2015
DOI: 10.3389/fpls.2015.00133
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Target or barrier? The cell wall of early- and later-diverging plants vs cadmium toxicity: differences in the response mechanisms

Abstract: Increasing industrialization and urbanization result in emission of pollutants in the environment including toxic heavy metals, as cadmium and lead. Among the different heavy metals contaminating the environment, cadmium raises great concern, as it is ecotoxic and as such can heavily impact ecosystems. The cell wall is the first structure of plant cells to come in contact with heavy metals. Its composition, characterized by proteins, polysaccharides and in some instances lignin and other phenolic compounds, co… Show more

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Cited by 310 publications
(147 citation statements)
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“…Cell walls are the first barrier against HM entry into plant cells. HM ions can bind to the functional groups of cell wall components, such as cellulose, hemicellulose, lignin, and pectin (Chen, Liu, Wang, Zhang, & Owens, ; Parrotta, Guerriero, Sergeant, Cai, & Hausman, ). Some plants can enhance their lignin biosynthesis in response to HM exposure, thereby suggesting that lignin in plant cell walls plays a role in sequestering HMs (Cheng et al, ; Elobeid, Gobel, Feussner, & Polle, ).…”
Section: Physiological and Molecular Mechanisms Of Hm Accumulation Inmentioning
confidence: 99%
“…Cell walls are the first barrier against HM entry into plant cells. HM ions can bind to the functional groups of cell wall components, such as cellulose, hemicellulose, lignin, and pectin (Chen, Liu, Wang, Zhang, & Owens, ; Parrotta, Guerriero, Sergeant, Cai, & Hausman, ). Some plants can enhance their lignin biosynthesis in response to HM exposure, thereby suggesting that lignin in plant cell walls plays a role in sequestering HMs (Cheng et al, ; Elobeid, Gobel, Feussner, & Polle, ).…”
Section: Physiological and Molecular Mechanisms Of Hm Accumulation Inmentioning
confidence: 99%
“…It is an active structure which partakes in crucial stages of plant development and in cell signaling under exogenous stresses (Parrotta et al, 2015). A specific system of sensors ensures indeed the perception of the cell wall integrity status, which becomes perturbed upon i.e.…”
Section: Introductionmentioning
confidence: 99%
“…This would help to stronger link the exposure monitoring by use of moss with effect-related monitoring of forest ecosystem condition (Saarikoski et al 2015). That approach should be added by physiological investigations on how moss species adjust their cell morphology and metabolism to environmental stress (Basile et al 2013;Müller et al 2015;Parrotta et al 2015). A spatial re-arrangement of EMS sampling sites should be discussed and an adapted sampling size should be investigated by error maps for pollutants which have toxicological and ecological effects.…”
Section: Resultsmentioning
confidence: 99%