Low root/shoot (R/S) biomass ratio can be an indicator of low cadmium accumulation in the shoot of Chinese flowering cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee) cultivars

Chinese flowering cabbage is a commonly consumed vegetable that accumulates Cd easily from Cd-contaminated soils. Cultivations of low-Cd cultivars are promising strategies for food safety, but low-Cd-accumulating mechanisms are not fully elucidated. To address this issue, 37 cultivars were screened...

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Bibliographic Details
Published in:Environmental science and pollution research international 2018-12, Vol.25 (36), p.36328-36340
Main Authors: Xu, Zhi-Min, Mei, Xiu-Qin, Tan, Ling, Li, Qu-Sheng, Wang, Li-Li, He, Bao-Yan, Guo, Shi-Hong, Zhou, Chu, Ye, Han-Jie
Format: Article
Language:English
Subjects:
Accumulation
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biomass
Brassica
Brassica oleracea
Cadmium
Cultivars
Dilution
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Exudates
Exudation
Flowering
Food safety
Hydroponics
Research Article
Rhizosphere
Sewage
Shoots
Soil contamination
Transport
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Chinese flowering cabbage is a commonly consumed vegetable that accumulates Cd easily from Cd-contaminated soils. Cultivations of low-Cd cultivars are promising strategies for food safety, but low-Cd-accumulating mechanisms are not fully elucidated. To address this issue, 37 cultivars were screened to identify high- and low-Cd cultivars upon exposure to sewage-irrigated garden soil pretreated with different Cd concentrations (1.81, 2.90, and 3.70 mg kg −1 dry soil). The results showed that shoot Cd concentrations differed among the cultivars by maximum degrees of 2.67-, 3.71-, and 3.00-fold under control and treatments, respectively. Soil-pot trial and hydroponic trial found no significant difference in Cd and Ca mobilization, uptake, and transport ability by root per weight between high- and low-Cd cultivars. Interestingly, a stable R/S ratio difference among cultivars ( p  
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-018-3566-x