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The beet cyst nematode Heterodera schachtii modulates the expression of WRKY transcription factors in syncytia to favour its development in a Arabidopsis roots

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Ali, Muhammad Amjad, Wieczorek, Krzysztof, Kreil, David and Bohlmann, Holger (2014) The beet cyst nematode Heterodera schachtii modulates the expression of WRKY transcription factors in syncytia to favour its development in a Arabidopsis roots. PLoS One, Volume 9 (Number 7). Article number e102360. doi:10.1371/journal.pone.0102360

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Official URL: http://dx.doi.org/10.1371/journal.pone.0102360

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Abstract

Cyst nematodes invade the roots of their host plants as second stage juveniles and induce a syncytium which is the only source of nutrients throughout their life. A recent transcriptome analysis of syncytia induced by the beet cyst nematode Heterodera schachtii in Arabidopsis roots has shown that thousands of genes are up-regulated or down-regulated in syncytia as compared to root segments from uninfected plants. Among the down-regulated genes are many which code for WRKY transcription factors. Arabidopsis contains 66 WRKY genes with 59 represented by the ATH1 GeneChip. Of these, 28 were significantly down-regulated and 6 up-regulated in syncytia as compared to control root segments. We have studied here the down-regulated genes WRKY6, WRKY11, WRKY17 and WRKY33 in detail. We confirmed the down-regulation in syncytia with promoter::GUS lines. Using various overexpression lines and mutants it was shown that the down-regulation of these WRKY genes is important for nematode development, probably through interfering with plant defense reactions. In case of WRKY33, this might involve the production of the phytoalexin camalexin.

Item Type: Journal Article
Subjects: Q Science > QK Botany
Q Science > QL Zoology
Divisions: Faculty of Science > Life Sciences (2010- )
Library of Congress Subject Headings (LCSH): Sugar beet cyst nematode, Transcription factors, Arabidopsis -- Genetics
Journal or Publication Title: PLoS One
Publisher: Public Library of Science
ISSN: 1932-6203
Official Date: 17 July 2014
Dates:
DateEvent
17 July 2014Published
18 June 2014Accepted
12 March 2014Submitted
Volume: Volume 9
Number: Number 7
Article Number: Article number e102360
DOI: 10.1371/journal.pone.0102360
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Fonds zur Förderung der Wissenschaftlichen Forschung (Austria) (FWF)
Grant number: P20471-B11 (FWF)
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