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

被引：14
作者：
Fu, Hui-ling [1 ]
Wang, Xue-song [1 ]
Huang, Ying-ying [1 ,2 ]
Gong, Fei-yue [1 ]
Guo, Jing-jie [1 ]
He, Chun-tao [1 ]
Yang, Zhong-yi [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Xingang Xi Rd 135, Guangzhou 510275, Guangdong, Peoples R China
[2] Hunan Inst Technol, Sch Safety & Environm Engn, Hengyang 421002, Peoples R China
来源：
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2020年 / 188卷
基金：
中国国家自然科学基金;
关键词：
Cadmium (Cd); Brassica parachinensis L; Cultivar-dependent Cd accumulation; Differentially expressed proteins (DEPs); Cellulose; Phytochelatins (PCs); CATION-BINDING PROTEIN; CHEMICAL FORMS; CD ACCUMULATION; SUBCELLULAR-DISTRIBUTION; METAL ACCUMULATION; HEAVY-METALS; RICE; EXCLUSION; ALUMINUM; PECTIN;
D O I：
10.1016/j.ecoenv.2019.109858
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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 (PC2 and PC3) 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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页数：9
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