathogenic diseases jeopardizing rice production. Here, we show that root-knot nematode infestation on rice roots leads to important above-ground changes in plant immunity gene expression, which is correlated with significantly enhanced susceptibility to blast disease. A detailed metabolic analysis of oxidative stress responses and hormonal balances demonstrates that the above-ground tissues have a disturbed oxidative stress level, with accumulation of H2O2, as well as hormonal disturbances. Moreover, double infection experiments on an oxidative stress mutant and an auxin-deficient rice line indicate that the accumulation of auxin in the above-ground tissue is at least partly responsible for the blast-promoting effect of root-knot nematode infection.

Subjects

Subjects :
Microbiology
QR1-502
Botany
QK1-989

Details

Language :
English
ISSN :
19437706 and 08940282
Volume :
30
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Molecular Plant-Microbe Interactions
Publication Type :
Academic Journal
Accession number :
edsdoj.909d063ca50840a69ad26d89911f216f
Document Type :
article
Full Text :
https://doi.org/10.1094/MPMI-11-16-0225-R