Variations in cadmium accumulation among Chinese cabbage cultivars and screening for Cd-safe cultivars

Liu, Weitao; Zhou, Qixing; An, Jing; Sun, Yu; Liu, Rui

doi:10.1016/j.jhazmat.2009.08.147

Cited by 189 publications

(85 citation statements)

References 50 publications

(60 reference statements)

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“…It has been found that cultivars differ in their ability to detoxify Cd in between and within the plant species, which plays a significant role in the expression of high tolerance in crop plants to Cd toxicity. [19][20][21] Therefore smart selection of plant cultivars with the ability to tolerate Cd in the soil could be the best strategy to counteract the inhibitory effects of Cd in crop plants. Five cultivars of Indian mustard (Brassica juncea L.) were used in the present study to evaluate their relative tolerance to Cd toxicity on the basis of growth, photosynthesis, yield characteristics and antioxidant enzyme activity in the presence of different Cd concentrations in the soil (0, 25, 50, 100 or 150 mg Cd kg -1 ).…”

Section: Introductionmentioning

confidence: 99%

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Gill

Khan

Tuteja

2011

Plant Signaling & Behavior

140

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IntroductionAgricultural soils worldwide are slightly to moderately contaminated with toxic heavy metals that restrict the crop plants to reach their full genetic potential and cause significant loss by reducing the crop productivity. 1 Among heavy metals, Cd is a non-essential and most deleterious heavy metal pollutant commonly released into the arable soil from various industrial, mining and farming practices, 2 and has been ranked No. 7 among the top 20 toxins which affect the human health by entering in the food chain. 3,4 Although Cd is a highly phytotoxic metal, it is easily taken up by plant roots growing on Cd-contaminated soils and transported to above ground plant parts. 5-7 The regulatory limit of Cd in agricultural soils is 100 mg Cd kg -1 soil, 8 but this threshold is continuously increasing because of anthropogenic and industrial activities. Plants growing on Cd contaminated soil result in Cd accumulation in all plant parts, which inhibits plant growth, affect nutrient uptake, alters the chloroplast ultrastructure, inactivates enzymes of CO 2 fixation, inhibits photosynthesis and induces lipid peroxidation and antioxidant machinery. 4,[9][10][11] However, Cd is a non redox-active metal, but it induces the generation of reactive oxygen species (ROS) including superoxide radical (O 2•-), hydrogen peroxide (H 2 O 2 ) and hydroxyl radicalThe presence of cadmium (cd) in the agricultural soils affects horticultural cultivars and constrains the crop productivity. a pot experiment was performed using five cultivars of mustard (Brassica juncea L.) to evaluate the difference in their response to cd toxicity under greenhouse conditions. The pots containing reconstituted soil were supplied with different concentration of cdcl 2 (0, 25, 50, 100 or 150 mg cd kg -1 soil). Increasing concentration of cd in the soil resulted in decreased growth, photosynthesis and yield. Maximum significant reduction in growth, photosynthesis and yield were observed with 150 mg cd kg -1 soil in all the cultivars. Our results indicate that the cultivar alankar is found to be more tolerant to cd stress, recording higher plant dry mass, net photosynthesis rate, associated with high antioxidant activity and low cd content in the plant leaves and thus less oxidative damage. cultivar rh30 experienced maximum damage in terms of reduction in growth, photosynthesis, yield characteristics and oxidative damage and emerged as sensitive cultivar. The data of tolerance index of alankar were found to be higher among all tested mustard cultivars which indicate its higher tolerance to cd. Better coordination of antioxidants protected alankar from cd toxicity, whereas lesser antioxidant activity in rh30 resulted in maximum damage. cultivars of mustard were ranked with respect to their tolerance to cd: alankar > Varuna > Pusa Bold > Sakha > rh30, respectively.Differential cadmium stress tolerance in five indian mustard (Brassica juncea L.) cultivars

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Section: Introductionmentioning

confidence: 99%

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Gill

Khan

Tuteja

2011

Plant Signaling & Behavior

140

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“…Cadmium stress in plants leads to a series of stress symptoms, including wilting, chlorosis, cell death, necrotic lesions, and growth reduction [6]. Moreover, Cd stress may disturb mineral nutrition [7] and carbohydrate metabolism [8], and may strongly reduce biomass production (Liu et al, 2010). The photosynthetic apparatus is particularly susceptible to Cd and a reduction of photosynthesis is a common response in plants exposed to Cd [9].…”

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confidence: 99%

The Uptake, Accumulation, and Toxic Effects of Cadmium in Barnyardgrass (Echinochloa crus-galli)

Peng¹,

Chen²,

Wu³

et al. 2017

Pol. J. Environ. Stud.

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“…Previous studies showed that low doses of heavy metals may promote plant hormone secretion and regulate plant growth and development (Liu et al, 2010). However, the distinct tolerance mechanisms of water spinach genotypes to Cd are not fully understood.…”

Section: Discussionmentioning

confidence: 99%

“…New strategies have been applied to breeding and screening heavy metal low accumulator vegetable genotypes, such as Chinese cabbage (Brassica chinensis L.) (Liu et al, 2010;Wang X et al, 2015), pakchoi (Brassica rapa L. ssp. chinensis) (Chen et al, 2012), soybean (Glycine max Merr.)…”

Section: Introductionmentioning

confidence: 99%

Variations in cadmium and nitrate co-accumulation among water spinach genotypes and implications for screening safe genotypes for human consumption

Tang

Luo

et al. 2018

J. Zhejiang Univ. Sci. B

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Abstract:Vegetables are important constituents of the human diet. Heavy metals and nitrate are among the major contaminants of vegetables. Consumption of vegetables and fruits with accumulated heavy metals and nitrate has the potential to damage different body organs leading to unwanted effects. Breeding vegetables with low heavy metal and nitrate contaminants is a cost-effective approach. We investigated 38 water spinach genotypes for low Cd and nitrate co-accumulation. Four genotypes, i.e. JXDY, GZQL, XGDB, and B888, were found to have low co-accumulation of Cd (<0.71 mg/kg dry weight) and nitrate (<3100 mg/kg fresh weight) in the edible parts when grown in soils with moderate contamination of both Cd (1.10 mg/kg) and nitrate (235.2 mg/kg). These genotypes should be appropriate with minimized risk to humans who consume them. The Cd levels in the edible parts of water spinach were positively correlated with the concentration of Pb or Zn, but Cd, Pb, or Zn was negatively correlated with P concentration. These results indicate that these three heavy metals may be absorbed into the plant in similar proportions or in combination, minimizing the influx to aerial parts. Increasing P fertilizer application rates appears to prevent heavy metal and nitrate translocation to shoot tissues and the edible parts of water spinach on co-contaminated soils.

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Variations in cadmium accumulation among Chinese cabbage cultivars and screening for Cd-safe cultivars

Cited by 189 publications

References 50 publications

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

Differential cadmium stress tolerance in five Indian mustard (Brassica junceaL.) cultivars

The Uptake, Accumulation, and Toxic Effects of Cadmium in Barnyardgrass (Echinochloa crus-galli)

Variations in cadmium and nitrate co-accumulation among water spinach genotypes and implications for screening safe genotypes for human consumption

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