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RNA profiling of Fusarium head blight-resistant wheat addition lines containing the Thinopyrum elongatum chromosome 7E

ABSTRACT: Fusarium head blight (FHB) is a major disease of cereal crops caused by the fungus Fusarium graminearum (Fg). FHB affecting the flowering heads (or spikes). A FHB resistance locus has been identified on the chromosome 7E of the wild wheat relative Thinopyrum elongatum (Th.e.). That chromosome (7E) or a long arm fragment of it (7EL) have been transferred as additions in the wheat background 'Chinese Spring' (CS). The two addition lines are resistant to FHB while 'Chinese Spring' is moderately susceptible to it. The mechanism of resistance is not known. The analysis of this work is published in the Canadian Journal of Plant Pathology (Wang et al, 2010). We used the wheat microarray to determine the global expression profil in inoculated spikelets of the addition and parental lines, after water or Fg treatment, with samplings at 2 and 4 days after inoculation (DAI).

ORGANISM(S): Triticum aestivum

SUBMITTER: ThÃ©rÃ¨se Ouellet

PROVIDER: E-GEOD-21386 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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RNA profiling of Fusarium head blight-resistant wheat addition lines containing the Thinopyrum elongatum chromosome 7E

Project description:Fusarium head blight (FHB) is a major disease of cereal crops caused by the fungus Fusarium graminearum (Fg). FHB affecting the flowering heads (or spikes). A FHB resistance locus has been identified on the chromosome 7E of the wild wheat relative Thinopyrum elongatum (Th.e.). That chromosome (7E) or a long arm fragment of it (7EL) have been transferred as additions in the wheat background 'Chinese Spring' (CS). The two addition lines are resistant to FHB while 'Chinese Spring' is moderately susceptible to it. The mechanism of resistance is not known. The analysis of this work is published in the Canadian Journal of Plant Pathology (Wang et al, 2010).

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Project description:Fusarium head blight (FHB) is a major disease of cereal crops caused by the fungus Fusarium graminearum (Fg). FHB affects the flowering heads (or spikes). This study compare the gene expression profile in wheat spikelets from near isogenic spring wheat lines carrying or not the FHB resistance QTL 2DL, after inoculation with water (H2O) or Fg; two inoculation methods were also compared, point and spray inoculation.

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Project description:Near isogenic wheat lines(NILs), differing in the presence of both or none of the FHB-resistance QTL Fhb1 and Qfhs.ifa-5A, have been sequenced using Illumina HiSeq2000 under disease pressure (3, 6, 12, 24, 36, 48 hai) as well as with mock-inoculation, to discern transcriptional differences induced by Fusarium graminearum. The NILs are BC5F2 lines generated from the Mexican Spring wheat line CM-82036, the resistance QTL donor line, as recurrent background and the susceptible German Spring wheat line Remus as the donor of the susceptible QTL alleles.

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Expression profiling of wheat heads from spring wheat Chinese Spring (CS) and CS-7EL (CS with additional chromosome arm 7EL from Thinopyrum elongatum), after inoculation with either water (mock inoculation) or Fusarium graminearum

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