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Screening of the proteins related to the cultivar-dependent cadmium accumulation of Brassica parachinensis L. | LitMetric

Screening of the proteins related to the cultivar-dependent cadmium accumulation of Brassica parachinensis L.

Ecotoxicol Environ Saf

State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-Sen University, Xingang Xi Road 135, Guangzhou, 510275, China. Electronic address:

Published: January 2020

Cultivar-dependent cadmium (Cd) accumulation was principal in developing Cd-pollution safe cultivars (PSCs). Proteins related to different Cd accumulations of the low-Cd-accumulating (SJ19) and high-Cd-accumulating (CX4) cultivars were investigated by iTRAQ analysis. Higher Cd bioaccumulation factors and translocation factor in CX4 than in SJ19 were consistent with the cultivar-dependent Cd accumulations. The Cd uptake was promoted in CX4 due to its higher expression of Cd-binding proteins and the lower expression of Cd-efflux proteins in roots. What's more, significantly elevated thiol groups (PC and PC) in CX4 under Cd stress might contribute to the high Cd accumulation in roots and the root-to-shoot translocation of Cd-PC complex. Up-regulated proteins involved in cellulose biosynthesis and pectin de-esterification in SJ19 enhanced the Cd sequestration of root cell walls, which was considered as the predominant strategy for reducing Cd accumulation in shoots. The present study provided novel insights in the cultivar-dependent Cd accumulation in shoots of B. parachinensis.

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Source
http://dx.doi.org/10.1016/j.ecoenv.2019.109858DOI Listing

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