{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T20:53:10Z","timestamp":1792183990620,"version":"4.4.0"},"reference-count":52,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2011,6,15]],"date-time":"2011-06-15T00:00:00Z","timestamp":1308096000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Physiologia Plantarum"],"published-print":{"date-parts":[[2011,9]]},"abstract":"<jats:p>To characterize the dynamics of Cd<jats:sup>2+<\/jats:sup> flux in the rhizosphere and to study cadmium (Cd) plant\u2010internal partitioning in roots, wood, bark and leaves in relation to energy metabolism, reactive oxygen species (ROS) formation and antioxidants, <jats:italic>Populus \u00d7 canescens<\/jats:italic> plantlets were exposed to either 0 or 50 \u00b5<jats:italic>M<\/jats:italic> CdSO<jats:sub>4<\/jats:sub> for up to 20 days in the nutrient solution. A strong net Cd<jats:sup>2+<\/jats:sup> influx in root apex was observed after Cd exposure for 24 h, even if net Cd<jats:sup>2+<\/jats:sup> influx decreased gradually in roots. A large amount of Cd was accumulated in roots. Cd ions were uploaded via the xylem to leaves and further transported to the phloem where significant accumulation was detected. Cd accumulation led to decreased photosynthetic carbon assimilation but not to the depletion in soluble carbohydrates. Increased levels of ROS were present in all tissues, except the bark of Cd\u2010exposed poplars. To combat Cd\u2010induced superoxide and hydrogen peroxide, <jats:italic>P.<\/jats:italic>\u00d7<jats:italic>canescens<\/jats:italic> appeared to rely mainly on the formation of soluble phenolics as these compounds showed the highest accumulation in the bark and the lowest in wood. Other potential radical scavengers such as proline, sugar alcohols and antioxidant enzymes showed tissue\u2010 and exposure time\u2010specific responses to Cd. These results indicate a complex pattern of internal Cd allocation in <jats:italic>P.<\/jats:italic>\u00d7<jats:italic>canescens<\/jats:italic> resulting in higher ROS stress in wood than in bark and intermediate responses in roots and leaves, probably because of differential capacities of these tissues for the production of protective phenolic compounds.<\/jats:p>","DOI":"10.1111\/j.1399-3054.2011.01487.x","type":"journal-article","created":{"date-parts":[[2011,5,26]],"date-time":"2011-05-26T07:21:03Z","timestamp":1306394463000},"page":"50-63","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":240,"title":["Net cadmium flux and accumulation reveal tissue\u2010specific oxidative stress and detoxification in <i>Populus \u00d7 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