The present study evaluated arsenic (As) remediation capacity of Vetiveria. zizanoides plants from artificially contaminated soil (0, 50, 100, 250, 500, 1000 mg kg⁻¹) after various durations ie. 30, 60 and 90 d. Plants were found effective, maximum As removal being 71% after 90 d when grown in 50 mg kg⁻¹ As. Plant growth was not affected at lower As levels (up to 250 mg kg⁻¹) and V. zizanoides plants grown at 50 mg kg⁻¹ have shown increase in number of tillers (43%), biomass (30%) and plant height (26%) compared to control after 90 days. Thiobarbituric acid reactive metabolites (TBARM) content has not shown any change in As exposed plants up to 30 d, maximum increase in TBARM content was found in roots and shoots of the V. zizanoides plants as 84% and 79% after 90 d when grown at 1000 mg kg⁻¹ As contaminated plot. The activities of antioxidant enzymes, superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase and catalase were found to increase in response to As stress in a coordinated manner. Besides, various non- enzymatic antioxidants also provided defense to plants against As stress. High As accumulation and tolerance potential of V. zizanoides from artificially contaminated soil coupled with large biomass and root system, suggests its feasibility for the revegatation/remediation of As contaminated soils of West Bengal (India).

本研究评估了香根草的砷（As）修复能力。在不同的持续时间后，zizanoides从人工污染的土壤（0、50、100、250、500、1000 mg kg ^-1）种植。30、60和90 d。发现在50 mg kg ^-1 As下生长90 d后，植物有效，最大As去除率为71％。在较低的As水平下（高达250 mg kg ^-1），植物生长不受影响；在50 mg kg ^{-1的条件下}生长的V. zizanoides植物在90天后，与对照相比，已显示分（数量（43％），生物量（30％）和株高（26％）增加。硫代巴比妥酸反应性代谢产物（TBARM）的含量未显示任何变化。暴露的植物长达30 d时，在生长90 d后，zizanoides的根和茎中TBARM含量最大增加，分别为84％和79％。在1000 mg kg ^-1下作为被污染的地块。发现抗氧化酶，超氧化物歧化酶，抗坏血酸过氧化物酶，愈创木酚过氧化物酶和过氧化氢酶的活性以协调的方式响应于As胁迫而增加。此外，各种非酶抗氧化剂也为植物抵抗砷胁迫提供了防御。V. zizanoides的高As积累和耐受潜力 人工污染的土壤，加上大量的生物量和根系，表明其对西孟加拉邦（印度）的砷污染土壤进行重新污染/修复的可行性。