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<p>Phytoplankton assemblage and UV-protective compounds in the river Ganges</p>

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Title Statement <p>Phytoplankton assemblage and UV-protective compounds in the river Ganges</p>
 
Added Entry - Uncontrolled Name Sinha, Rajeshwar P; Banaras Hindu University
Ahmed, H ; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Pathak, J ; Department of Botany, Pt. Jawaharlal Nehru College, Banda 210 001, Uttar Pradesh, India
Singh, D K; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Pandey, A ; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
., Rajneesh ; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Singh, V ; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Kumar, D ; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Singh, P R; Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
University Grant commission, Council of Scientific and Industrial Research, Department of Biotechnology, India
 
Uncontrolled Index Term Mycosporine-like amino acids, Phytoplankton, River Ganges, Scytonemin, Ultraviolet radiation
 
Summary, etc. <p class="Default">Interactions between physico-chemical parameters such as pH, temperature, nitrate, phosphate, alkalinity, acidity, biological oxygen demand (BOD), chemical oxygen demand (COD) and solar ultraviolet radiation (UVR) strongly affect aquatic ecosystems. Due to fluctuations in several environmental factors including river water pollution and UVR, organisms are under constant threat. However, phytoplankton protects themselves from environmental extremes by adopting several defense strategies including synthesis of photoprotective compounds such as scytonemin and mycosporine-like amino acids (MAAs).<br />We investigated the presence of scytonemin and MAAs in phytoplankton of some polluted sites of one of the holy rivers of the world, the Ganges at Varanasi, India. We observed phytoplankton assemblages and studied certain environmental parameters which could possibly affect phytoplankton diversity in the river. Phytoplankton consisted mainly of 49 taxa of 34 genera belonging to Bacillariophyceae, Chlorophyceae, Cyanophyceae, and Chrysophyceae. The members belonging to Bacillariophyceae and Chlorophyceae were the two dominant classes, which comprised up to 75% of the total phytoplankton.<br />Photoprotective compounds were isolated and characterized from phytoplankton. Electrospray ionization-mass spectrometry (ESI-MS) analysis of MAAs showed the presence of shinorine, palythinol, mycosporine-glycine and palythine. A high concentration of scytonemin was also observed with an absorption maximum at 386 nm in the studied phytoplankton.</p>
 
Publication, Distribution, Etc. Indian Journal of Traditional Knowledge (IJTK)
2021-03-03 16:09:58
 
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http://op.niscair.res.in/index.php/IJTK/article/view/27067
 
Data Source Entry Indian Journal of Traditional Knowledge (IJTK); ##issue.vol## 20, ##issue.no## 1 (2021): Indian Journal of Traditional Knowledge
 
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