Article (Scientific journals)
Poplar-root-knot nematode interaction: a model for perennial woody species
Baldacci-Cresp, Fabien; Sacre, Pierre-Yves; Twyffels, Laure et al.
2016In Molecular Plant-Microbe Interactions, 29 (7), p. 560-572
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Keywords :
Root-knot nematode; Meloidogyne incognita; Poplar; Populus tremula x P. alba
Abstract :
[en] Plant root-knot nematode interaction studies are performed on several host plant models. However, even though root-knot nematodes interact with trees, no perennial woody model has been explored so far. We show here that poplar (Populus tremula x Populus alba) grown in vitro is susceptible to Meloidogyne incognita as this nematode is able to penetrate, to induce feeding sites and to reproduce in poplar roots. As analyzed by Raman spectromicroscopy, the cell walls of the giant cells, with typical characteristics of transfer cell walls, were not lignified and were composed mainly of pectin and cellulose. To better depict the poplar-nematode interaction at the molecular level, a quantitative RT-PCR analysis was performed to study changes in poplar gene expression in galls compared to non-infected roots. Three marker genes, reported for other plant hosts, including expansin A, histone 3.1 and asparagine synthase, were conserved for poplar-nematode interaction. In addition, the down-regulation of four genes coding for enzymes of the lignin biosynthesis pathway was evidenced in galls, suggesting a modification in lignin composition within galls developed in poplar roots. Together, this study shows that poplar is a suitable model host for specific traits of tree-nematode interaction.
Research center :
Centre Interfacultaire de Recherche du Médicament - CIRM
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Baldacci-Cresp, Fabien
Sacre, Pierre-Yves  ;  Université de Liège > Département de pharmacie > Chimie analytique
Twyffels, Laure
Mol, Adeline
Vermeersch, Marjorie
Ziemons, Eric  ;  Université de Liège > Département de pharmacie > Département de pharmacie
Hubert, Philippe  ;  Université de Liège > Département de pharmacie > Chimie analytique
Pérez-Morga, David
El Jarizi, Mondher
de Almeida-Engler, Janice
Baucher, Marie
Language :
English
Title :
Poplar-root-knot nematode interaction: a model for perennial woody species
Publication date :
2016
Journal title :
Molecular Plant-Microbe Interactions
ISSN :
0894-0282
eISSN :
1943-7706
Publisher :
American Phytopathological Society, St Paul, United States - Minnesota
Volume :
29
Issue :
7
Pages :
560-572
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 April 2016

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