Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Pycnoporus coccineus interaction analysis

ABSTRACT: The fungus Pycnoporus coccineus was grown either alone or in presence of another fungus (here: Coniophora puteana or Botrytis cinerea) in order to study the fungal interspecific interaction mechanisms.

ORGANISM(S): Pycnoporus coccineus

SUBMITTER: Yonathan Arfi

PROVIDER: E-MTAB-1330 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Differential gene expression in Pycnoporus coccineus during interspecific mycelial interactions with different competitors.

Arfi Yonathan Y Levasseur Anthony A Record Eric E

Applied and environmental microbiology 20130823 21

Fungi compete against each other for environmental resources. These interspecific combative interactions encompass a wide range of mechanisms. In this study, we highlight the ability of the white-rot fungus Pycnoporus coccineus to quickly overgrow or replace a wide range of competitor fungi, including the gray-mold fungus Botrytis cinerea and the brown-rot fungus Coniophora puteana. To gain a better understanding of the mechanisms deployed by P. coccineus to compete against other fungi and to as ...[more]

PMID: 23974131

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Project description:Transcriptomic analysis in response to Botrytis cinerea infections under conrasting nitrate regime Nitrogen (N) is one of the main limiting nutrients for plant growth and crop yield. It is well documented that changes in nitrate availability, the main N source found in agricultural soils, influences a myriad of developmental programs and processes including the plant defense response. Indeed, many agronomical reports indicate that the plant N nutritional status influences their ability to respond effectively when challenged by different pathogens. However, the molecular mechanisms involved in N-modulation of plant susceptibility to pathogens are poorly characterized. In this work, we show that Solanum lycopersicum defense response to the necrotrophic fungus Botrytis cinerea is affected by plant N availability, with higher susceptibility in nitrate-limiting conditions. Global gene expression responses of tomato against B. cinerea under contrasting nitrate conditions reveals that plant primary metabolism is affected by the fungal infection regardless of N regimes. This result suggests that differential susceptibility to pathogen attack under contrasting N conditions is not only explained by a metabolic alteration. We used a systems biology approach to identify the transcriptional regulatory network implicated in plant response to the fungus infection under contrasting nitrate conditions. Interestingly, hub genes in this network are known key transcription factors involved in ethylene and jasmonic acid signaling. This result positions these hormones as key integrators of nitrate and defense against B. cinerea in tomato plants. Our results provide insights into potential crosstalk mechanisms between necrotrophic defense response and N status in plants. To better understand the molecular changes underlying the impact of nitrate availability on plant susceptibility to B. cinerea, we performed plant transcriptome profiling assays on mock-treated (3 biological replicates) and infected plants ( 3 biological replicates) grown under three N conditions, using GeneChip Tomato Genome Arrays (Affymetrix).

Dataset Information

Pycnoporus coccineus interaction analysis

Publications

Differential gene expression in Pycnoporus coccineus during interspecific mycelial interactions with different competitors.

Similar Datasets

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