Sarfraz Wajiha, Farid Mujahid, Khalid Noreen, Rizvi Zarrin Fatima, Asam Zaki Ul Zaman, Nazir Aisha, Naeem Nayab, Farid Sheharyaar, Ali Shafaqat
Department of Botany, Government College Women University, Sialkot, Pakistan.
Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700 Pakistan.
Physiol Mol Biol Plants. 2022 Dec;28(11-12):2099-2110. doi: 10.1007/s12298-022-01265-6. Epub 2022 Dec 17.
Tannery industries discharge a high concentration of chromium (Cr) along with other heavy metals, which are hazardous for all life forms. With increasing shortage of freshwater, tannery effluent is frequently used for crop an irrigation, causing damage to plants' health. In order to address this challenge, amino acid chelate fertilizer was used to investigate the impact on wheat crops against tannery waste water. Tannery wastewater (TW) was used at different levels such as 0%, 25%, 50%, and 100% with an amendment of foliar Zn-lysine (Zn-lys) at30 mg/L. This research highlighted the positive correlation of Zn-lysine on the morpho-physiological, biochemical, and gas exchange traits under different levels of tannery wastewater. The findings of this study showed that the application of Cr-rich tannery wastewater at different treatment levels resulted in a significant reduction in plant height (23%, 31%, and 36%), the number of tillers (21%, 30%, and 43%), spike (19%, 36%, and 55%) and dry weight (DW) of grains (10%, 25%, and 49%) roots DW (17%, 41%, 56%), and shoots DW (22%, 32%, and 47%) as compared to control. Foliar-applied Zn-lys positively enhanced photosynthetic attributes, antioxidant enzymes activities and gas exchange traits by reducing the oxidative stress alone and under Cr stress. The concentration of Cr in roots (21%, 37%, 38%) and shoots (11%, 36%, 37%) was reduced by the foliar application of Zn-lys at different treatment levels. These findings conclude that Zn-lys served as a protector for the growth and development of wheat and has an incredible potential to inhibit the phytotoxicity induced by excess Cr.
The online version contains supplementary material available at 10.1007/s12298-022-01265-6.
制革工业排放高浓度的铬（Cr）以及其他重金属，这些对所有生命形式都有害。随着淡水短缺的加剧，制革厂废水经常用于农作物灌溉，对植物健康造成损害。为应对这一挑战，使用氨基酸螯合肥料研究其对小麦作物抵御制革厂废水的影响。以不同水平（0%、25%、50%和100%）使用制革厂废水，并添加30mg/L的叶面锌赖氨酸（Zn-lys）。本研究强调了在不同水平的制革厂废水条件下，锌赖氨酸与形态生理、生化和气体交换性状之间的正相关关系。本研究结果表明，在不同处理水平下施用富含铬的制革厂废水会导致株高（分别降低23%、31%和36%）、分蘖数（分别降低21%、30%和43%）、穗数（分别降低19%、36%和55%）以及籽粒干重（DW）（分别降低10%、25%和49%）、根干重（分别降低17%、41%、56%）和地上部干重（分别降低22%、32%和47%），与对照相比均显著降低。叶面喷施锌赖氨酸通过单独减轻氧化应激以及在铬胁迫下减轻氧化应激，积极增强了光合特性、抗氧化酶活性和气体交换性状。在不同处理水平下，叶面喷施锌赖氨酸降低了根（分别降低21%、37%、38%）和地上部（分别降低11%、36%、37%）中的铬浓度。这些发现得出结论，锌赖氨酸对小麦的生长发育起到了保护作用，并且在抑制过量铬诱导的植物毒性方面具有巨大潜力。
在线版本包含可在10.1007/s12298-022-01265-6获取的补充材料。
