Co 3 O 4 Nanostructured Sensor for Electrochemical Detection of H 2 O 2 as a Stress Biomarker in Barley: Fe 3 O 4 Nanoparticles-Mediated Enhancement of Salt Stress Tolerance.

Abstract

This research investigates the enhancement of barley's resistance to salt stress by integrating nanoparticles and employing a nanostructured Co 3 O 4 sensor for the electrochemical detection of hydrogen peroxide (H 2 O 2 ), a crucial indicator of oxidative stress. The novel sensor, featuring petal-shaped Co 3 O 4 nanostructures, exhibits remarkable precision and sensitivity to H 2 O 2 in buffer solution, showcasing notable efficacy in complex analytes like plant juice. The research establishes that the introduction of Fe 3 O 4 nanoparticles significantly improves barley's ability to withstand salt stress, leading to a reduction in detected H 2 O 2 concentrations, alongside positive impacts on morphological parameters and photosynthesis rates. The developed sensor promises to provide real-time monitoring of barley stress responses, providing valuable information on increasing tolerance to crop stressors.

Plant phenotyping relevance

植物ストレス状態の指標であるH2O2を検出する電気化学センサーを開発し、緩衝液および植物汁液で性能を示しているため、植物生理フェノタイピング手法が中心です。

Code and data availability

The paper reports electrochemical H2O2 sensing in barley and salt-stress phenotyping, but the Data Availability Statement says data is contained within the article only. No public phenotype datasets, images, code, models, or supplements with paper-specific assets are mentioned; no repository or URL is provided.

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