Cadmium concentration in terminal tissues as tools to select low-cadmium wheat

Liu, Caixia; Guttieri, Mary J.; Waters, Brian M.; Eskridge, Kent M.; Easterly, Amanda C.; Baenziger, P. Stephen

doi:10.1007/s11104-018-3712-8

Cited by 15 publications

(8 citation statements)

References 41 publications

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“…Through GO annotation and KEGG enrichment of differential genes and metabolites, it was found that cadmium stress affected carbon metabolism, nitrogen metabolism, galactose metabolism, plant signal transduction, glutathione metabolism, fatty acid metabolism and phenylpropanoid biosynthesis and other metabolic processes, which may be a stress response of buckwheat under cadmium stress (Figure 5). These induce oxidative stress and osmotic stress, and the change trend of carbohydrate content is consistent with the research in rice, wheat and other crops (Liu et al, 2018;Li et al, 2020).These induce oxidative stress and osmotic stress, and the change trend of carbohydrate content is consistent with the research in rice, wheat and other crops (Liu et al, 2018;Li et al, 2020).…”

Section: Figuresupporting

confidence: 86%

Integrated transcriptome and metabonomic analysis of key metabolic pathways in response to cadmium stress in novel buckwheat and cultivated species

et al. 2023

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IntroductionBuckwheat (Fagopyrum tataricum), an important food crop, also has medicinal uses. It is widely planted in Southwest China, overlapping with planting areas remarkably polluted by cadmium (Cd). Therefore, it is of great significance to study the response mechanism of buckwheat under Cd stress and further develop varieties with excellent Cd tolerance.MethodsIn this study, two critical periods of Cd stress treatment (days 7 and 14 after Cd treatment) of cultivated buckwheat (Pinku-1, named K33) and perennial species (F. tatari-cymosum Q.F. Chen) (duoku, named DK19) were analyzed using transcriptome and metabolomics.ResultsThe results showed that Cd stress led to changes in reactive oxygen species (ROS) and the chlorophyll system. Moreover, Cd-response genes related to stress response, amino acid metabolism, and ROS scavenging were enriched or activated in DK19. Transcriptome and metabolomic analyses highlighted the important role of galactose, lipid (glycerophosphatide metabolism and glycerophosphatide metabolism), and glutathione metabolism in response to Cd stress in buckwheat, which are significantly enriched at the gene and metabolic levels in DK19.DiscussionThe results of the present study provide valuable information for a better understanding of the molecular mechanisms underlying Cd tolerance in buckwheat and useful clues for the genetic improvement of drought tolerance in buckwheat.

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Section: Figuresupporting

confidence: 86%

Integrated transcriptome and metabonomic analysis of key metabolic pathways in response to cadmium stress in novel buckwheat and cultivated species

et al. 2023

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“…The field management followed the standard agricultural practices for both locations, and each plot was sprayed with fungicide to control fungal disease. Our previous study showed that the application of fungicide has no effect on grain Cd concentration (C. Liu et al, 2018).…”

Section: Experimental Design and Phenotypic Evaluationmentioning

confidence: 99%

“…Soil test data are given in Supplemental Table S3. Our previous study showed that the application of fungicide has no effect on grain Cd concentration (C. Liu et al, 2018). The randomization was done in AGROBASE Generation II (Mulitze, 2004).…”

Section: Experimental Design and Phenotypic Evaluationmentioning

confidence: 99%

Selection of Bread Wheat for Low Grain Cadmium Concentration at the Seedling Stage Using Hydroponics versus Molecular Markers

Liu

Guttieri²,

Waters

et al. 2019

Crop Science

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The excessive accumulation of Cd in harvested crops grown on high‐Cd soils has increased public concerns for food safety. Due to the high consumption of bread wheat (Triticum aestivum L.) per capita, high concentrations of Cd in wheat grain can significantly affect human health. Breeding is a promising way to reduce grain Cd concentration. However, a lack of efficient selection methods impedes breeding for low grain Cd concentration in bread wheat. In this study, a recombinant inbred population segregating for grain Cd concentration was used to assess the efficacy of two selection methods for decreasing grain Cd concentration in bread wheat: a hydroponic selection method used shoot Cd concentration in 2‐wk‐old seedlings growing in Cd‐containing medium, and a marker‐based selection method using markers linked to heavy metal transporting P1B‐ATPase 3 (HMA3), the gene underlying Cdu1. Both methods effectively selected low‐Cd lines. The HMA3‐linked marker‐based selection was superior to hydroponic selection in terms of both simplicity and response to selection. The HMA3‐linked markers explained 20% of the phenotypic variation in grain Cd concentration with an additive effect of 0.014 mg kg−1. The hydroponic selection and marker‐based selection may target two different and independent processes controlling grain Cd accumulation, and they had no effect on grain Zn and Fe concentrations. The ALMT1‐UPS4 marker associated with Al tolerance was not associated with grain Cd concentration but increased grain Zn and Fe concentrations. The 193‐bp allele of the Rht8‐associated marker, GWM261, was associated with increased grain Cd concentration.

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“…On the one hand, fungicide could decrease mineral element concentrations because of increased yields. On the other hand, higher concentrations of elements could occur if the application of fungicide extends the grain filling stage, thereby enabling more mineral elements to be deposited into the grains [38].…”

Section: Introductionmentioning

confidence: 99%

Effects of foliar fungicide on yield, micronutrients, and cadmium in grains from historical and modern hard winter wheat genotypes

et al. 2021

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Plant breeding and disease management practices have increased the grain yield of hard winter wheat (Triticum aestivum L.) adapted to the Great Plains of the United States during the last century. However, the effect of genetic gains for seed yield and the application of fungicide on the micronutrient and cadmium (Cd) concentration in wheat grains is still unclear. The objectives of this study were to evaluate the effects of fungicide application on the productivity and nutritional quality of wheat cultivars representing 80 years of plant breeding efforts. Field experiments were conducted over two crop years (2017 and 2018) with eighteen hard winter wheat genotypes released between 1933 and 2013 in the presence or absence of fungicide application. For each growing season, the treatments were arranged in a split-plot design with the fungicide levels (treated and untreated) as the whole plot treatments and the genotypes as split-plot treatments in triplicate. The effects on seed yield, grain protein concentration (GPC), micronutrients, phytic acid, and Cd in grains were measured. While the yield of wheat was found to increase at annualized rates of 26.5 and 13.0 kg ha-1 yr-1 in the presence and absence of fungicide (P < 0.001), respectively, GPC (-190 and -180 mg kg-1 yr-1, P < 0.001), Fe (-35.0 and -44.0 μg kg-1 yr-1, P < 0.05), and Zn (-68.0 and -57.0 μg kg-1 yr-1, P < 0.01) significantly decreased during the period studied. In contrast to the other mineral elements, grain Cd significantly increased over time (0.4 μg kg-1 yr-1, P < 0.01) in the absence of fungicide. The results from this study are of great concern, as many mineral elements essential for human nutrition have decreased over time while the toxic heavy metal, Cd, has increased, indicating modern wheats are becoming a better vector of dietary Cd.

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Cadmium concentration in terminal tissues as tools to select low-cadmium wheat

Cited by 15 publications

References 41 publications

Integrated transcriptome and metabonomic analysis of key metabolic pathways in response to cadmium stress in novel buckwheat and cultivated species

Integrated transcriptome and metabonomic analysis of key metabolic pathways in response to cadmium stress in novel buckwheat and cultivated species

Selection of Bread Wheat for Low Grain Cadmium Concentration at the Seedling Stage Using Hydroponics versus Molecular Markers

Effects of foliar fungicide on yield, micronutrients, and cadmium in grains from historical and modern hard winter wheat genotypes

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