{"type": "FeatureCollection", "features": [{"id": "10.1016/j.jplph.2012.02.014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:16:31Z", "type": "Journal Article", "created": "2012-04-24", "title": "Drought Stress Has Contrasting Effects On Antioxidant Enzymes Activity And Phenylpropanoid Biosynthesis In Fraxinus Ornus Leaves: An Excess Light Stress Affair?", "description": "The experiment was conducted using Fraxinus ornus plants grown outside under full sunlight irradiance, and supplied with 100% (well-watered, WW), 40% (mild drought, MD), or 20% (severe drought, SD) of the daily evapotranspiration demand, with the main objective of exploring the effect of excess light stress on the activity of antioxidant enzymes and phenylpropanoid biosynthesis. Net CO\u2082 assimilation rate at saturating light and daily assimilated CO\u2082 were significantly smaller in SD than in WW and MD plants. Xanthophyll-cycle pigments supported nonphotochemical quenching to a significantly greater extent in SD than in MD and WW leaves. As a consequence, the actual efficiency of PSII (\u03a6(PSII)) was smaller, while the excess excitation-energy in the photosynthetic apparatus was greater in SD than in WW or MD plants. The concentrations of violaxanthin-cycle pigments relative to total chlorophyll (Chl(tot)) exceeded 200 mmol mol\u207b\u00b9 Chl(tot) in SD leaves at the end of the experiment. This leads to hypothesize for zeaxanthin a role not only as nonphotochemical quencher, but also as chloroplast antioxidant. Reductions in ascorbate peroxidase and catalase activities, as drought-stress progressed, were paralleled by greater accumulations of esculetin and quercetin 3-O-glycosides, both phenylpropanoids having effective capacity to scavenge H\u2082O\u2082. The drought-induced accumulation of esculetin and quercetin 3-O-glycosides in the vacuoles of mesophyll cells is consistent with their putative functions as reducing agents for H\u2082O\u2082 in excess light-stressed leaves. Nonetheless, the concentration of H\u2082O\u2082 and the lipid peroxidation were significantly greater in SD than in MD and WW leaves. It is speculated that vacuolar phenylpropanoids may constitute a secondary antioxidant system, even on a temporal basis, activated upon the depletion of primary antioxidant defences, and aimed at keeping whole-cell H\u2082O\u2082 within a sub-lethal concentration range.", "keywords": ["0301 basic medicine", "Analysis of Variance", "Principal Component Analysis", "0303 health sciences", "Time Factors", "Light", "Propanols", "Antioxidant enzymes Drought stress Phenylpropanoids Water relations Violaxanthin-cycle pigments", "Hydrogen Peroxide", "Pigments", " Biological", "Carbon Dioxide", "15. Life on land", "Antioxidants", "6. Clean water", "Antioxidant enzymes; Drought stress; Phenylpropanoids; Violaxanthin-cycle pigments; Water relations; Analysis of Variance; Antioxidants; Carbon Dioxide; Fraxinus; Hydrogen Peroxide; Malondialdehyde; Mesophyll Cells; Microscopy", " Fluorescence; Photosynthesis; Pigments", " Biological; Plant Leaves; Principal Component Analysis; Propanols; Stress", " Physiological; Time Factors; Droughts; Light; Plant Science; Physiology; Agronomy and Crop Science", "Droughts", "Plant Leaves", "03 medical and health sciences", "Fraxinus", "Microscopy", " Fluorescence", "Stress", " Physiological", "Antioxidant enzymes; drought stress; flavonoids", "Malondialdehyde", "Photosynthesis", "Mesophyll Cells"]}, "links": [{"href": "https://doi.org/10.1016/j.jplph.2012.02.014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Plant%20Physiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jplph.2012.02.014", "name": "item", "description": "10.1016/j.jplph.2012.02.014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jplph.2012.02.014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-07-01T00:00:00Z"}}, {"id": "10.1111/nph.15014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:19:01Z", "type": "Journal Article", "created": "2018-02-09", "title": "Native soils with their microbiotas elicit a state of alert in tomato plants", "description": "Summary<p>   <p>Several studies have investigated soil microbial biodiversity, but understanding of the mechanisms underlying plant responses to soil microbiota remains in its infancy. Here, we focused on tomato (Solanum lycopersicum), testing the hypothesis that plants grown on native soils display different responses to soil microbiotas.</p>  <p>Using transcriptomics, proteomics, and biochemistry, we describe the responses of two tomato genotypes (susceptible or resistant to Fusarium oxysporum f. sp. lycopersici) grown on an artificial growth substrate and two native soils (conducive and suppressive to Fusarium).</p>  <p>Native soils affected tomato responses by modulating pathways involved in responses to oxidative stress, phenol biosynthesis, lignin deposition, and innate immunity, particularly in the suppressive soil. In tomato plants grown on steam\uffe2\uff80\uff90disinfected soils, total phenols and lignin decreased significantly. The inoculation of a mycorrhizal fungus partly rescued this response locally and systemically. Plants inoculated with the fungal pathogen showed reduced disease symptoms in the resistant genotype in both soils, but the susceptible genotype was partially protected from the pathogen only when grown on the suppressive soil.</p>  <p>The \uffe2\uff80\uff98state of alert\uffe2\uff80\uff99 detected in tomatoes reveals novel mechanisms operating in plants in native soils and the soil microbiota appears to be one of the drivers of these plant responses.</p>  </p>", "keywords": ["0301 basic medicine", "Proteome", "Propanols", "Arbuscular mycorrhizal fungi", "arbuscular mycorrhizal fungi", "tomato", "Lignin", "Models", " Biological", "Plant Roots", "defence responses", "Tomato", "Soil", "03 medical and health sciences", "Solanum lycopersicum", "Gene Expression Regulation", " Plant", "Stress", " Physiological", "microbiota", "Plant Immunity", "Soil Microbiology", "suppressive and conducive soils", "susceptible and resistant genotypes", "2. Zero hunger", "0303 health sciences", "Defence responses", "Microbiota", "15. Life on land", "Lignin biosynthesis", "Gene Ontology", "Susceptible and resistant genotypes", "Arbuscular mycorrhizal fungi; Defence responses; Lignin biosynthesis; Microbiota; Suppressive and conducive soils; Susceptible and resistant genotypes; Tomato; Physiology; Plant Science", "Suppressive and conducive soils", "Transcriptome", "lignin biosynthesis"]}, "links": [{"href": "https://iris.unito.it/bitstream/2318/1660820/1/Chialva%20et%20al%20Iris.pdf"}, {"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15014"}, {"href": "https://doi.org/10.1111/nph.15014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/nph.15014", "name": "item", "description": "10.1111/nph.15014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.15014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-02-09T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Propanols&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Propanols&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Propanols&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Propanols&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-05-26T03:52:24.970214Z"}