Introducing zinc (Zn) biofortified vegetables capable to thrive on Zn-polluted soils might simultaneously solve both the problems of dietary Zn deficiency and environmental Zn pollution. White mustard (Sinapis alba L.) is known to thrive on soils with high Zn concentrations, thus we aimed to determine to what extent it has physiological characteristics close to known Zn hyperaccumulators for possible use of this species in phytoremediation efforts and production of Zn-biofortified crops. To achieve this, in a pot experiment plants were grown for 7 weeks in soils with normal (25.5 mg kg⁻¹) and excess (500 and 1000 mg kg⁻¹) Zn concentrations and assessed for metal accumulation, enrichment, translocation and tolerance. Zn accumulated mainly in shoots (861 mg kg⁻¹) with translocation factor of 2.5 in parallel with enhanced root H⁺-ATPase activity but the plant Zn bioconcentration factors were less than one. Excess soil Zn increased plant biomass and activities of some reactive oxygen species scavenging enzymes without any effects on root lipid peroxidation or leaf chlorophyll contents. Despite lack of criteria for a true Zn hyperaccumulator, white mustard exhibited significant Zn trans-location capacity with tolerance to toxic Zn concentrations in tissues as reflected from its efficient antioxidant metabolism, unaltered photosynthetic pigments under excess Zn and high aboveground biomass similar to some Zn hyperaccmulators. Accordingly, the cultivation of this species has the dual advantages of phytoremediating Zn-contaminated soils and producing Zn-biofortified vegetables.

引入能够在受锌污染的土壤上壮成长的锌（Zn）生物强化蔬菜可以同时解决饮食中锌缺乏和环境锌污染的问题。众所周知，白芥子（Sinapis alba L.）在高锌含量的土壤中会繁盛，因此我们的目标是确定白芥子在何种程度上具有与已知的锌超富集物质接近的生理特性，以便在植物修复和生产Zn-的过程中使用该种。生物强化作物。为此，在盆栽实验中，将植物在锌浓度正常（25.5 mg kg ^-1）和锌浓度过量（500和1000 mg kg ^-1）的土壤中生长7周，并评估其金属积累，富集，易位和耐受性。锌主要在芽中积累（861 mg / kg^-1）的转运因子为2.5，同时根H ⁺增强-ATPase活性，但植物锌的生物富集因子小于1。过量的土壤锌增加了植物的生物量和某些活性氧清除酶的活性，而对根脂质过氧化或叶绿素含量没有任何影响。尽管缺乏用于真正的锌超富集的标准，但白芥菜仍表现出显着的锌转运能力，对组织中的毒性锌浓度具有耐受性，这是由于其有效的抗氧化剂代谢，过量锌下未改变的光合色素和类似于某些锌超富集的高地上生物量。因此，该物种的种植具有植物修复锌污染土壤和生产锌生物强化蔬菜的双重优势。