Preprint Article Version 1 This version is not peer-reviewed

Natural Variation OsCd1V449 Contributes to Reducing Cadmium Accumulation in Rice Grain

Version 1 : Received: 7 February 2018 / Approved: 9 February 2018 / Online: 9 February 2018 (07:13:17 CET)

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 OsCd1V449 Contributes to Reducing Cadmium Accumulation in Rice Grain. Preprints 2018, 2018020075 (doi: 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 (doi: 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 OsCd1V449 allele could reduce the grain cadmium accumulation. The favorable allele OsCd1V449 may be an important genetic resource to reduce grain cadmium accumulation for indica.

Subject Areas

OsCd1; Cadmium accumulation; rice grain; indica; japonica; GWAS

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