Dataset Information

Metabolomics of Solanum lycopersicum infected by Phytophthora infestans leads to Late blight detection and reveals metabolic differences in infection times

ABSTRACT: Tomato crops suffer attacks of various pathogens that cause large production losses. Late blight caused by Phytophthora infestans is a devastating disease in tomatoes because of its difficultly to control. Here, we applied metabolomics based on liquid chromatography–mass spectrometry (LC-MS) and metabolic profiling by matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) in combination with multivariate data analysis in the early detection of late blight on asymptomatic tomato plants and to discriminate infection times of 4, 12, 24, 36, 48, 60, 72 and 96 h after inoculation (hpi). MALDI-MS and LC-MS profiles of metabolites combined with multivariate data analysis are able to detect early-late blight-infected tomato plants, and metabolomics based on LC-MS discriminates infection times in asymptomatic plants. We found the metabolite tomatidine as an important biomarker of infection, saponins as early infection metabolite markers and isocoumarin as early and late asymptomatic infection marker along the post infection time. MALDI-MS and LC-MS analysis can therefore be used as a rapid and effective method for the early detection of late blight-infected tomato plants, offering a suitable tool to guide the correct management and application of sanitary defense approaches. LC-MS analysis also appears to be a suitable tool for identifying major metabolites of asymptomatic late blight-infected tomato plants.

INSTRUMENT(S): 6550 Q-TOF LC-MS Agilent

SUBMITTER: Paula Liliana Galeano

PROVIDER: MTBLS618 | MetaboLights | 2019-01-24

REPOSITORIES: MetaboLights

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Publications

Metabolomics of Solanum lycopersicum Infected with Phytophthora infestans Leads to Early Detection of Late Blight in Asymptomatic Plants.

Galeano Garcia Paula P Neves Dos Santos Fábio F Zanotta Samantha S Eberlin Marcos Nogueira MN Carazzone Chiara C

Molecules (Basel, Switzerland) 20181215 12

Tomato crops suffer attacks of various pathogens that cause large production losses. Late blight caused by Phytophthora infestans is a devastating disease in tomatoes because of its difficultly to control. Here, we applied metabolomics based on liquid chromatography⁻mass spectrometry (LC-MS) and metabolic profiling by matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) in combination with multivariate data analysis in the early detection of late blight on asymptomatic ...[more]

PMID: 30558273

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Project description:A comparative study ware made to know the Early Blight resistance mechanism between resistant and susceptible plants at vegetative stage. Transcriptional changes during compatible and resistant reaction between A. solani and tomato genotypes have been identified using Affymetrix tomato gene chips. Results were confirmed by reverse transcription-polymerase chain reaction with the samples collected after 24hrs of inoculation from inoculated and control susceptible and resistant genotypes. The number of up and down regulated genes in three different combinations of treatments i.e. Early Blight Resistant Treated and Control (EBTT and EBTC) and Early Blight Suceptible Treated and Control (EBST and EBSC) has observed and compared. In EBST vs. EBSC condition, 3478 genes are up regulated and 2663 are down regulated. Similarly when analysis is done between EBST and EBRT, 2475 genes are up regulated and 3662 are down regulated. Total 3442 genes are up regulated and 2695 genes are found to be down regulated in resistant line of tomato for early blight when the analysis is done for EBRT Vs. EBRC. These genes, that are induced in the resistant genotype EC-520061(Solanum habrochaites , wild) of tomato, after Alternaria solani infection, have been classified in to following categories, response to stress, cellular component, Metabolic activity, regulation of transcription, regulation of translation, and few were unknown. Data from this study are a resource for understanding the mechanism, which works for resistance against pathogen of early blight in tomato, which is critical and will be useful in improving this trait through transgenic approach or gene silencing. Tomato plants were exposed to A. solani spores and after 24 hrs (at the stage of penetration of tissues with fungal hyphae) samples were collected from both susceptible and resistant genotypes for RNA extraction and hybridization on Affymetrix chips. To study the molecular mechanism of biotic stress resistance, transcripts of both the genotypes were compared in response to A. solani.

Dataset Information

Metabolomics of Solanum lycopersicum infected by Phytophthora infestans leads to Late blight detection and reveals metabolic differences in infection times

Publications

Metabolomics of <i>Solanum lycopersicum</i> Infected with <i>Phytophthora infestans</i> Leads to Early Detection of Late Blight in Asymptomatic Plants.

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