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Record W3168911526 · doi:10.22215/etd/2015-11166

Identification and characterization of a NADPH oxidase target in Fusarium graminearum

2015· dissertation· en· W3168911526 on OpenAlexaff
Salima Chatur

Bibliographic record

Venuenot available
Typedissertation
Languageen
FieldAgricultural and Biological Sciences
TopicMycotoxins in Agriculture and Food
Canadian institutionsCarleton University
Fundersnot available
KeywordsFusariumVirulenceBiologyNADPH oxidaseCysteineReactive oxygen speciesMutantGeneEnzymeBiochemistryMicrobiologyGenetics

Abstract

fetched live from OpenAlex

Fusarium graminearum is a fungal plant pathogen that causes Fusarium Head Blight (FHB) on important food and feed cereal crops including wheat, maize and barley.Earlier studies identified distinct roles for NADPH oxidase (NOX) genes in F. graminearum.NOX enzymes generate reactive oxygen species (ROS) including hydrogen peroxide (H 2 O 2 ), which are important in signal transduction.To elucidate the mechanism of NOX dependent signaling in pathogenicity, a proteomics approach was used to examine redox changes in the ΔnoxA/B mutant and compared to wildtype F. graminearum strain.Candidate substrates of NOX enzymes were characterized by genetic analysis.Deletion and overexpression of one of the candidate genes, FGSG_10089 with modified cysteine residues confirmed that it is likely a genuine substrate of the NOX enzyme complex.Bioinformatics and expression analysis indicate that this protein may function as a virulence factor.Deletion of FGSG_10089 as well as modification of the cysteine residue C 325 resulted in reduced virulence on wheat.In addition, there was a decrease in production of 15-acetyl deoxynivalenol in culture.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.003

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.011
GPT teacher head0.223
Teacher spread0.213 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2015
Admission routes1
Has abstractyes

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