Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Empty-vector control and transgenic 35S-PaWRKY1 Arabidopsis

ABSTRACT: Transcriptional profiling of genes regulated by PaWRKY1 transcription factor A PaWRKY transcription factor from orchid plants is expressed in Arabidopsis, and the PaWRKY-regulated genes are studied Comparison of empty-vector control and transgenic 35S-PaWRKY1 Arabidopsis Affymetrix GeneChip assay were performed by the Affymetrix Gene Expression Service Lab (http://ipmb.sinica.edu.tw/affy/), supported by Academia Sinica, Taiwan

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Shih-Feng Fu

PROVIDER: E-GEOD-22766 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Characterization of the early response of the orchid, Phalaenopsis amabilis, to Erwinia chrysanthemi infection using expression profiling.

Fu Shih-Feng SF Tsai Tsung-Mu TM Chen Ying-Ru YR Liu Ching-Pei CP Haiso Lin-June LJ Syue Li-Hsin LH Yeh Hsin-Hung HH Huang Hao-Jen HJ

Physiologia plantarum 20120221 3

Erwinia chrysanthemi is a devastating bacterial pathogen in Phalaenopsis amabilis and causes soft-rotting disease by secretion of cell wall-degrading enzymes. However, the molecular mechanisms underlying the interaction of P. amabilis with E. chrysanthemi remain elusive. In this study, early molecular events of the plant in response to the pathogen attack were investigated. The alteration in reactive oxygen species accumulation and peroxidase activity occurred at the site of infection. Subsequen ...[more]

PMID: 22268629

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Project description:Transcriptional profiling of arsenic-induced toxicity and tolerance in Arabidopsis plants of different ecotypes Arsenic (As) is a toxic metalloid found ubiquitously in the environment and has widely been known as an acute poison and carcinogen. As toxicity is a major factor leading to root growth inhibition in plants. However, the molecular mechanisms of plants in response to As has not been extensively characterized. In this study, Arabidopsis ecotypes that are As-tolerant (Col-0) and -sensitive (Ws-2) were used to conduct a transcriptome analysis of the response to As (V). To begin elucidating the molecular basis of As toxicity and tolerance in Arabidopsis, seedlings of Col-0 and Ws-2 were subjected to As treatment. The root elongation rate of Col-0 was significantly higher than that of Ws-2 when exposed to As. The tolerant ecotype (Col-0) demonstrated lower accumulation of As when compared to the responses observed in the sensitive Ws-2. Subsequently, the effect of As exposure on genome-wide gene expression was examined in the two ecotypes. Comparative analysis of microarray data identified groups of genes with common and specific responses to As between Col-0 and Ws-2. The genes related to heat responses and oxidative stresses belonged to common responses, indicating conserved stress-associated changes across two ecotypes. The majority of specific responsive genes were those encoding heat shock proteins, heat shock factors, ubiquitin and transporters. The data suggested that metal transport and maintenance of protein structure may be important mechanisms for toxicity and tolerance to As. This study presents comprehensive surveys of global transcriptional regulation and identifies stress- and tolerance-associated genes in response to As. Comparison of Arabidopsis ecotype Col-0 and Ws-2 in response to As with the Affymetrix GeneChip were performed by the Affymetrix Gene Expression Service Lab (http://ipmb.sinica.edu.tw/affy/), supported by Academia Sinica, Taiwan

Dataset Information

Empty-vector control and transgenic 35S-PaWRKY1 Arabidopsis

Publications

Characterization of the early response of the orchid, Phalaenopsis amabilis, to Erwinia chrysanthemi infection using expression profiling.

Similar Datasets

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