RT Journal Article ID 326b9b0152cb8024 A1 Swaminathan, P. A1 Venugopal, R. A1 Mallayan, P. A1 Lakshmanan, U. T1 Chromium-induced in vivo DNA changes in marine algae Oscillatoria willei BDU 130511 (Cyanophyta) JF International Journal on Algae JO IJA YR 2009 FD 2009-11-13 VO 11 IS 4 SP 394 OP 402 K1 Cyanophyta K1 DNA circular dichroism spectrum K1 viscometry K1 chromate reductase AB 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). PB Begell House LK https://www.dl.begellhouse.com/journals/7dd4467e7de5b7ef,6ed9d7ee4dcf70ba,326b9b0152cb8024.html