Journal ArticleDOI
Effect of arsenic on some physiological parameters in bean plants
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In this paper, the effect of different arsenic concentrations on some physiological parameters of bean (Phaseolus vulgaris L.) cultivars Plovdiv 10 and Prelom in the early growth phases was investigated.Abstract:
The objective of the study was to investigate the effect of different arsenic concentrations on some physiological parameters of bean (Phaseolus vulgaris L.) cultivars Plovdiv 10 and Prelom in the early growth phases. Seedlings, grown in sand with Hoagland-Arnon nutrient solution in a climatic box, were treated with 0, 2, 5 mg(As) dm−3 as Na3AsO4 (pH 5.5). After 5 d of As treatment, the changes in leaf gas-exchange, water potential, chlorophyll and protein contents, peroxidase activity and lipid peroxidation in roots were recorded. Physiological analysis showed a minor negative effect of arsenic at concentration 2 mg(As) dm−3, but at the higher dosage of 5 mg(As) dm−3 growth, leaf gas-exchange, water potential, protein content and biomass accumulation were reduced in both cultivars. The peroxidase activity and lipid peroxidation increased considerably at 5 mg(As) dm−3, which is a typical reaction of the plants to a presence of oxidative stress.read more
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Heavy metals in soils : trace metals and metalloids in soils and their bioavailability
TL;DR: In this article, the authors defined the sources of heavy metals and metalloids in Soils and derived methods for the determination of Heavy Metals and Metalloids in soil.
Journal ArticleDOI
Effect of arsenic on growth, oxidative stress, and antioxidant system in rice seedlings.
Manju Shri,Smita Kumar,Debasis Chakrabarty,Prabodh Kumar Trivedi,Shekhar Mallick,Prashant Misra,Devesh Shukla,Seema Mishra,Sudhakar Srivastava,Rudra Deo Tripathi,Rakesh Tuli +10 more
TL;DR: The physiological, biochemical, and proteomic changes in germinating rice seedlings were investigated under arsenic stress and the results are suggestive of differential metabolism of As(III) and As(V) in rice.
Journal ArticleDOI
Arsenic toxicity in crop plants: physiological effects and tolerance mechanisms
Neera Garg,Priyanka Singla +1 more
TL;DR: The role ofArsenic speciation in the environment and how As is taken up by the roots and metabolised within plants, and the role of arbuscular mycorrhizae in alleviating arsenic toxicity in crop plants are reviewed.
Journal ArticleDOI
Arsenic-induced root growth inhibition in mung bean ( Phaseolus aureus Roxb.) is due to oxidative stress resulting from enhanced lipid peroxidation
TL;DR: In this paper, the effect of As (10.0 and 50.0 μM) on seedling growth, root anatomy, lipid peroxidation (malondialdehyde and conjugated dienes), electrolyte leakage, H2O2 content, root oxidizability and the activities of antioxidant enzymes in mung bean (Phaseolus aureus Roxb).
Journal ArticleDOI
Selenium antagonises the toxic effects of arsenic on mungbean (Phaseolus aureus Roxb.) plants by restricting its uptake and enhancing the antioxidative and detoxification mechanisms
TL;DR: The presence of arsenic (As) in the metal-contaminated soils is toxic for the crops causing their impaired growth and development and Selenium (Se) is also likely to be present along with As in the polluted soils.
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Protein Measurement with the Folin Phenol Reagent
TL;DR: Procedures are described for measuring protein in solution or after precipitation with acids or other agents, and for the determination of as little as 0.2 gamma of protein.
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Photoperoxidation in isolated chloroplasts. I. Kinetics and stoichiometry of fatty acid peroxidation.
Robert L. Heath,Lester Packer +1 more
TL;DR: It is concluded that isolated chloroplasts upon illumination can undergo a cyclic peroxidation initiated by the light absorbed by chlorophyll.
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Determinations of total carotenoids and chlorophylls a and b of leaf extracts in different solvents
TL;DR: Pfister et al. as mentioned in this paper used a t.1.c. method (Lichtenthaler 8t Pfister, 1978) that permits a distinct separation of the two chlorophylls and also the major carotenoids using light petroleum (b.p. 40-6O0C)/dioxane/propan-2-ol (7 :3 : 1, by vol.) as a developing solvent.
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Photoperoxidation in isolated chloroplasts. II. Role of electron transfer.
Robert L. Heath,Lester Packer +1 more
TL;DR: The results suggest that at high light intensities, overloading of the chlorophyll collection system results in energy being channeled into destructive cyclic peroxidation processes involving the membrane fatty acids.