In the present study, the effects of elevated zinc concentrations on germination, physiological and biochemical parameters were investigated in basil (Ocimum basilicum L.). Results indicate that zinc excess (1–5 mM ZnSO₄) did not affect germination process, but it drastically reduced vigor index and radicle elongation, and induced oxidative stress. Exposure of basil plants to 400 and 800 µM Zn decreased aerial parts and roots dry biomass, root length and leaf number. Under these conditions, the reduction of plant growth was associated with the formation of branched and abnormally shaped brown roots. Translocation factor < 1 and bioconcentration factor > 1 was observed for 100 µM Zn suggested the possible use of basil as a phytostabiliser. Excess of Zn supply (> 100 µM) decreased chlorophyll content, total phenol and total flavonoid contents. Additionally, an increased TBARS levels reflecting an oxidative burst was observed in Zn-treated plants. These findings suggest that excess Zn adversely affects plant growth, photosynthetic pigments, phenolic and flavonoid contents, and enhances oxidative stress in basil plants.

在本研究中，研究了锌浓度升高对罗勒（Ocimum basilicum L.）的发芽，生理和生化参数的影响。结果表明，锌过量（1-5 mM ZnSO ₄）不会影响发芽过程，但会大大降低活力指数和胚根伸长，并诱导氧化应激。罗勒植物暴露于400和800 µM Zn会减少地上部分，使根系干生物量，根长和叶数减少。在这些条件下，植物生长的减少与分支状和形状异常的棕色根的形成有关。对于100 µM Zn，观察到易位因子<1和生物富集因子> 1，这表明可能将罗勒用作植物稳定剂。供应过量的锌（> 100 µM）会降低叶绿素含量，总酚和总黄酮含量。另外，在锌处理的植物中观察到反映氧化爆发的TBARS水平升高。这些发现表明，过量的锌会对植物的生长，光合色素，