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CRISPR-Cas systems; brown rice; cadmium; cultivars; genes; germplasm; hydroponics; mutants; paddies; plant growth; rice straw; seedlings; China
Abstract:
... The OsLCD gene, which has been implicated in cadmium (Cd) accumulation in rice, might be a useful target for CRISPR/Cas9 editing. However, the effects of OsLCD gene editing on Cd accumulation, plant growth, and yield traits remain unknown. Here, we used CRISPR/Cas9 to generate oslcd single mutants from indica and japonica rice cultivars. We also generated osnramp5 single mutants and oslcd osnramp5 ...
bioaccumulation; cadmium; cultivars; hydroponics; oxidative stress; phytoremediation; rice; saline soils; salinity; salt stress; salt tolerance; sustainable agriculture; synergism; toxicity; China
Abstract:
... Salt-tolerant rice (sea rice) is a key cultivar for increasing rice yields in salinity soil. The co-existence of salinity and cadmium (Cd) toxicities in the plant-soil system has become a great challenge for sustainable agriculture, especially in some estuaries and coastal areas. However, little information is available on the Cd accumulating features of sea rice under the co-stress of Cd and sali ...
... Rapid industrialization and over-use of agrochemicals may lead to cadmium (Cd) contamination in agricultural soil, posing serious threat to human health. In recent times, application of plant nutrients and other growth promoting substances, like, nanoparticles (nZVI), silicon, salicylic acid were reported to have ameliorated Cd toxicity, in this regard, nitrogen (N) amendment can be a promising te ...
Summeya Munawar; Muhammad Awais Ghani; Basharat Ali; Muhammad Azam; Romana Anjum; Muhammad Sarwar; Tanveer Ahmad; Anam Noor; Qumer Iqbal; Kaiser Latif Cheema; Muhammad Muzammil Jahangir; Muhammad Zahid Rashid; Jahanzeb Ahmad; Muhammad Mehran Abbas
... In recent decades, adverse effects of unexpected contaminants on the quality of crops have threatened both the food security and human health. Vegetable production in heavy metal contaminated soils is a serious concern regarding the quality of food. Glutamic acid has been extensively studied as a stress-responsive antioxidant molecule and its function is involved in triggering plant growth during ...
... Cadmium is a toxic non-essential metal for almost all living systems. It is one of the biggest challenges for farmlands and the food chain because of its toxic effect on human health. This research aims to determine the Cd content in soils, litter and cacao beans, following the Cd fluxes within each cacao system using the two-dimensional electrical resistivity tomography technique. The study was c ...
... Cadmium (Cd) contamination in soils and accumulation in cereal grains have posed food security risks and serious health concerns worldwide. Understanding the Cd transport process and its management for minimizing Cd accumulation in cereals may help to improve crop growth and grain quality. In this review, we summarize Cd uptake, translocation, and accumulation mechanisms in cereal crops and discus ...
... Pennisetum grasses (P. purpureum Schumach. ‘Purple’, P. alopecuroides (L.) Spreng. ‘Liren’ and P. alopecuroides (L.) Spreng. ‘Changsui’), and a cadmium (Cd) hyperaccumulator (Thlaspi caerulescens J.Presl & C.Presl), were grown in soil with four Cd addition levels of 0, 2, 20 and 200 mg/kg. Toxicity symptoms were not observed although growth of all plants decreased as Cd addition increased. Shoot b ...
adulterated products; cadmium; cultivars; drugs; heavy metals; medicine; product quality; quality control; soil composition; spectroscopy; thin layer chromatography; variance; world markets; China; Europe
Abstract:
... Chrysanthemum flowers [Ch. x morifolium (Ramat.) Hemsl. and Ch. indicum L.] are a globally used and pharmacologically interesting botanical drug, however, with variable product quality. We aim at understanding the chemical variability of primary material available commercially based on different origins and associated quality problems like contamination with heavy metals. This needs to be assessed ...
... Soybean can provide rich protein and fat and has great economic value worldwide. Cadmium (Cd) is a toxic heavy metal to organisms. It can accumulate in plants and be transmitted to the human body via the food chain. Cd is a serious threat to soybean development, particularly root growth. Some soybean cultivars present tolerant symptoms under Cd stress; however, the potential mechanisms are not ful ...
Oxisols; biomass; cadmium; cultivars; grain yield; highlands; human food chain; human population; humans; polluted soils; rice; staple foods; Asia; Brazil
Abstract:
... With its accumulation in upland rice, cadmium (Cd) can easily enter the human food chain, which poses a global health threat considering nearly half of the human population depends on rice as a staple food source. A study was conducted to (1) evaluate Cd accumulation by rice cultivars, grown in Cd-polluted Tropical Oxisols, with different levels of Cd tolerance; (2) quantify Cd transfer from soil ...
Geobacter; Massilia; cadmium; cultivars; field experimentation; microbial communities; phosphates; polluted soils; rhizosphere; rhizosphere bacteria; rice; China
Abstract:
... The association between the rhizospheric microbial community and Cd accumulation in rice is poorly understood. A field trial was conducted to investigate the different rhizobacterial communities of two rice cultivars with high Cd accumulation (HA) and low Cd accumulation (LA) at four growth stages. Results showed that the Cd content in the roots of the HA cultivar was 1.23 - 27.53 higher than that ...
... The purpose of the study was to compare differences in Cd²⁺ flux in the vicinity of root tips of 20 soybean cultivars under mild Cd stress conditions using non-invasive micro-test technology (NMT). The results indicated that Cd²⁺ influx to the root tips under mild Cd treatment was higher compared to controls. Cd²⁺ influx showed an obvious spatial distribution, with the highest Cd²⁺ influx measured ...
... In this study, three cadmium (Cd)-resistant fungal strains, temporarily named as F1, F2 and F3 were isolated from the roots of Cd-tolerant soybean cultivars, rhizosphere and bulk soils, respectively, in contaminated sites. Cd-resistant strains F1, F2 and F3 were characterized for their effect on biomass, Cd uptake and translocation of two soybean cultivars (Liaodou36 and Liaodou33) grown in Cd-con ...
... Fly ash and steel slag can potentially mitigate the cadmium (Cd) and arsenic (As) accumulation in rice grains but their long-term effectiveness and impact on soil health are unclear. By running a four-crop-season field trial, we found that the concentrations of Cd, As and inorganic As in rice grains were significantly reduced by steel slag and (consecutively applied) fly ash. For both amendments, ...
... The phytoremediation potential of industrial hemp (Cannabis sativa L.) becomes a new target of hemp cultivation. The ability to accumulate cadmium depends on genetic, anatomical and physiological characteristics of the varieties. The published data show that the level of fertilization affects many metabolic pathways, the development of plants and cannabinoid concentration. In addition, there are i ...
... BACKGROUND: Sugar not only is an important biomacromolecule that plays important roles in plant growth, development, and biotic and abiotic stress tolerance but also provides a skeleton for other macromolecules, such as proteins and nucleic acids. Sugar transporter proteins (STPs) play essential roles in plant sugar transport and ultimately affect the abovementioned life processes. However, the ev ...
... Due to the increasing concerns of heavy metal contamination in greenhouse soil, the safe production of vegetables, especially leafy vegetables, is largely limited. In this study, the cadmium (Cd) concentration and major nutritional qualities of 23 main celery cultivars from China were compared in a greenhouse experiment. Large genotypic differences in biomass, cadmium accumulation and nutrition tr ...
... Cadmium (Cd) is a widespread environmental contaminant, and its increasing concentrations in rice poses significant risks to human health. Globally, rice is a staple food for millions of people, and consequently, effective strategies to reduce Cd accumulation in rice are needed. This study investigates the effect of soil pH (Soil 1: 4.6; Soil 2: 6.6) and iron (Fe) application (at 0, 1.0 and 2.0 g/ ...
... Recently, the phytoremediation and safe utilization of cadmium (Cd) polluted soil by mulberry planting and sericulture have attracted researchers' attention. However, the understandings of related molecular mechanisms of mulberry response to Cd are still limited. Meanwhile, there are few reports on the diversity of the Cd tolerance and accumulation ability of different mulberry cultivars. Here, we ...
... Contamination with cadmium (Cd) and lead (Pb) in rice and paddy soil threatens food safety and human health. This study determined the effects of oyster shell amendment (0, 6, and 12 g kg⁻¹) on the mobility and uptake of Cd and Pb by two rice plants (ZY18, japonica and DL5, indica) in contaminated paddy soil. Oyster shell amendment significantly increased the pH of soil and pore water, and decreas ...
Panicum virgatum; agronomy; bioenergy; biomass production; cadmium; cultivars; grasses; highlands; hydroponics; phytoremediation; planting; water use efficiency
Abstract:
... Planting bioenergy crops with high water-use efficiency (WUE) on heavy metal-polluted land is a good practice for biomass production and phytoremediation. Switchgrass (Panicum virgatum L.), a C₄ perennial bioenergy grass, is native to the United States. The relationship between the WUE and Cd accumulation of switchgrass has seldom been studied. Here, the WUE and Cd accumulation characteristics of ...
... Cadmium (Cd) and arsenic (As) exist simultaneously in soil environment, which poses a serious threat to the safety of agricultural products and forage production. Four Perennial Ryegrass (Lolium perenne L.) cultivars with different accumulation characteristics (ʻNicaraguaʼ, ʻVenusʼ, ʻExcellentʼ and ʻMonroʼ) were selected as the material for pot experiment. The coupled responses of key components a ...
... When rice plants grown in paddy fields with Cd content of 0.3–1.5 mg kg⁻¹, Cd quantities in roots and straws were 2–7 times higher than that in topsoil. Return of these vegetative organs to topsoil aggravated the ecological risk of Cd pollution. Cd content in rice grains was 0.1–1.3 mg kg⁻¹, and hazard quotients for local consumers by intake of these rice were 0.7–8.8. Planting low-Cd-accumulating ...
... Root radial transport is important for cadmium (Cd) absorption and root-shoot translocation. However, the relationship between root structural characteristics and radial transport of Cd in wheat is still unclear. Six wheat cultivars with different Cd tolerance and accumulation characteristics were used to investigate the roles of root phenotype, microstructure, and apoplastic and symplastic pathwa ...
Brassica rapa subsp. chinensis var. parachinensis; biosynthesis; botany; cadmium; cell walls; cultivars; density functional theory; lignin; methyltransferases; nuclear magnetic resonance spectroscopy; peroxidase; quantum mechanics
Abstract:
... Cadmium (Cd) immobilization in the cell wall is responsible for Cd detoxification in Cd-accumulating cultivars. Lignin is the dominant constituent of the secondary cell wall (SCW), but its role in Cd compartmentalization is poorly understood. The mechanism of Cd compartmentalization by lignin was thus investigated herein. Lignin content and composition, as well as related genes and proteins, were ...
Beijerinckiaceae; Gemmatimonadaceae; Sphingomonadaceae; Triticum aestivum; cadmium; cultivars; environment; field experimentation; human health; nitrification; rhizosphere; soil; toxicity; wheat; zinc
Abstract:
... Microorganisms can modulate the contents of cadmium (Cd) and zinc (Zn) in wheat grains. Increasing the essential nutrient element Zn and decreasing the toxic element Cd in wheat grains can significantly improve human health. To characterize the specific bacterial communities associated with Cd and Zn accumulation in wheat, we conducted a field experiment by planting wheat cultivars differing in th ...
Oryza sativa; bioaccumulation; cadmium; calcium; calmodulin; chemistry; cultivars; ecotoxicology; gene expression; glutathione transferase; heavy metals; hydroponics; immunity; nutrient management; nutrition; protein kinases; rice; signal transduction; toxicity; transcriptomics; zinc
Abstract:
... Consumption of rice (Oryza sativa L.) is one of the major pathways for heavy metal bioaccumulation in humans over time. Understanding the molecular responses of rice to heavy metal contamination in agriculture is useful for eco-toxicological assessment of cadmium (Cd) and its interaction with zinc (Zn). In certain crops, the impacts of Cd stress or Zn nutrition on the biophysical chemistry and gen ...
... Cadmium (Cd) is a toxic, nonessential heavy metal; its accumulation in plants alters metabolism and limits productivity. Although various studies have addressed the Cd stress response in various species, the detailed molecular mechanisms remain unknown. Therefore, the present work investigated the influence of the TaMYC8 transcription factor (TF) on the Cd-induced stress response in wheat. The pre ...
Camellia sinensis; World Health Organization; arsenic; biochar; cadmium; chromium; cultivars; food chemistry; greenhouse experimentation; soil; tea
Abstract:
... Effect of tea pruning litter biochar (TPLBC) on arsenic (As), cadmium (Cd) and chromium (Cr) content in made tea and successive tea infusions were investigated in a greenhouse experiment with two tea cultivars (TV23 and S.3A/3). Made tea prepared from TV23 and S.3A/3 clone, a decrease in the concentration of As, Cd, and Cr by 36.73%, 16.22%, 13.96%, and 36.63%, 27.78%, 10.54%, respectively over co ...
... The minimization of Cd pollution in wheat is urgently needed in many parts of the world. Thus, the aims of the present study were to evaluate the feasibility of popular technologies (i.e., soil amendment and low-Cd wheat cultivar) at sites with different Cd risk levels (high and low) and to propose a risk-based strategy for safe grain production. At a high-Cd site, wheat variety JM22 yielded signi ...
... Plant natural resistance-associated macrophage protein (NRAMP) plays an important role in maintaining intracellular metal homeostasis and coping with environmental heavy metal stress. Until now, studies on NRAMP in tobacco have been limited. In this study, NtNRAMP1 was cloned from tobacco cultivar TN90, and the highest expression level was observed in the roots, which was strongly induced by Fe de ...
... This study is focused on the evaluation of the accumulation of Cd, Pb and Zn in five cultivars of Cichorium intybus L. (chicory) which were produced on contaminated agricultural soil. Over a growth period of 211 days, the roots and leaves were collected in four stages and then analyzed by flame atomic absorption spectrometry to measure the concentration and distribution of the target metals in the ...
... To decrease the transfer of cadmium (Cd) to the food chain, it is essential to select wheat (Triticum aestivum L.) germplasm that accumulates the least amount of Cd and to develop management practices that promote a reduction in Cd uptake. This requires knowledge of factors controlling Cd accumulation in wheat plants, which are not fully understood. The aim of this study was thus to investigate va ...
Vigna radiata; cadmium; cultivars; dose response; growth and development; hypersensitivity; manganese; mung beans; mutants; toxicity; transcriptomics; yeasts
Abstract:
... As a non-essential mineral, Cadmium inhibits the growth and development of plants. A cultivar (Sulu, SL as wild type) of mungbean is more sensitive to Cd toxicity than its mutant line (20#). However, there is little information about the underlying mechanism. In this study, mutant line (20#) of mungbean exhibited lower Cd accumulation than wild type SL based on the time-course and dose-dependent C ...
absorption; anemia; biofortification; cadmium; cultivars; diet; directed evolution; genome; heavy metals; human health; iron; malnutrition; poisoning; toxicity; zinc
Abstract:
... Millions of people are anemic due to inadequate consumption of foods rich in iron and zinc. Plant‐based foods provide most of our dietary nutrients but may also contain the toxic heavy metal cadmium (Cd). A low level of Cd silently enters the body through the diet. Once ingested, Cd may remain for decades. Hence, prolonged intake of Cd‐containing foods endangers human health. Research that leads t ...
... Cadmium (Cd) contaminant in soil can pollute crops and poison consumers higher in the food chain. Sorghum (Sorghum bicolor (L.) Moench) is a promising bioenergy crop that can absorb and accumulate Cd from soil while generate renewable biomass resources for bioethanol or other valuable products, and limit waste production by rational utilization of all components. In this study, a sustainable agric ...
Morus alba; biomass; cadmium; cultivars; field experimentation; forage; hyperaccumulators; mulberries; paddies; pollution; research; China
Abstract:
... A 3-year field experiment was conducted to evaluate the accumulation ability of 3 forage mulberry (Morus atropurpurea Roxb.) varieties (Guisangyou 62, Guisangyou 12, Yuesang 11) for Cadmium (Cd). The results showed that the shoot biomass of forage mulberry could reach to 64.51~69.58 t/ha in 2018. The total production of Guisangyou 12 was the highest among the tested 3 cultivars in each year. Howev ...
... High cadmium (Cd) concentration in common wheat (Triticum aestivum L.) grains poses potential health risks. Several management strategies have been used to reduce grain Cd concentration. However, limited information is available on the use of ammonium-nitrogen (NH₄⁺-N) as a strategy to manage Cd concentration in wheat grains. In this study, NH₄⁺-N addition at the seedling stage unchanged the grain ...
... The purpose of this study was to reveal the accumulation and phytotoxicity mechanism of sweet potato (Ipomoea batatas L.) roots following exposure to toxic levels of uranium (U) and cadmium (Cd). We selected two accumulation-type sweet potato cultivars as experimental material. The varietal differences in U and Cd accumulation and physiological metabolism were analyzed by a hydroponic experiment. ...
... BACKGROUND: MicroRNAs play pivotal roles in plant vegetative phase change and flowering induction via integrating into multiple flowering pathways. Lilium × formolongi is an important ornamental lily cultivar that can flower within one year after sowing. However, it remains unresolved how miRNA-mediated regulation networks contribute to the L. × formolongi characteristics of a short vegetative gro ...
... Application of hydrogen-rich water (HRW) could improve plant growth under stress conditions; however, its effects on early growth and related physiological functions of fragrant rice under cadmium (Cd) and lead (Pb) toxicity are unknown. The present study was composed of two HRW treatments, i.e., H0: without H₂ and HRW: with 500ppb H₂ gas, three treatments with two metals, i.e., M0: without heavy ...
... Cadmium contamination of agricultural soils threatens food safety. The bioaccumulation (BAF) of Cd in potato tubers ranged from 0.69 to 1.50 and 0.39 to 0.82 in acidic yellow and alkaline calcareous soils, respectively, when 0.3 to 4.8 mg Cd kg⁻¹ was added to the soil. The order of Cd concentration for different organs was root > stem > leaf > tuber. The BAF of Cd decreased with the increase of so ...
... Cadmium bioavailability in paddy soils is strongly affected by flooding-draining cycle. In this study, we used synchrotron-based X-ray absorption spectroscopy and a stirred-flow method to investigate the effects of flooding-draining and amendments of CaCO₃ and CaSO₄ on Cd speciation and release kinetics from a Cd-spiked paddy soil (total Cd concentration of 165 mg kg⁻¹). Extended X-ray absorption ...
... In vegetable production, Chinese cabbage can readily accumulate cadmium (Cd) into its edible parts and exceed food safety standards. However, there are still some ecotypes that respond differently to cadmium stress. This study aimed to investigate the differences of Cd-induced (0, 10, 50, 100, 200 µM) response under hydroponic culture between two Chinese cabbage ecotypes which were promoted in nor ...
... In North Africa, barley (Hordeum vulgare L) is the second most cultivated cereal. In Tunisia, barley is cultivated in mining areas with possible Cd soil contamination. The accumulation of Cd was studied in the 36 most cultivated North African barley cultivars cultured during 6 months on control soil and on soil containing 10 ppm of Cd. Cadmium did not affect germination and morphology in any culti ...
... Different wheat cultivars have their individual defense response to heavy metal stress, exploring which is beneficial to using targeted and effective agronomic practice to reduce cadmium (Cd) accumulation in plants. Our previous study shows Cd concentration is higher in the Cd-tolerant cultivar Bainong 160 than the sensitive one Pingan 8. In this experiment, Bainong 160 showed stronger Cd uptake c ...
... Soil cadmium (Cd) contamination has become a massive environmental problem. Kenaf is an industrial fiber crop with high tolerance to heavy metals and could be potentially used for soil phytoremediation. However, the molecular mechanism of Cd in kenaf tolerance remains largely unknown. In the present study, using two contrasting Cd sensitive kenaf (GH and YJ), the key factors accounting for differe ...
... Rice is a major staple food in China where farmland soil has widespread cadmium (Cd) and arsenic (As) contamination. To provide appropriate rice cultivars to guide rice production in Cd and As co-contaminated paddy soils, the factors affecting Cd and As concentrations in rice require clarification. A pot experiment was conducted to investigate Cd and As translocation and accumulation in different ...
... This research was carried out under greenhouse conditions to examine the Cd accumulation in the organs of some sorghum varieties at the end of cadmium treatment (0, 25, 50, 75, 100, and 125 mg kg⁻¹). At the end of a 130-day growing period, the Cd concentrations accumulated in the roots, stems, leaves, and grains of the plants were examined. In the 3 cultivars used in the study, the highest Cd conc ...
... This study presents information about the total concentration and bioaccessible fraction of barium (Ba), calcium (Ca), cadmium (Cd), copper (Cu), iron (Fe), mercury (Hg), potassium (K), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo), lead (Pb) and zinc (Zn) in different cultivars of tomato (Gaucho, Paulista, Italiano and Cherry) and their derivatives (sauce and tomato extract). The ...