title: Effect of Arbuscular Mycorrhizal Fungi On Yield and Phytoremediation Performance of Pot Marigold (Calendula officinalis L.) Under Heavy Metals Stress.
abstract: In order to study the effect of mycorrhizal fungi (inoculated and non-inoculated) and heavy metals stress [0, Pb (150 and 300 mg/kg) and Cd (40 and 80 mg/kg)] on pot marigold (Calendula officinalis L.), a factorial experiment was conducted based on a randomized complete block design with 4 replications in Research Greenhouse of Department of Horticultural Sciences, University of Tehran, Iran, during 2012-2013. Plant height, herbal and flower fresh and dry weight, root fresh and dry weight and root volume, colonization percentage, total petal extract, total petal flavonoids, root and shoot P and K uptakes, and Pb and Cd accumulations in root and shoot were measured. Results indicated that with increasing soil Pb and Cd concentration, growth and yield of pot marigold was reduced significantly; Cd had greater negative impacts than Pb. However, mycorrhizal fungi alleviated these impacts by improving plant growth and yield. Pot marigold concentrated high amounts of Pb and especially Cd in its roots and shoots; mycorrhizal plants had a greater accumulation of these metals, so that those under 80 mg/kg Cd soil(-1) accumulated 833.3 and 1585.8 mg Cd in their shoots and roots, respectively. In conclusion, mycorrhizal fungi can improve not only growth and yield of pot marigold in heavy metal stressed condition, but also phytoremediation performance by increasing heavy metals accumulation in the plant organs.
authors.affiliation: a Department of Horticultural Sciences , Faculty of Agricultural Sciences and Engineering, College of Agriculture and Natural Resources, University of Tehran , Karaj , Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Tabrizi
authors.affiliation: a Department of Horticultural Sciences , Faculty of Agricultural Sciences and Engineering, College of Agriculture and Natural Resources, University of Tehran , Karaj , Iran.
authors.forename: Siavash
authors.initials: S
authors.lastname: Mohammadi
authors.affiliation: a Department of Horticultural Sciences , Faculty of Agricultural Sciences and Engineering, College of Agriculture and Natural Resources, University of Tehran , Karaj , Iran.
authors.forename: Mojtaba
authors.initials: M
authors.lastname: Delshad
authors.affiliation: b Department of Soil Science , Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran , Karaj , Iran.
authors.forename: Babak
authors.initials: B
authors.lastname: Moteshare Zadeh
mesh_terms: D001673:Biodegradation, Environmental; D002104:Cadmium / Q000494:pharmacology*; D020838:Calendula / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007854:Lead / Q000494:pharmacology*; D038821:Mycorrhizae / Q000378:metabolism*; D012989:Soil Pollutants / Q000494:pharmacology*
chemical_list: D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead
keywords: abiotic stress; biological input; heavy metal accumulation; medicinal plant