کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4381909 | 1617787 | 2015 | 11 صفحه PDF | دانلود رایگان |
• We evaluated the effect of Rhizophagus clarus and vermicompost in Cu phytoremediation;
• R. clarus and vermicompost reduce oxidative and photochemical damage of Cu on plants;
• R. clarus and vermicompost increases the absorption of nutrients and plant growth;
• R.clarus and vermicompost enhances the phytostabilization Cu in sandy soils.
Arbuscular mycorrhizal fungi and vermicompost may decrease the deleterious effects of copper on plants. The goal of the present study was to evaluate the effect of inoculation with the fungus Rhizophagus clarus and the addition of grape bagasse vermicompost on phytoremediation by Canavalia ensiformis of a sandy soil with high Cu concentration. Soil was contaminated with 100 mg Cu kg−1, fertilized with vermicompost at levels equivalent to 0, 10, 20, 40 and 80 mg P kg−1, and cultivated with C. ensiformis with and without inoculation with R. clarus. Availability of Cu and other nutrients in the soil and in the soil solution, shoot and root accumulation of Cu and other nutrients, plant growth, and Cu phytotoxicity—using photochemical efficiency, concentration of photosynthetic pigments, and oxidative stress enzyme activities as indicators of Cu phytotoxicity—were evaluated. Phytostabilization showed better performance with the addition of the vermicompost level equivalent to 20 mg P kg−1 and in the presence of R. clarus. Phytoextraction was higher with the addition of the vermicompost level equivalent to 40 mg P kg−1 and without R. clarus inoculation. However, C. ensiformis was not a good phytoextractor because less than 100 mg Cu kg−1 accumulated in the shoot. The system C. ensiformis–vermicompost–R. clarus exhibited potential for Cu phytostabilization in sandy soils.
Journal: Applied Soil Ecology - Volume 96, November 2015, Pages 172–182