{"type": "FeatureCollection", "features": [{"id": "33774364", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:30:32Z", "type": "Journal Article", "created": "2021-03-13", "title": "X-ray absorption spectroscopy evidence of sulfur-bound cadmium in the Cd-hyperaccumulator Solanum nigrum and the non-accumulator Solanum melongena", "description": "It has been proposed that non-protein thiols and organic acids play a major role in cadmium phytoavailability and distribution in plants. In the Cd-hyperaccumulator Solanum nigrum and non-accumulator Solanum melongena, the role of these organic ligands in the accumulation and detoxification mechanisms of Cd are debated. In this study, we used X-ray absorption spectroscopy to investigate Cd speciation in these plants (roots, stem, leaves) and in the soils used for their culture to unravel the plants responses to Cd exposure. The results show that Cd in the 100\u00a0mg\u00a0kg-1 Cd-doped clayey loam soil is sorbed onto iron oxyhydroxides. In both S.\u00a0nigrum and S.\u00a0melongena, Cd in roots and fresh leaves is mainly bound to thiol ligands, with a small contribution of inorganic S ligands in S.\u00a0nigrum leaves. We interpret the Cd binding to sulfur ligands as detoxification mechanisms, possibly involving the sequestration of Cd complexed with glutathione or phytochelatins in the plant vacuoles. In the stems, results show an increase binding of Cd to -O ligands (>50% for S.\u00a0nigrum). We suggest that Cd is partly complexed by organic acids for transportation in the sap.", "keywords": ["[SDE] Environmental Sciences", "0106 biological sciences", "570", "[CHIM.ANAL] Chemical Sciences/Analytical chemistry", "http://aims.fao.org/aos/agrovoc/c_28566", "cadmium", "http://aims.fao.org/aos/agrovoc/c_2219", "Speciation", "Plant Roots", "01 natural sciences", "[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics", "d\u00e9toxification", "[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry", "[SDE.ES] Environmental Sciences/Environment and Society", "Soil Pollutants", "http://aims.fao.org/aos/agrovoc/c_32389", "Solanum melongena", "http://aims.fao.org/aos/agrovoc/c_5383", "Solanaceae", "Solanum nigrum", "0105 earth and related environmental sciences", "580", "Toxicity", "thiol", "X-Ray absorption spectroscopy", "[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics", "3. Good health", "http://aims.fao.org/aos/agrovoc/c_7731", "bioaccumulation", "Biodegradation", " Environmental", "X-Ray Absorption Spectroscopy", "acide organique", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_7218", "[SDE]Environmental Sciences", "http://aims.fao.org/aos/agrovoc/c_32250", "[SDU.STU] Sciences of the Universe [physics]/Earth Sciences", "spectroscopie aux rayons x", "H50 - Troubles divers des plantes", "P02 - Pollution", "http://aims.fao.org/aos/agrovoc/c_1178", "Sulfur", "Cadmium"]}, "links": [{"href": "https://doi.org/33774364"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "33774364", "name": "item", "description": "33774364", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/33774364"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%5BSDU.STU.GC%5D+Sciences+of+the+Universe+%5Bphysics%5D%2FEarth+Sciences%2FGeochemistry&offset=45&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=%5BSDU.STU.GC%5D+Sciences+of+the+Universe+%5Bphysics%5D%2FEarth+Sciences%2FGeochemistry&offset=45&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": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%5BSDU.STU.GC%5D+Sciences+of+the+Universe+%5Bphysics%5D%2FEarth+Sciences%2FGeochemistry&offset=0", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=%5BSDU.STU.GC%5D+Sciences+of+the+Universe+%5Bphysics%5D%2FEarth+Sciences%2FGeochemistry&offset=46", "hreflang": "en-US"}], "numberMatched": 46, "numberReturned": 1, "distributedFeatures": [], "timeStamp": "2026-06-26T20:05:14.276755Z"}