Seasonal pattern of metal bioaccumulation and their toxicity on Sphagnum squarrosum.
Present study was undertaken as an attempt to study the effect of pollutants on biological responses of Sphagnum growing at Kainchi, Kumaon hills (Uttranchal). Sphagnum plants of almost identical size, collected from the marked sites of Kainchi in different seasons viz., monsoon, winter, summer and again in monsoon, were analysed for chlorophyll, protein, shoot length and nitrate reductase and peroxidase activities. Maximum chlorophyll, protein, shoots length and nitrate reductase activities were observed during the monsoon while minimum in summers. The abundance of Sphagnum and two other bryophytes, Marchantia and Plagiochasma was also higher in monsoon than in other seasons. The study also indicated that Sphagnum has more bioaccumulation and tolerance potential for heavy metals than Marchantia and Plagiochasma.
Saxena
Anuj
A
Department of Botany, Sacred Heart Degree College, Naipalapur, Sitapur-261 001, India. anujsaxena011@rediffmail.con
D002734:Chlorophyll / Q000378:metabolism; D004784:Environmental Monitoring; D007194:India; D019216:Metals, Heavy / Q000378:metabolism* / Q000633:toxicity*; D050901:Nitrate Reductase / Q000378:metabolism; D009195:Peroxidase / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D018520:Plant Shoots; D012621:Seasons; D044003:Sphagnopsida / Q000187:drug effects* / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism
D019216:Metals, Heavy; D010940:Plant Proteins; D002734:Chlorophyll; D009195:Peroxidase; D050901:Nitrate Reductase