The Plant Journal (2012) 72, 185-198

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Janice de Almeida Engler, Tina Kyndt, Paulo Vieira, Elke Van Cappelle, Veronique Boudolf, Vanesa Sanchez, Carolina Escobar, Lieven De Veylder, Gilbert Engler, Pierre Abad and Godelieve Gheysen (2012)
CCS52 and DEL1 genes are key components of the endocycle in nematode-induced feeding sites
The Plant Journal 72 (2), 185-198
Abstract: The establishment of galls and syncytia as feeding sites induced by root-knot and cyst nematodes, respectively, involves a progressive increase in nuclear and cellular size. Here we describe the functional characterization of endocycle activators CCS52A, CCS52B and a repressor of the endocycle, DEL1, during two types of nematode feeding site development in Arabidopsis thaliana. In situ hybridization analysis showed that expression of CCS52A1 and CCS52B was strongly induced in galls and syncytia and DEL1 was stably but weakly expressed throughout feeding site development. Down-regulation and over-expression of CCS52 and DEL1 in Arabidopsis drastically affected giant cell and syncytium growth, resulting in restrained nematode development, illustrating the need for mitotic activity and endo-reduplication for feeding site maturation. Exploiting the mechanism of endo-reduplication may be envisaged as a strategy to control plant-parasitic nematodes.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
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Database assignments for author(s): Godelieve Gheysen, Janice de Almeida Engler, Carolina Escobar, Paulo Vieira

Research topic(s) for pests/diseases/weeds:
molecular biology - genes


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Plant parasitic nematodes