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Recruitment potential of a green alga Ulva flexuosa Wolfen dark preserved zoospore and its development

DRS at CSIR-National Institute of Oceanography

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Title Recruitment potential of a green alga Ulva flexuosa Wolfen dark preserved zoospore and its development
 
Creator Imchen, T.
 
Subject recruitment
seaweed culture
light effects
phosphates
 
Description The recruitment potential and the ability of Ulva flexuosa Wulfen zoospores to survive darkness were tested under different conditions. The dark preserved zoospore was cultured under a two-factor experimental design to test the effect of salinity and nitrate, effect of salinity and phosphate, effect of light and salinity, and effect of light and phosphate. The recruitment (germination and growth) of zoospores was significantly affected by light and salinity. The nitrate concentration of 20 mu mol.l sup(-1) was found to initiate the process of germination and its subsequent growth and, its effect appeared greatest under 25 psu condition. While nitrate enhances the growth of biomass more than phosphate, both show a positive interactive effect on biomass increase when crossed with salinity. The combined effect of 25 psu salinity and 8 mu mol.l sup(-1) phosphate exhibited higher biomass growth. There was a significant effect of light and salinity on the biomass of zoospore, though there was no significant interaction between the two factors. There was an increase in biomass of growing zoospores to increase in light intensity and 80 mu mol.m sup(-2).s sup(-1) of light intensity was considered optimal. Similarly, high light intensity condition favored higher biomass growth and there was significant interaction between light (80 mu mol.m sup(-2).s sup(-1)) and phosphate (4 mu mol.l sup(-1)) in high salinity (35 psu) condition. The result of this study showed that dark preserved zoospores of U. flexuosa have the potential for recruitment and it gives us an understanding how different factors play a role in the process of recruitment.
 
Date 2012-03-28T11:56:44Z
2012-03-28T11:56:44Z
2012
 
Type Journal Article
 
Identifier PLoS One, vol.7; 2012; e32651, 5pp
no
http://drs.nio.org/drs/handle/2264/4033
 
Language en
 
Relation PLoS_One_7_e32651.jpg
 
Rights CC Attribution 3.0 License
 
Publisher Public Library of Science