Effects of mercuric chloride on akinete germination and sporulation in Pithophora oedogonia (Mont.) Wittrock (Cladophorales, Chlorophyceae)

✍ Scribed by Dr. B. R. Chaudhary; H. V. Singh

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 359 KB
• Volume: 26
• Category: Article
• ISSN: 0233-111X
• DOI: 10.1002/jobm.3620260102

✦ Synopsis

The effect of mercuric chloride on akinete germination and sporulation with respect to time lapse and extent was studied in Pithophwa oedogonia (Mom.) WITTROCK (Cldophorales, Chlorophyceae). At HgCl, concentrations from 1.25 to 45 mg/l akinetes showed progressive delay in the initiation and reduction in the extent of germination. HgCl, concentrations of 00 mg/l and above proved to be completely lethal to the spores as they failed to germinate. The time necessary for the initiation of akinete formation and the percentage sporulation also decreased with an increase in the concentration of HgCl, from 1.25 to 45 mg/l where spore germination was encountered. Inactivation of enzymes and metabolic inhibition seemed to be the cause of spore lethality. at the investigation of the effect of HgCl, on the germination and formation of akinetes in P . oedogonia, a filamentous green alga forming thick, free floating mats and often growing as a great nuisance in eutrophic water bodies.