Improved Cd, Zn and Mn tolerance and reduced Cd accumulation in grains with wheat-based cell number regulator TaCNR2

Qiao, Kun; Wang, Fanhong; Liang, Shuang; Wang, Hong; Hu, Zhangli; Chai, Tuanyao

doi:10.1038/s41598-018-37352-6

Cited by 46 publications

(29 citation statements)

References 32 publications

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“…They found that the expression level of AtPCR1 and OsFWL4 was closely related with Cd contents in plants and yeast, respectively. Qiao et al also found that overexpression of wheat cell number regulator 2 (TaCNR2) which contained the CC/LXXXXCPC conserved motif could increase the Cd tolerance and change the Cd translocation from roots to shoots in rice [42]. In addition, our early bioinformatics prediction showed that OsPCR1 and OsPCR3 were mainly located in Cytoplasm or periplasm and contained the CC/LXXXXCPC conserved motif.…”

Section: Discussionmentioning

confidence: 83%

A novel family of PLAC8 motif-containing/PCR genes mediates Cd tolerance and Cd accumulation in rice

et al. 2019

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Background: Cd is one of the highly toxic heavy metals to most organisms, including humans and plants, and Cd-contaminated rice from China has become a global food safety issue. The early prediction of OsPCR (the plant cadmium resistance protein) which contained a PLAC8 domain was related with the accumulation of Cd in rice. To further understand the biological function of the OsPCR genes on the Cd tolerance and Cd accumulation in rice, we used a low grain-Cd-accumulating rice (xiushui 11) and a high grain-Cd-accumulating rice (xiushui 110) varieties to analyze the relationship between the expression levels of the two most abundant expression genes (OsPCR1 and OsPCR3) and the Cd concentrations in different tissues at different growth periods during Cd stress, and transgenic experiments of OsPCR1 and OsPCR3 were carried out. Results: OsPCR1 and OsPCR3 were closely related with Cd accumulation. Overexpression of OsPCR1 and OsPCR3 could not only increase the Cd tolerance, but also decrease the Cd accumulation obviously in different parts of the transgenic rice plants (especially in the rice grains), while the RNAi expression plants showed the opposite results. Conclusions: These results indicate that OsPCR1 and OsPCR3 play critical roles in Cd accumulation in rice, which provides a theoretical basis for the safe production of rice.

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Section: Discussionmentioning

confidence: 83%

A novel family of PLAC8 motif-containing/PCR genes mediates Cd tolerance and Cd accumulation in rice

et al. 2019

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“…Heavy metal ATPases (HMAs) may transport heavy metals across membranes and have a vital role in translocating Zn/Cd from plant roots to shoots [39]. Such integral membrane proteins apply the energy provided by ATP hydrolysis to transport metals across membranes [40].…”

Section: Cadmium Entry Into Shoots and Grainsmentioning

confidence: 99%

Cadmium Uptake by Wheat (Triticum aestivum L.): An Overview

Abedi

Mojiri

2020

Plants

133

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Cadmium is a toxic heavy metal that may be detected in soils and plants. Wheat, as a food consumed by 60% of the world’s population, may uptake a high quantity of Cd through its roots and translocate Cd to the shoots and grains thus posing risks to human health. Therefore, we tried to explore the journey of Cd in wheat via a review of several papers. Cadmium may reach the root cells by some transporters (such as zinc-regulated transporter/iron-regulated transporter-like protein, low-affinity calcium transporters, and natural resistance-associated macrophages), and some cation channels or Cd chelates via yellow stripe 1-like proteins. In addition, some of the effective factors regarding Cd uptake into wheat, such as pH, organic matter, cation exchange capacity (CEC), Fe and Mn oxide content, and soil texture (clay content), were investigated in this paper. Increasing Fe and Mn oxide content and clay minerals may decrease the Cd uptake by plants, whereas reducing pH and CEC may increase it. In addition, the feasibility of methods to diminish Cd accumulation in wheat was studied. Amongst agronomic approaches for decreasing the uptake of Cd by wheat, using organic amendments is most effective. Using biochar might reduce the Cd accumulation in wheat grains by up to 97.8%.

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“…Because its active nature of migration, low critical concentration and easy accumulation of poisoning, Cd is one of the most threatening elements for environment and human health 6 , 7 , and it has been identified as Class IA carcinogen by International Agency for Research on Cancer. it is also an unnecessary and undegradable element for plants 8 , 9 . Angelova et al 10 showed that the accumulation of Cu, Zn, Pb, and Cd in cotton reached 20.44%, 19.70%, 21.72%, and 10.11%, although the concentration of Cd in cotton is lower than other heavy metals, small dose of Cd is extremely harmful to crops and humans.…”

Section: Introductionmentioning

confidence: 99%

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

Zhu

Wang

et al. 2020

Sci Rep

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Consistent use of large amounts of fertilizers, pesticides, and mulch can cause the accumulation of harmful substances in cotton plants. Among these harmful substances, cadmium (Cd), an undegradable element, stands out as being particularly highly toxic to plants. The objective of this study was to evaluate the ability of biochar (3%) and biofertilizer (1.5%) to decrease Cd uptake, increase cotton dry weight, and modulate the activities of photosynthetic and peroxidase (POD), superoxide dismutase (SOD), catalase enzyme (CAT) in cotton (Gossypium hirsutum L.) grown in Cd-contaminated soil (0, 1, 2, or 4 mg Cd kg−1 soil) in pots. These studies showed that, as expected, exogenous Cd adversely affects cotton chlorophyll and photosynthesis. However, biochar and biofertilizer increased cotton dry weight by an average of 16.82% and 32.62%, respectively. Meanwhile, biochar and biofertilizer decreased the accumulation of Cd in cotton organs, and there was a significant reduction in the amount of Cd in bolls (P < 0.05). Biochar and biofertilizer have a positive impact on cotton chlorophyll content, net photosynthesis, stomatal conductance, transpiration rate, and intercellular CO2 concentration. Thus, the addition of biochar and biofertilizer promote cotton growth. However, biochar and biofertilizer increased the SOD activity of leaves (47.70% and 77.21%), CAT activity of leaves (35.40% and 72.82%), SOD activity of roots (33.62% and 39.37%), and CAT activity of roots (36.91% and 60.29%), respectively, and the addition of biochar and biofertilizer decreased the content of MDA and electrolyte leakage rate. Redundancy analyses showed that biochar and biofertilizer also improved SOD and POD activities by reducing the heavy metal-induced oxidative stress in cotton and reducing Cd uptake in cotton organs. Therefore, biochar and biofertilizer have a positive effect on the growth of cotton.

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Improved Cd, Zn and Mn tolerance and reduced Cd accumulation in grains with wheat-based cell number regulator TaCNR2

Cited by 46 publications

References 32 publications

A novel family of PLAC8 motif-containing/PCR genes mediates Cd tolerance and Cd accumulation in rice

A novel family of PLAC8 motif-containing/PCR genes mediates Cd tolerance and Cd accumulation in rice

Cadmium Uptake by Wheat (Triticum aestivum L.): An Overview

Effects of biochar and biofertilizer on cadmium-contaminated cotton growth and the antioxidative defense system

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