Dataset Information

Saprolegnia parasitica proteome

ABSTRACT: In this project, we made a comprehensive quantitative proteomic analysis of four defined developmental stages of S. parasitica (mycelium, primary cysts, secondary cysts and germinated cysts) to gain greater insight into the types of proteins specifically linked to each stage. A total of 2423 unique proteins were identified using qualitative (gel-based) and quantitative (iTRAQ, isobaric tags for relative and absolute quantitation) approaches. Of these, 358 proteins, associated with various biological processes, were found to be significantly enriched between different life cycle stages of S. parasitica. The transcript abundance of several cyst and mycelium enriched proteins was also checked by quantitative real-time PCR. This is the first large scale proteomic analysis on Saprolegnia and the data from this study will enhance our current knowledge about this pathogen by identifying biological processes key to each developmental stage.

INSTRUMENT(S): Xevo Q-Tof

ORGANISM(S): Oomycetes

TISSUE(S): Cyst

SUBMITTER: Vaibhav Srivastava

LAB HEAD: Vincent Bulone / Vaibhav Srivastava

PROVIDER: PXD004695 | Pride | 2018-08-10

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	2014LanaGerminatingCystBands.mgf	Mgf
	2014LanaITRAQBR1100mMa.mgf	Mgf
	2014LanaITRAQBR1100mMb.mgf	Mgf
	2014LanaITRAQBR1125mMa.mgf	Mgf
	2014LanaITRAQBR1125mMb.mgf	Mgf

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Publications

Quantitative Proteomic Analysis of Four Developmental Stages of Saprolegnia parasitica.

Srivastava Vaibhav V Rezinciuc Svetlana S Bulone Vincent V

Frontiers in microbiology 20180111

Several water mold species from the Saprolegnia genus infect fish, amphibians, and crustaceans in natural ecosystems and aquaculture farms. Saprolegnia parasitica is one of the most severe fish pathogens. It is responsible for millions of dollars of losses to the aquaculture industry worldwide. Here, we have performed a proteomic analysis, using gel-based and solution (iTRAQ) approaches, of four defined developmental stages of S. parasitica grown in vitro, i.e., the m ...[more]

PMID: 29375523

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Project description:Oomycetes from the genus Phytophthora are fungus-like plant pathogens that are devastating for agriculture and natural ecosystems. Due to particular physiological characteristics, no treatments against diseases caused by oomycetes are presently available. To develop such treatments, it appears essential to dissect the molecular mechanisms that determine the interaction between Phytophthora species and host plants. The present project is focused on the molecular mechanisms that underlie the compatible plant-oomycete interaction and plant disease.The laboratory developed a novel interaction system involving the model plant, Arabidopsis thaliana and Phytophthora parasitica, a soil-borne pathogen infecting a wide host range, thus representing the majority of Phytophthora species. A characteristic feature of the compatible Arabidopsis/Phytophthora parasitica interaction is an extended biotrophic phase, before infection becomes necrotrophic. Because the initial biotrophic phase is extremely short on natural (e.g. solanaceous) hosts, the Arabidopsis system provides the opportunity to analyze, for both interaction partners, the molecular events that determine the initiation of infection and the switch to necrotrophy.The present project aims at analyzing the compatible interaction between A. thaliana roots and Phytophthora parasitica. The Affymetrix A. thaliana full genome chip will be used to characterize modulations of the transcriptome occurring over a period of 24h from the onset of plant root infection to the beginning of necrotrophy. Parallel to this study, a custom designed Phytophthora parasitica biochip will enable analyzing of Phytophthora parasitica gene expression during the same stages. The pathosystem involving A. thaliana and Phytophthora parasitica was described in Attard A, Gourgues M, Callemeyn-Torre N, Keller H. 2010. The New phytologist 187: 449–460. The protocol for recovery of RNA from purified appressoria was described in Kebdani N, Pieuchot L, Deleury E, Panabieres F, Le Berre JY, Gourgues M. 2010. New Phytol 185: 248–257. A series of 14 hybridizations corresponding to two biological replicates each corresponding to RNA extractions of the following biological conditions were used: 1-Vegetative mycelium (recovered from two samples of 4 day-old cultures in liquid V8 medium at 24°C), 2- Motile zoospores (recovered from 8 independent cultures), 3-Appressoria differentiated on onion epidermis (epidermis from 20 onion bulbs inoculated with zoospores collected from 8 independent Petri dishes); appressoria collected 3 hours after inoculation (24 °C), 5- Infection of A. thaliana roots by Phytophthora parasitica zoospores (samples recovered at 2.5, 6, 10.5 and 30 hours post inoculation; 5 inoculated plants for each sample).

Dataset Information

Saprolegnia parasitica proteome

Dataset's files

Publications

Quantitative Proteomic Analysis of Four Developmental Stages of <i>Saprolegnia parasitica</i>.

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