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Ammonium-nitrogen addition at the seedling stage does not reduce grain cadmium concentration in two common wheat (Triticum aestivum L.) cultivars.
Environ Pollut. 2021 Oct 01; 286:117575.EP

Abstract

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 Cd concentration in the high-Cd accumulator, Zhoumai 18 (ZM18), but dramatically increased that in the low-Cd accumulator, Yunmai 51 (YM51). Further analysis revealed that the effects of NH4+-N addition on whole-plant Cd absorption, root-to-shoot Cd translocation, and shoot-to-grain Cd remobilization were different between the two wheat cultivars. In ZM18, NH4+-N addition did not change whole-plant Cd absorption, but inhibited root-to-shoot Cd translocation and Cd remobilization from lower internodes, lower leaves, node 1, and internode 1 to grains via the down-regulation of yellow stripe-like transporters (YSL), zinc transporters (ZIP5, ZIP7, and ZIP10), and heavy-metal transporting ATPases (HMA2). This inhibition decreased the grain Cd content by 29.62%, which was consistent with the decrease of the grain dry weight by 23.26%, leading to unchanged grain Cd concentration in ZM18. However, in YM51, NH4+-N addition promoted continuous Cd absorption during grain filling, root-to-shoot Cd translocation and whole-plant Cd absorption. The absorbed Cd was directly transported to internode 1 via the xylem and then re-transported to grains via the phloem by up-regulated YSL, ZIP5, and copper transporters (COPT4). This promotion increased the grain Cd content by 245.35%, which was higher than the increased grain dry weight by 132.89%, leading to increased grain Cd concentration in YM51. Our findings concluded that the addition of NH4+-N fertilizer at the seedling stage is not suitable for reducing grain Cd concentration in common wheat cultivars.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

College of Resources, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China.

Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, Sichuan, China. Electronic address: wangyi@sicau.edu.cn.

MeSH

Ammonium CompoundsCadmiumCation Transport ProteinsEdible GrainEndoplasmic ReticulumNitrogenSeedlingsSoil PollutantsTriticumZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34130116

Citation

Cheng, Yiran, et al. "Ammonium-nitrogen Addition at the Seedling Stage Does Not Reduce Grain Cadmium Concentration in Two Common Wheat (Triticum Aestivum L.) Cultivars." Environmental Pollution (Barking, Essex : 1987), vol. 286, 2021, p. 117575.

Cheng Y, Yang T, Xiang W, et al. Ammonium-nitrogen addition at the seedling stage does not reduce grain cadmium concentration in two common wheat (Triticum aestivum L.) cultivars. Environ Pollut. 2021;286:117575.

Cheng, Y., Yang, T., Xiang, W., Li, S., Fan, X., Sha, L., Kang, H., Wu, D., Zhang, H., Zeng, J., Zhou, Y., & Wang, Y. (2021). Ammonium-nitrogen addition at the seedling stage does not reduce grain cadmium concentration in two common wheat (Triticum aestivum L.) cultivars. Environmental Pollution (Barking, Essex : 1987), 286, 117575. https://doi.org/10.1016/j.envpol.2021.117575

Cheng Y, et al. Ammonium-nitrogen Addition at the Seedling Stage Does Not Reduce Grain Cadmium Concentration in Two Common Wheat (Triticum Aestivum L.) Cultivars. Environ Pollut. 2021 Oct 1;286:117575. PubMed PMID: 34130116.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Ammonium-nitrogen addition at the seedling stage does not reduce grain cadmium concentration in two common wheat (Triticum aestivum L.) cultivars. AU - Cheng,Yiran, AU - Yang,Tian, AU - Xiang,Wenhui, AU - Li,Siyu, AU - Fan,Xing, AU - Sha,Lina, AU - Kang,Houyang, AU - Wu,Dandan, AU - Zhang,Haiqin, AU - Zeng,Jian, AU - Zhou,Yonghong, AU - Wang,Yi, Y1 - 2021/06/11/ PY - 2021/02/08/received PY - 2021/04/26/revised PY - 2021/06/08/accepted PY - 2021/6/16/pubmed PY - 2021/8/26/medline PY - 2021/6/15/entrez KW - Absorption KW - Ammonium-nitrogen KW - Cadmium KW - Remobilization KW - Wheat SP - 117575 EP - 117575 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 286 N2 - 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 Cd concentration in the high-Cd accumulator, Zhoumai 18 (ZM18), but dramatically increased that in the low-Cd accumulator, Yunmai 51 (YM51). Further analysis revealed that the effects of NH4+-N addition on whole-plant Cd absorption, root-to-shoot Cd translocation, and shoot-to-grain Cd remobilization were different between the two wheat cultivars. In ZM18, NH4+-N addition did not change whole-plant Cd absorption, but inhibited root-to-shoot Cd translocation and Cd remobilization from lower internodes, lower leaves, node 1, and internode 1 to grains via the down-regulation of yellow stripe-like transporters (YSL), zinc transporters (ZIP5, ZIP7, and ZIP10), and heavy-metal transporting ATPases (HMA2). This inhibition decreased the grain Cd content by 29.62%, which was consistent with the decrease of the grain dry weight by 23.26%, leading to unchanged grain Cd concentration in ZM18. However, in YM51, NH4+-N addition promoted continuous Cd absorption during grain filling, root-to-shoot Cd translocation and whole-plant Cd absorption. The absorbed Cd was directly transported to internode 1 via the xylem and then re-transported to grains via the phloem by up-regulated YSL, ZIP5, and copper transporters (COPT4). This promotion increased the grain Cd content by 245.35%, which was higher than the increased grain dry weight by 132.89%, leading to increased grain Cd concentration in YM51. Our findings concluded that the addition of NH4+-N fertilizer at the seedling stage is not suitable for reducing grain Cd concentration in common wheat cultivars. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/34130116/Ammonium_nitrogen_addition_at_the_seedling_stage_does_not_reduce_grain_cadmium_concentration_in_two_common_wheat__Triticum_aestivum_L___cultivars_ DB - PRIME DP - Unbound Medicine ER -