title: Subcellular distribution and chemical forms of cadmium in two hot pepper cultivars differing in cadmium accumulation.
abstract: A greenhouse experiment was conducted to compare the subcellular distribution and chemical forms of cadmium (Cd) in roots, stems, leaves, and fruits between a low-Cd cultivar (Yeshengchaotianjiao, YCT) and a high-Cd cultivar (Jinfuzaohuangjiao, JFZ) of hot pepper (Capsicum annuum L.). The Cd concentrations in the root's subcellular fractions, and in all chemical forms in roots, were 1.85-4.88- and 1.84-4.90-fold higher, respectively, in YCT than in JFZ. Compared with JFZ, YCT had significantly lower Cd concentrations in the subcellular fractions (1.10-2.42-fold) of stems and leaves and in almost all chemical forms (1.17-2.97-fold) in the stems and leaves. Also, in fruits, the concentrations of Cd in the cell wall and soluble fractions were 1.18-2.24-fold significantly lower in YCT than in JFZ, and there were lower Cd concentrations (1.36-2.08-fold) in the chemical forms in YCT than in JFZ.
authors.affiliation: Department of Safety and Environmental Engineering, Hunan Institute of Technology , Hengyang 421002, China.
authors.forename: Junliang
authors.initials: J
authors.lastname: Xin
authors.forename: Baifei
authors.initials: B
authors.lastname: Huang
mesh_terms: D002104:Cadmium / Q000032:analysis* / Q000378:metabolism / Q000493:pharmacokinetics; D002212:Capsicum / Q000737:chemistry* / Q000378:metabolism / Q000648:ultrastructure*; D005638:Fruit / Q000737:chemistry / Q000648:ultrastructure; D018515:Plant Leaves / Q000737:chemistry / Q000648:ultrastructure; D018517:Plant Roots / Q000737:chemistry / Q000648:ultrastructure; D018547:Plant Stems / Q000737:chemistry / Q000648:ultrastructure; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000493:pharmacokinetics; D013045:Species Specificity; D013347:Subcellular Fractions / Q000737:chemistry*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium
keywords: cadmium (Cd); chemical form; hot pepper (Capsicum annuum L.); low-Cd cultivar; subcellular distribution