Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from Arabidopsis rosette leaves


ABSTRACT: The focus of this study was to identify changes in host gene expression induced by the transcription-dependent function of the viral AC2 protein, and induced by the interaction of AC2/C2 with SnRK1.2 (AtAKIN11). We used microarrays to identify changes in host gene expression induced by the transcription-dependent function of the geminivirus-encoded AC2 protein, and induced by the interaction of AC2 with a host serine-threonine kinase, SnRK1. Distinct classes of genes were up- and down regulated during this process. For experiment 1, Arabidopsis rosette leaves were infused with Agrobacterium capable of expressing full-length Cabbage leaf curl virus (CaLCuV) AC2 protein, a truncated version of AC2 lacking the C-terminal 29 amino acids (AC2del), or an empty vector control (530). In experiment 2, Arabidopsis rosette leaves were infused with Agrobacterium capable of expressing full-length Spinach curly top virus C2 protein, a truncated version of C2 lacking the C-terminal 29 amino acids (C2del), antisense (as) SnRK1.2 (AsAKIN11), or an empty vector control (530). Infused Arabidopsis rosette leaves were selected at 1, 2 or 3 days post-infusion for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain homogeneous populations of plants at each time point in order to increase the temporal resolution of expression profiles. To that end, we isolated total RNA from four individual plants, for three independent sets of plants infused with the different constructs. This resulted in three independent samples per treatment per time point.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Garry Sunter 

PROVIDER: E-GEOD-62180 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Altered expression of Arabidopsis genes in response to a multifunctional geminivirus pathogenicity protein.

Liu Lu L   Chung Ho Yong HY   Lacatus Gabriela G   Baliji Surendranath S   Ruan Jianhua J   Sunter Garry G  

BMC plant biology 20141118


<h4>Background</h4>Geminivirus AC2 is a multifunctional protein that acts as a pathogenicity factor. Transcriptional regulation by AC2 appears to be mediated through interaction with a plant specific DNA binding protein, PEAPOD2 (PPD2), that specifically binds to sequences known to mediate activation of the CP promoter of Cabbage leaf curl virus (CaLCuV) and Tomato golden mosaic virus (TGMV). Suppression of both basal and innate immune responses by AC2 in plants is mediated through inactivation  ...[more]

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