New Biofortification Tool: Wheat TaCNR5 Enhances Zinc and Manganese Tolerance and Increases Zinc and Manganese Accumulation in Rice Grains

• DOI: 10.1021/acs.jafc.9b04210
• Publication Date: 2019-08-09T20:16:16Z
• Authors: Kun Qiao; Fanhong Wang; Shuang Liang; Hong Wang; Zhangli Hu; Tuanyao Chai
• Keywords: Biofortification

Heavy metal contaminants and nutrient deficiencies in soil negatively affect crop growth human health. The plant cadmium resistance (PCR) protein transports heavy metals. abundance of PCR is correlated with that cell number regulator (CNR) protein, the two proteins have similar conserved domains. Hence, CNR might also participate transport. We isolated analyzed TaCNR5 from wheat (Triticum aestivum). expression level shoots increased under (Cd), zinc (Zn), or manganese (Mn) treatments. Transgenic plants expressing showed enhanced tolerance to Zn Mn. Overexpression Arabidopsis Cd, Zn, Mn translocation roots shoots. concentrations rice grains were transgenic TaCNR5. These roles distribution metals mean it has potential as a genetic biofortification tool fortify cereal micronutrients.