Antimony accumulation and antioxidative responses in four fern plants

Abstract

Antimony (Sb) toxicity and contamination has become a growing concern in recent years. Remediation of Sb contamination using plants may be an effective approach. This study aimed to investigate the potential of antimony (Sb) tolerance and accumulation by plants, as well as to understand the antioxidative responses to Sb. One set of hydroponic trials was set up using four species of fern plants, including Pteris cretica (PCA), Microlepia hancei (MH), Cyrtomium fortunei (CYF) and Cyclosorus dentatus (CYD). Ferns were grown for 2 weeks in nutrient solution containing a medium (5 mg L

Simultaneous hyperaccumulation of arsenic and antimony in Cretan brake fern: Evidence of plant uptake and subcellular distributions

“…These results further substantiate that Cretan brake fern is an As-hyperaccumulating and an Sbaccumulating plant [12,16]. In addition, the presence of As with Sb could dramatically enhance Sb uptake by Cretan brake fern, especially at a low As level.…”

“…The powders of plant tissues and the above three subcellular fractions were digested with concentrated HNO 3 and HClO 4 (9:1, v:v), and the concentrations of As and Sb were determined using a Hydride Generation Atomic Fluorescence Spectrometer (HG-AFS) (Beijing Titan Co Ltd.) [16,26]. Accuracy of elemental analysis was checked using the standard reference material from the Center for Standard Reference of China.…”

“…[11][12][13][14][15], and most of them belong to the fern species. Our previous report has shown that an As-hyperaccumulating fern, Pteris cretica (Cretan brake fern), also exhibited a relatively high tolerance to antimonite under hydroponic culture conditions [16]. Some other Sb accumulating plants have also been reported, such as Trifolium pratense L. [17], Achillea ageratum, Plantago lanceolata and Silene vulgaris [18], however, the mechanisms of Sb accumulation in these plants are still left to be resolved.…”

Antioxidative mechanisms on selenium accumulation in Pteris vittata L., a potential selenium phytoremediation plant

“…Methods for extractions of enzymes, activity assays of enzymes (SOD, POD, CAT, APX, and glutathione reductase (GR)) and determination of MDA content are described in Feng et al (2009b), briefly as follows: Approximately 0.2 g of fresh tissue was homogenized in a pre-cooled mortar with 5 mL 50 mmol/L phosphate buffer (pH 7.8) solution. The homogenate was centrifuged at 11 000 g for 20 min at 4°C.…”

Detoxification of antimony by selenium and their interaction in paddy rice under hydroponic conditions

“…1), both trivalent and pentavalent species of Sb exposures have been found to inhibit its growth, decrease the sprout rates of rice seeds, and reduce the yields and transformation ratios of dry matter [16]. More recently, Sb accumulations in plant tissues have been found to induce oxidative Microchemical Journal 97 (2011) 57-61 stress and reduce the biomass of two fern plants of Microlepia hancei and Cyclosorus dentatus [17]. Thus, more attention should be paid for the threats of Sb to the growth of crops and even to human health via food chain.…”