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H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity.
Int J Mol Sci. 2017 Oct 01; 18(10)IJ

Abstract

Cadmium (Cd) and excess copper (Cu) are toxic to plants, causing a wide range of deleterious effects including the formation of reactive oxygen species. Metallothioneins (MTs) may protect plant cells from heavy metal toxicity by chelating heavy metals via cysteine thiol groups. They may also function as antioxidants. The study investigated the relationship of H₂O₂ production and ricMT expression in rice radicles and rice suspension cells under Cu or Cd stress. The results showed that H₂O₂ production in the rice radicles increased before Cu-induced ricMT expression, and after Cd-induced ricMT expression. Rice suspension cells of sense- and antisense-ricMT transgenic lines were obtained by an Agrobacterium-mediated transformation. Overexpression of ricMT significantly decreased the death rate of rice cells, which was accompanied by blocked H₂O₂ accumulation in rice suspension cells subject to Cu and Cd stress. Our findings confirm that H₂O₂ is involved in the MT-mediated tolerance of Cu and Cd toxicity in rice.

Authors+Show Affiliations

College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. zhanghx21@126.com.College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. lvshufang780515@sina.com.College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. xhwcyn@163.com.College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. dianyun518@163.com.College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. lyj@haust.edu.cn.College of Agriculture, Henan University of Science and Technology, Luoyang 471023, China. wangfayuan@qust.edu.cn. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China. wangfayuan@qust.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28974021

Citation

Zhang, Hongxiao, et al. "H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity." International Journal of Molecular Sciences, vol. 18, no. 10, 2017.
Zhang H, Lv S, Xu H, et al. H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity. Int J Mol Sci. 2017;18(10).
Zhang, H., Lv, S., Xu, H., Hou, D., Li, Y., & Wang, F. (2017). H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity. International Journal of Molecular Sciences, 18(10). https://doi.org/10.3390/ijms18102083
Zhang H, et al. H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity. Int J Mol Sci. 2017 Oct 1;18(10) PubMed PMID: 28974021.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - H₂O₂ Is Involved in the Metallothionein-Mediated Rice Tolerance to Copper and Cadmium Toxicity. AU - Zhang,Hongxiao, AU - Lv,Shufang, AU - Xu,Huawei, AU - Hou,Dianyun, AU - Li,Youjun, AU - Wang,Fayuan, Y1 - 2017/10/01/ PY - 2017/09/05/received PY - 2017/09/27/revised PY - 2017/09/27/accepted PY - 2017/10/5/entrez PY - 2017/10/5/pubmed PY - 2018/5/31/medline KW - Cd stress KW - Cu stress KW - H2O2 KW - ricMT KW - rice suspension cells JF - International journal of molecular sciences JO - Int J Mol Sci VL - 18 IS - 10 N2 - Cadmium (Cd) and excess copper (Cu) are toxic to plants, causing a wide range of deleterious effects including the formation of reactive oxygen species. Metallothioneins (MTs) may protect plant cells from heavy metal toxicity by chelating heavy metals via cysteine thiol groups. They may also function as antioxidants. The study investigated the relationship of H₂O₂ production and ricMT expression in rice radicles and rice suspension cells under Cu or Cd stress. The results showed that H₂O₂ production in the rice radicles increased before Cu-induced ricMT expression, and after Cd-induced ricMT expression. Rice suspension cells of sense- and antisense-ricMT transgenic lines were obtained by an Agrobacterium-mediated transformation. Overexpression of ricMT significantly decreased the death rate of rice cells, which was accompanied by blocked H₂O₂ accumulation in rice suspension cells subject to Cu and Cd stress. Our findings confirm that H₂O₂ is involved in the MT-mediated tolerance of Cu and Cd toxicity in rice. SN - 1422-0067 UR - https://www.unboundmedicine.com/medline/citation/28974021/H₂O₂_Is_Involved_in_the_Metallothionein_Mediated_Rice_Tolerance_to_Copper_and_Cadmium_Toxicity_ DB - PRIME DP - Unbound Medicine ER -