title: Arsenic accumulation pattern in 12 Indian ferns and assessing the potential of Adiantum capillus-veneris, in comparison to Pteris vittata, as arsenic hyperaccumulator.
abstract: The present study was undertaken to evaluate the ability of some Indian ferns to accumulate and tolerate arsenic. Twelve species of Indian ferns were exposed to 10 mg L(-1) arsenic as sodium arsenate for 15 days in hydroponic system. Depending on the arsenic uptake in the plant parts--Pteris vittata, Pteris cretica, Adiantum capillus-veneris and Nephrolepis exaltata may be categorised as arsenic accumulator. Further, A. capillus-veneris plants were grown in arsenic contaminated soil (200-600 mg kg(-1)) under green-house condition, to assess its arsenic accumulation and tolerance mechanism, in comparison to known As-hyperaccumulator--P. vittata Linn., growing in the same conditions. The experiment identified A. capillus-veneris having a potential to tolerate arsenic up to 500 mg kg(-1). The plants were analysed for the extent of oxidative stress, as a result of arsenic accumulation. A. capillus-veneris was able to detoxify the arsenic stress through induction of anti-oxidant defence system.
authors.affiliation: National Botanical Research Institute, Council of Scientific and Industrial Research, Lucknow 226 001, India. nanditasingh8@yahoo.co.in
authors.forename: Nandita
authors.initials: N
authors.lastname: Singh
authors.forename: Anshita
authors.initials: A
authors.lastname: Raj
authors.forename: P B
authors.initials: PB
authors.lastname: Khare
authors.forename: R D
authors.initials: RD
authors.lastname: Tripathi
authors.forename: Sarah
authors.initials: S
authors.lastname: Jamil
mesh_terms: D035681:Adiantum / Q000201:enzymology / Q000378:metabolism*; D001151:Arsenic / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002338:Carotenoids / Q000378:metabolism; D002374:Catalase / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D005978:Glutathione / Q000378:metabolism; D018527:Hydroponics; D007194:India; D008315:Malondialdehyde / Q000378:metabolism; D018384:Oxidative Stress; D018515:Plant Leaves / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D018517:Plant Roots / Q000201:enzymology / Q000254:growth & development; D018520:Plant Shoots / Q000201:enzymology / Q000254:growth & development; D032495:Pteris / Q000201:enzymology / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D010940:Plant Proteins; D012987:Soil; D002734:Chlorophyll; D002338:Carotenoids; D008315:Malondialdehyde; D002374:Catalase; D013482:Superoxide Dismutase; D005978:Glutathione; D001151:Arsenic