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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Печать: 1521-9429
ISSN Онлайн: 1940-4328

Выпуски:
Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal on Algae

DOI: 10.1615/InterJAlgae.v11.i4.80
pages 394-402

Chromium-induced in vivo DNA changes in marine algae Oscillatoria willei BDU 130511 (Cyanophyta)

P. Swaminathan
National Facility for Marine Cyanobacteria, Bharathidasan University, Tiruchirappali 620024
R. Venugopal
Department of Chemistry, Bharathidasan University, Tiruchirappali 620024
P. Mallayan
Department of Chemistry, Bharathidasan University, Tiruchirappali 620024
U. Lakshmanan
National Facility for Marine Cyanobacteria, Bharathidasan University, Tiruchirappali 620024

Краткое описание

This work has been devised to resolve and examine the fate of chromosomal DNA of marine cyanobacterium (Cyanophyta) Oscillatoria willei BDU 130511 upon chromium exposure. The organism exhibited ability to grow at 1 mM hexavalent chromium. Decreased intensity at base stacking and 3 nm red-shift in the helicity band of circular dichroism (CD) spectrum coupled with decreased DNA viscosity; which demonstrated the change in structure of DNA through possible electrostatic interaction of Cr (III) ions as an adaptive mechanism. Increased chromate reductase activity provided evidence for the conversion of toxic Cr (VI) to less toxic Cr (III).