title: Arsenic affects mineral nutrients in grains of various Indian rice (Oryza sativa L.) genotypes grown on arsenic-contaminated soils of West Bengal.
abstract: The exposure of paddy fields to arsenic (As) through groundwater irrigation is a serious concern that may not only lead to As accumulation to unacceptable levels but also interfere with mineral nutrients in rice grains. In the present field study, profiling of the mineral nutrients (iron (Fe), phosphorous, zinc, and selenium (Se)) was done in various rice genotypes with respect to As accumulation. A significant genotypic variation was observed in elemental retention on root Fe plaque and their accumulation in various plant parts including grains, specific As uptake (29-167 mg kg(-1) dw), as well as As transfer factor (4-45%). Grains retained the least level of As (0.7-3%) with inorganic As species being the dominant forms, while organic As species, viz., dimethylarsinic acid and monomethylarsonic acid, were non-detectable. In all tested varieties, the level of Se was low (0.05-0.12 mg kg(-1) dw), whereas that of As was high (0.4-1.68 mg kg(-1) dw), considering their safe/recommended daily intake limits, which may not warrant their human consumption. Hence, their utilization may increase the risk of arsenicosis, when grown in As-contaminated areas.
authors.affiliation: National Botanical Research Institute, Council of Scientific and Industrial Research, Lucknow, 226 001, Uttar Pradesh, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Dwivedi
authors.forename: R D
authors.initials: RD
authors.lastname: Tripathi
authors.forename: Sudhakar
authors.initials: S
authors.lastname: Srivastava
authors.forename: Ragini
authors.initials: R
authors.lastname: Singh
authors.forename: Amit
authors.initials: A
authors.lastname: Kumar
authors.forename: Preeti
authors.initials: P
authors.lastname: Tripathi
authors.forename: Richa
authors.initials: R
authors.lastname: Dave
authors.forename: U N
authors.initials: UN
authors.lastname: Rai
authors.forename: Debasis
authors.initials: D
authors.lastname: Chakrabarty
authors.forename: P K
authors.initials: PK
authors.lastname: Trivedi
authors.forename: R
authors.initials: R
authors.lastname: Tuli
authors.forename: B
authors.initials: B
authors.lastname: Adhikari
authors.forename: M K
authors.initials: MK
authors.lastname: Bag
mesh_terms: D000383:Agriculture; D001151:Arsenic / Q000494:pharmacology*; D005502:Food; D005506:Food Contamination; D006801:Humans; D007194:India; D008903:Minerals; D012275:Oryza / Q000033:anatomy & histology / Q000187:drug effects / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000494:pharmacology*
chemical_list: D008903:Minerals; D012987:Soil; D012989:Soil Pollutants; D001151:Arsenic