Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcriptional changes of phytoplasma under host switching between plant and insect

ABSTRACT: This SuperSeries is composed of the following subset Series: GSE29274: phytoplasma in plants vs. phytoplasma in insects (single hyb expts) GSE30302: phytoplasma in plants vs. phytoplasma in insects (co-hybridizations) Refer to individual Series

ORGANISM(S): Candidatus Phytoplasma asteris

SUBMITTER: Kenro Oshima

PROVIDER: E-GEOD-30804 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Dramatic transcriptional changes in an intracellular parasite enable host switching between plant and insect.

Oshima Kenro K Ishii Yoshiko Y Kakizawa Shigeyuki S Sugawara Kyoko K Neriya Yutaro Y Himeno Misako M Minato Nami N Miura Chihiro C Shiraishi Takuya T Yamaji Yasuyuki Y Namba Shigetou S

PloS one 20110816 8

Phytoplasmas are bacterial plant pathogens that have devastating effects on the yields of crops and plants worldwide. They are intracellular parasites of both plants and insects, and are spread among plants by insects. How phytoplasmas can adapt to two diverse environments is of considerable interest; however, the mechanisms enabling the "host switching" between plant and insect hosts are poorly understood. Here, we report that phytoplasmas dramatically alter their gene expression in response to ...[more]

PMID: 21858041

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Project description:Carbon dioxide (CO2) sensing, transport, and metabolism play a pivotal role in survival and proliferation of pathogenic microbes infecting human host from natural environments due to the drastic difference of CO2 levels. Carbonic anhydrases (CAs) are not only key CO2-metabolic enzymes catalyzing reversible interconversion between CO2 and bicarbonate (HCO3-), but also important CO2-signaling modulators. Cryptococcus neoformans that causes fatal fungal meningitis contains two functional CAs, Can1 and Can2, among which Can2 plays essential roles for growth and sexual differentiation of the pathogen. However, downstream genes and signaling network regulated by CAs have not been studied thus far. In this study, we constructed a C. neoformans strain where CAN2 expression is controlled by the CTR4 (copper transporter) promoter and elucidated its transcriptome patterns by using DNA microarray analysis to elucidate downstream target genes of Can2. Expectedly, the CAN2 promoter replacement strain showed growth defects in a CO2-dependent manner when CAN2 is repressed. The CA-transcriptome analysis discovered a number of Can2-dependent genes, including those involved in fatty acid biosynthesis (FAS1), sexual differentiation (GPB1), capsule structure organization (CAS3), iron-metabolism (CFO2), and a number of stress-regulated genes, including an oxidative stress-responsive Atf1 transcription factor, although a majority of them do not have any orthologs in other fungi. The present study revealed other roles of Atf1 in capsule and melanin production and diverse stress responses, including thermotolerance and antifungal drug resistance, of C. neoformans. This study provides further insights into the signaling network of CA/CO2-sensing pathway in pathogenic fungi. 17 slides are used in this analysis, 3 or 2 biological replicate experiments are performed, total RNAs are extracted from 2 strains (H99 Wild type strain, CTR4::CAN2) at 2 time points (0hr time, 12hr time) in 2 conditions (BCS, CuSO4). We use the mixed all of total RNAs from this experiment as a control RNA. We use Cy5 as Sample dye and Cy3 as a control dye. Several experiment samples are dye swaped.

Dataset Information

Transcriptional changes of phytoplasma under host switching between plant and insect

Publications

Dramatic transcriptional changes in an intracellular parasite enable host switching between plant and insect.

Similar Datasets

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