Comparison study of zinc nanoparticles and zinc sulphate on wheat growth: From toxicity and zinc biofortification
Comparison study of zinc nanoparticles and zinc sulphate on wheat growth: From toxicity and zinc biofortification
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纳米锌和硫酸锌对小麦生长的比较研究：毒性和锌生物强化。
DOI：
10.1016/j.chemosphere.2019.03.168
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发表时间：
2019-07-01
期刊：
影响因子：
8.8
通讯作者：
Mao, Hui
中科院分区：
文献类型：
--
作者：
Du, Wei;Yang, Jingya;Mao, Hui
由于其特殊的物理化学性质，纳米氧化锌被认为是一种缓解人类饮食中锌缺乏的潜在解决方案。然而，关于NP处理作物的食品质量和安全的信息有限。通过发芽和盆栽试验，研究了纳米氧化锌和硫酸锌对普通小麦L种子萌发和生长的影响。结果表明，氮肥处理显著提高了小麦体内锌含量，提高籽粒锌含量的效果优于硫酸锌，但对提高叶片锌含量的效果较差，在小麦组织中未检测到锌纳米颗粒。中等剂量的纳米氧化锌和硫酸锌均能增加籽粒产量和生物量。与对照相比，纳米氧化锌和硫酸锌处理的小麦最大籽粒产量和生物量分别提高了56%、63%和55%、72%。从对种子萌发、根长、地上部长度和幼苗干生物量的抑制效应来看，高剂量下，锌的毒性大于纳米氧化锌。硫酸锌处理的根系结构损伤和酶活性变化大于纳米氧化锌处理。结果表明，在本实验条件下使用的氧化锌纳米颗粒不会对人体产生纳米级的危害。(C)2019爱思唯尔有限公司。保留所有权利。
ZnO nanoparticles (NPs) are studied as a potential solution to alleviate Zn deficiency in human diet due to their special physicochemical properties. However, information for food quality and safety in NP-treated crops is limited. The effects of ZnO NPs and ZnSO4 on germination and growth of wheat (Trifle -um aestivum L) were studied in germination and pot experiments. Zn content increased significantly, ZnO NPs were more effective than ZnSO4 at increasing grain Zn content, but less effective at increasing leaf Zn, and no ZnO NPs were detected in the wheat tissues by NP-treatments, indicated by XRD. Both ZnO NPs and ZnSO4 at moderate doses increased grain yield and biomass. Compared with control, the maximum grain yield and biomass of wheat treated with ZnO NPs and ZnSO4 were increased by 56%, 63% and 55%, 72%, respectively. ZnSO4 was more toxic than ZnO NPs at high doses as measured by the inhibitory effects in seed germination, root length, shoot length and dry biomass of seedlings. Structural damage in roots and variation in enzyme activities were greater with ZnSO4 than with ZnO NPs. ZnO NPs did not cause toxicity different from that of ZnSO4, which indicates that ZnO NPs used under the current experimental conditions did not cause Nano specific risks. (C) 2019 Elsevier Ltd. All rights reserved.