State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
Environ Sci Pollut Res Int. 2021 Mar;28(11):13942-13954. doi: 10.1007/s11356-020-11642-x. Epub 2020 Nov 17.
Microcystins (MCs) in water for irrigation may damage crop growth and enter food chains to threaten human health. To evaluate the potential risk of irrigation water contaminated with MCs, we exposed rice at each of the seedling, booting, and filling stages to irrigation water spiked with MCs at 1, 10, 100, and 1000 μg/L for 7 days. Afterwards, all rice underwent a recovery (without MCs) till the harvest. Low MCs (1 or10 μg/L) during different rice growth stages did not affect its yield and nutritional quality and had no risk to human health. High-concentration MCs (100 or 1000 μg/L) during the seedling or booting stage caused a larger decrease in the nutritional quality and yield of rice grains than that during the filling stage. In addition, MCs at 100 μg/L during the booting stage or at 1000 μg/L during the filling stage potentially threatened human health. The effect of MCs on rice yield, quality, and health risk was associated with the MC concentration and rice growth stage. Irrigation water contaminated with moderate-concentration MCs should be of concern at the early growth stage of rice.
微囊藻毒素（MCs）存在于灌溉水中可能会损害作物生长，并进入食物链威胁人类健康。为了评估受 MCs 污染的灌溉水的潜在风险，我们将水稻分别在幼苗期、孕穗期和灌浆期暴露于浓度为 1、10、100 和 1000μg/L 的 MCs 污染的灌溉水中 7 天。之后，所有水稻在收获前都进行了（无 MCs）的恢复。在不同的水稻生长阶段，低浓度（1 或 10μg/L）的 MCs 不影响其产量和营养品质，对人类健康没有风险。高浓度（100 或 1000μg/L）的 MCs 在幼苗期或孕穗期会导致水稻籽粒的营养品质和产量下降幅度大于灌浆期。此外，孕穗期 100μg/L 的 MCs 或灌浆期 1000μg/L 的 MCs 可能对人类健康构成威胁。MCs 对水稻产量、品质和健康风险的影响与 MC 浓度和水稻生长阶段有关。在水稻生长的早期阶段，应关注受中浓度 MCs 污染的灌溉水。
