title: [Effects of ryegrass and arbuscular mycorrhiza on activities of antioxidant enzymes, accumulation and chemical forms of cadmium in different varieties of tomato].
abstract: Pot experiments were carried out to investigate the effects of ryegrass and arbuscular mycorrhiza on the plant growth, malondialdehyde (MDA), antioxidant enzyme activities of leaf and root, accumulation and chemical forms of cadmium (Cd) in tow varieties of tomato when exposed to Cd (20 mg x kg(-1)). The results showed that dry weights of fruit and plant, and contents of malondialdehyde (MDA) and antioxidant enzyme activities of leaf and root, and concentrations and accumulations of Cd significantly differed between two varieties of tomato. Dry weights of fruit, roots, stem, leaf and plant were increased by single or combined remediation of ryegrass and arbuscular mycorrhiza, while MDA contents and antioxidant enzyme activities of leaf and root reduced. The total extractable Cd, F(E), F(W), F(NaCl), F(HAc), F(HCl), and F(R) in fruit of two varieties of tomato reduced by 19.4% - 52.4%, 31.0% - 75.2%, 19.7% - 59.1%, 3.1% - 48.2%, 20.0% - 65.0%, 40.7% - 100.0% and 15.2% - 50.0%, respectively. Cadmium accumulations in tomato were in the order of leaf > stem > fruit > root. Cadmium concentrations in leaf, stem, root and fruit of both varieties decreased by single or combined remediation of ryegrass and arbuscular mycorrhiza, and Cd accumulations of stem and plant of two varieties also reduced. Cd accumulations in fruit of two varieties decreased by 42.9% and 43.7% in the combined remediation treatments, respectively. Tolerance and resistance of 'LUO BEI QI' on Cd was more than 'De Fu mm-8', and Cd concentrations and Cd accumulations in fruit and plant were in the order of 'LUO BEI QI' < 'De Fu mm-8' in the presence or absence of single or combined remediation of ryegrass and arbuscular mycorrhiza.
authors.forename: Ling
authors.initials: L
authors.lastname: Jiang
authors.forename: Yun
authors.initials: Y
authors.lastname: Yang
authors.forename: Wei-Hong
authors.initials: WH
authors.lastname: Xu
authors.forename: Chong-Li
authors.initials: CL
authors.lastname: Wang
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
authors.forename: Shi-Juan
authors.initials: SJ
authors.lastname: Xiong
authors.forename: Wen-Wen
authors.initials: WW
authors.lastname: Xie
authors.forename: Jin-Zhong
authors.initials: JZ
authors.lastname: Zhang
authors.forename: Zhi-Ting
authors.initials: ZT
authors.lastname: Xiong
authors.forename: Zheng-Yin
authors.initials: ZY
authors.lastname: Wang
authors.forename: De-Ti
authors.initials: DT
authors.lastname: Xie
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D002104:Cadmium / Q000737:chemistry*; D008129:Lolium; D018551:Solanum lycopersicum / Q000187:drug effects / Q000201:enzymology* / Q000382:microbiology*; D008315:Malondialdehyde / Q000737:chemistry; D038821:Mycorrhizae; D018515:Plant Leaves / Q000201:enzymology; D018517:Plant Roots / Q000201:enzymology
chemical_list: D000975:Antioxidants; D002104:Cadmium; D008315:Malondialdehyde