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- Title
Host status and reaction of Arabidopsis thaliana ecotypes to infection by the northern root-knot nematode (Meloidogyne hapla).
- Authors
Boiteux, L. S.; Fonseca, M. E. N.; Simon, P. W.
- Abstract
A phenotypically and geographically diverse collection of 45 Arabidopsis thaliana ecotypes was evaluated for its reaction to the northern root-knot nematode (Meloidogyne hapla) under greenhouse conditions. A significant ecotype effect was observed for both criteria used for host reaction assessment: namely, root-gall rating (RGR) and nematode reproductive index (RI). A non-host (non-galling) response was not detected in this germplasm collection. The majority of the ecotypes showed high degrees of RGR and RI. However, some medium-late maturing ecotypes such as ‘CS-1540’ and ‘CS-6028’ (both collected in the UK) displayed high RGR but in association with very reduced RI. The confirmation of A. thaliana as an experimental host of M. hapla and the identification of differential levels of response to infection by this endoparasitic nematode provides the opportunity for genetic and molecular characterization of a new set of plant genes expressed during plant–nematode interaction. A. thaliana is the smallest and the best characterized genome among plant species, which may facilitate gene isolation and cloning. This may hasten transgenic transfer to economically important host plants of the genetic factors controlling low RI levels identified in some A. thaliana ecotypes.
- Subjects
ARABIDOPSIS thaliana; NORTHERN root-knot nematode; DISEASE resistance of plants
- Publication
Plant Breeding, 1999, Vol 118, Issue 4, p355
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1046/j.1439-0523.1999.00384.x