Natural Variation OsCd1V449 Contributes to Reducing Cadmium Accumulation in Rice Grain

Huili Yan; Wenxiu Xu; Jianyin Xie; Yiwei Gao; Lulu Wu; Liang Sun; Xu Chen; Tian Zhang; Changhua Dai; Xiuni Lin; Lu Feng; Xueqiang Wang; Fengmei Li; Xiaoyang Zhu; Jinjie Li; Zichao Li; Caiyan Chen; Mi Ma; Hongliang Zhang; Zhenyan He

doi:10.20944/preprints201802.0075.v1

How to cite: Yan, H.; Xu, W.; Xie, J.; Gao, Y.; Wu, L.; Sun, L.; Chen, X.; Zhang, T.; Dai, C.; Lin, X.; Feng, L.; Wang, X.; Li, F.; Zhu, X.; Li, J.; Li, Z.; Chen, C.; Ma, M.; Zhang, H.; He, Z. Natural Variation OsCd1^V449 Contributes to Reducing Cadmium Accumulation in Rice Grain. Preprints 2018, 2018020075. https://doi.org/10.20944/preprints201802.0075.v1 Yan, H.; Xu, W.; Xie, J.; Gao, Y.; Wu, L.; Sun, L.; Chen, X.; Zhang, T.; Dai, C.; Lin, X.; Feng, L.; Wang, X.; Li, F.; Zhu, X.; Li, J.; Li, Z.; Chen, C.; Ma, M.; Zhang, H.; He, Z. Natural Variation OsCd1V449 Contributes to Reducing Cadmium Accumulation in Rice Grain. Preprints 2018, 2018020075. https://doi.org/10.20944/preprints201802.0075.v1

Abstract

Cadmium accumulation in rice grain poses a serious threat to people’s health. Understanding the genetic basis on grain cadmium accumulation facilitates efforts to reduce it. Here, we show that OsCd1 is involved in Cd uptake and contributes to grain accumulation in rice. Natural variation in OsCd1 with a missense mutation Val449Asp is responsible for the divergence of rice grain cadmium accumulation between japonica and indica. Notably, near-isogenic line tests confirmed that the indica variety carrying the OsCd1^V449 allele could reduce the grain cadmium accumulation. The favorable allele OsCd1^V449 may be an important genetic resource to reduce grain cadmium accumulation for indica.

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Natural Variation OsCd1V449 Contributes to Reducing Cadmium Accumulation in Rice Grain

Abstract

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Natural Variation OsCd1^V449 Contributes to Reducing Cadmium Accumulation in Rice Grain