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Resistant response of leaves of upland cotton line Im216 to Xanthomonas campestris pv. malvacearum race 1

ABSTRACT: Gene expression profiling of upland cotton line Im216 to inoculation with Xanthomonas campestris pv. malvacearum race 1. Fifth or sixth leaves of the bacterial blight-resistant cotton line Im216, which had been grown in a plant growth chamber, were infiltrated with a suspension of about 5x10^6 colony-forming units ml^-1 of Xanthomonas campestris pv. malvacearum race 1 in sterile saturated CaCO3 solution or were not inoculated (control). Keywords: Time-course

ORGANISM(S): Gossypium hirsutum

PROVIDER: GSE2851 | GEO | 2006/01/01

SECONDARY ACCESSION(S): PRJNA91909

REPOSITORIES: GEO

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Resistant response of leaves of upland cotton line Im216 to Xanthomonas campestris pv. malvacearum race 1

Project description:Gene expression profiling of upland cotton line Im216 to inoculation with Xanthomonas campestris pv. malvacearum race 1. Fifth or sixth leaves of the bacterial blight-resistant cotton line Im216, which had been grown in a plant growth chamber, were infiltrated with a suspension of about 5x10^6 colony-forming units ml^-1 of Xanthomonas campestris pv. malvacearum race 1 in sterile saturated CaCO3 solution or were not inoculated (control). Keywords: Time-course Samples consisting of one leaf were harvested at 8, 14, 20, 30, 45, and 60 hpi. Three biological replicate experiments were performed on separate occasions. Total RNA was isolated, and from each sample 50 Âµg was reverse-transcribed along with non-plant normalizing Sp4 RNA (0.5 ng) and Sp5 RNA (0.05 ng), hybridized to slides for approximately 18 h, and detected with Cy5 (inoculated) or with Cy3 (non-inoculated) labeled dendrimers (hybridization for 3 h), using the 3DNA Array 350TM kit (Genisphere). Hybridization signals were measured using a ScanArray Express (PerkinElmer), and images were processed with GenePix Pro version 4.0 (Axon Instruments). Normalized log ratio VALUES were determined using the R-project statistical environment (<http://www.r-project.org/>), Bioconductor (<http://www.bioconductor.org/>) and the LIMMA package (Smyth 2004) through the GenePix AutoProcessor (GPAP, http://darwin.biochem.okstate.edu/gpap/>) website (H. Weng and P. Ayoubi, unpublished).

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Project description:Black rot, caused by Xanthomonas campestris pv. campestris (Xcc) is one of the most devastating diseases of cruciferous crops worldwide. The pathogen infects and multiplies in plant vascular tissues and, as the disease progresses, the veins of infected tissues turn black and characteristic V-shaped lesions appear along the margins of leaves.The aim of this work is to identify differentially expressed genes from Brassica oleracea during early infection by Xcc, in an attempt to identify proteins related to resistance. Cabbge seedlings were inoculated with Xanthomonas campestris pv campestris (Xcc) suspension and cabbage gene expression at 6h., 24h. And 48h. After inoculation was assessed with help of Brassica 95k EST microarray chip.

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Brassica nigra challenged by Pieris brassicae, eggs of Pieris brassicae, Xanthomonas campestris pv. raphani, Brevicoryne brassicae or by combined stresses eggs of P. brassicae / P. brassicae, X. campestris / P. brassicae, B. brassicae / P. brassicae

Project description:Brassica nigra plants, a Brassicaceae close to Arabidopsis thaliana, was used for combined stresses experiments. In this study, we performed a whole-genome microarray analysis on five-week-old plants and compared untreated plants and plants treated different single or dual stresses: the larvae Pieris brassicae, egg extract of Pieris brassicae, the bacterial Xanthomonas campestris pv. raphani, the aphid Brevicoryne brassicae or by combined stresses eggs of P. brassicae / P. brassicae, X. campestris / P. brassicae, B. brassicae / P. brassicae.

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