Book ChapterDOI
Bioremediation of Toxic Metals Using Algae
Panchali Bhattacharya,Nabanita Chakraborty,Ruma Pal +2 more
- pp 439-462
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TLDR
Agarwal et al. as mentioned in this paper proposed a phytoremediation process based on metal interaction between microorganisms and algae, termed as "algae-metal interactions", which is the basis of phytoresmediation.Abstract:
The rapidly growing population and expanding technological activities have accelerated the rate of addition of numerous poisonous pollutants especially the metal ions to the surrounding environment. These pollutants become deleterious due to their mobilization, transport and deposition in the various aquatic as well as terrestrial ecosystems. The cyanobacteria and algae (commonly called together ‘Algae’) constitute the most ancient groups of autotrophic microorganisms and are invariably affected by the presence of metal ions in the environment (Whitton, Arch Mikrobiol 72:353–360, 1970). Algae are the organisms which can resist the metal toxicity by biochemical, chemical and physical mechanisms resulting in cell surface adsorption, metabolism dependent accumulation and precipitation (Gadd GM (1988) Accumulation of metals by microorganisms and algae. In: Rehm HJ (Ed) VCH, Weinheim, pp. 401–434). They instantly interact with metal pollutants differently at cellular level showing different responses and tolerance mechanisms, termed as ‘algae-metal interactions’—which is the basis of phytoremediation process.read more
Citations
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Journal ArticleDOI
Bioaccumulation and biotransformation of arsenic by the brown macroalga Sargassum patens C. Agardh in seawater: effects of phosphate and iron ions
M. Abdullah Al Mamun,M. Abdullah Al Mamun,Yoshiki Omori,Rimana Islam Papry,Chika Kosugi,Osamu Miki,Ismail M.M. Rahman,Asami S. Mashio,Teruya Maki,Hiroshi Hasegawa +9 more
TL;DR: The toxicity and bioaccumulation and biotransformation potential of inorganic arsenic (IAs) species As(V) and As(III) were investigated using Sargassum patens under laboratory culture for 7 days as discussed by the authors.
Journal ArticleDOI
Comparative biotransformation and detoxification potential of arsenic by three macroalgae species in seawater: Evidence from laboratory culture studies.
M. Abdullah Al Mamun,M. Abdullah Al Mamun,Yoshiki Omori,Osamu Miki,Ismail M.M. Rahman,Asami S. Mashio,Teruya Maki,Hiroshi Hasegawa +7 more
TL;DR: It is indicated that P in medium inhibits the intracellular uptake of As(V) and subsequent extrusion of biotransformed metabolites into the medium, which can help to understand the metabolic diversity of macroalgae species on As biogeochemistry in the marine environment.
Journal ArticleDOI
Arsenic speciation and biotransformation by the marine macroalga Undaria pinnatifida in seawater: A culture medium study
M. Abdullah Al Mamun,M. Abdullah Al Mamun,Ismail M.M. Rahman,Rakhi Rani Datta,Chika Kosugi,Asami S. Mashio,Teruya Maki,Hiroshi Hasegawa +7 more
TL;DR: The results indicated that the cellular uptake of As (V) and subsequent release of DMAA(V) were inhibited by P in the medium, which can be helpful in understanding the contribution of macroalgae to As biogeochemistry in marine environments and the potential risks of As dietary intake.
Arsenosugas and other arsenic compounds in littoral zone algae from the Adriatic Sea
TL;DR: In this paper, ICP-MS was used to detect arsenic compounds in 10 different marine algae from the littoral zone (found between the highest and lowest tide marks on the seashore).
Journal ArticleDOI
The Response of Sarcodia suiae to Long-term Exposure of Arsenic (Arsenate): Growth, Morphology, and Arsenic Alterations
TL;DR: The long-term data provide an improved understanding of the shortcomings of short-term studies and better interpretation of macroalgal cumulative behavior and As patterns, and indicate a high tolerance of the alga to the more toxic iAs (As(III)) suggesting S. suiae may warrant its use as an As(III) phytoremediator.
References
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Book
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TL;DR: 1. Oxygen is a toxic gas - an introduction to oxygen toxicity and reactive species, and the chemistry of free radicals and related 'reactive species'
Journal ArticleDOI
Structure-antioxidant activity relationships of flavonoids and phenolic acids
TL;DR: The factors underlying the influence of the different classes of polyphenols in enhancing their resistance to oxidation are discussed and support the contention that the partition coefficients of the flavonoids as well as their rates of reaction with the relevant radicals define the antioxidant activities in the lipophilic phase.
Journal ArticleDOI
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Journal ArticleDOI
ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under Control
Graham Noctor,Christine H. Foyer +1 more
TL;DR: A detailed account of current knowledge of the biosynthesis, compartmentation, and transport of these two important antioxidants, with emphasis on the unique insights and advances gained by molecular exploration are provided.
Journal ArticleDOI
THE WATER-WATER CYCLE IN CHLOROPLASTS: Scavenging of Active Oxygens and Dissipation of Excess Photons
TL;DR: Whenever the water-water cycle operates properly for scavenging of active oxygens in chloroplasts, it also effectively dissipates excess excitation energy under environmental stress.
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