Identification of hot pepper cultivars containing low Cd levels after growing on contaminated soil: uptake and redistribution to the edible plant parts

Variations in phthalate ester (PAE) accumulation and their formation mechanism in Chinese flowering cabbage (Brassica parachinensis L.) cultivars grown on PAE-contaminated soils

“…The effects of contaminants on the biomass of plants vary with the levels of contaminants, the plant species and cultivar, and the duration of the stress (Xin et al, 2013). In this study, the biomasses of some Chinese flowering cabbage cultivars under low-PAE stress were comparable to or even higher than those of the control, which might result from low concentrations of PAEs activating enzymes that accelerated plant growth (Hashmi et al, 2014).…”

“…Some cultivars accumulate specific pollutants at levels low enough for safe consumption even when grown in contaminated soil (Liu et al, 2010;Yu et al, 2006). In the past decades, numerous programs for breeding antipollution or low-accumulation crop cultivars targeting heavy metals (especially Cd) have been conducted in various crops, including rice (Ishikawa et al, 2012), wheat (Stolt et al, 2006), soybean (Hao et al, 2011), barley (Chen et al, 2007), Chinese cabbage (Liu et al, 2010), water spinach (Wang et al, 2009), and hot pepper (Xin et al, 2013). The mechanisms that lead to low accumulation of heavy metals in some crop cultivars have been investigated (Ueno et al, 2010;Xin and Huang, 2014), and key genes that limit Cd accumulation in rice have been identified (Ishikawa et al, 2012).…”

Roles of rhizosphere and root-derived organic acids in Cd accumulation by two hot pepper cultivars

“…The cultivar selection of hot pepper was based on our previous study that investigated the variations of fruit Cd concentration among 30 cultivars at different soil Cd levels. The Cd concentration in fruits of JFZ was 2.1-to 2.7-fold higher than that in fruits of YCT when grown in Cdcontaminated soils (0.28-2.69 mg kg −1 dry weight, DW), and thus JFZ and YCT were identified as high-Cd and lowCd cultivars, respectively (Xin et al 2013).…”

“…To reduce our intake of Cd from hot pepper (Capsicum annuum L.), the Cd concentration in fruits of hot pepper must be reduced. Previously, we found that there was great difference in fruit Cd concentration among hot pepper cultivars (Xin et al 2013). Therefore, production of low-Cd cultivars of hot pepper can be a useful tool to reduce the amount of Cd entering the human diet.…”

“…In the previous studies, we identified some low-and highCd hot pepper cultivars (Xin et al 2013(Xin et al , 2014; however, limited information is available for the mechanisms of Cd variation between cultivars. The Cd fractions in the rhizosphere soil and the root release of LMWOAs can differ between hot pepper cultivars and thus be one of the reasons for their different abilities to accumulate Cd in the fruits.…”