Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH

CHEN Chang-ping; GAO Ya-hui; LIN Peng

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CHEN Chang-ping, GAO Ya-hui, LIN Peng. Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH[J]. Haiyang Xuebao, 2006, 28(5): 123-129.

Citation:

CHEN Chang-ping, GAO Ya-hui, LIN Peng. Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH[J]. Haiyang Xuebao, 2006, 28(5): 123-129.

CHEN Chang-ping, GAO Ya-hui, LIN Peng. Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH[J]. Haiyang Xuebao, 2006, 28(5): 123-129.

Citation:

CHEN Chang-ping, GAO Ya-hui, LIN Peng. Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH[J]. Haiyang Xuebao, 2006, 28(5): 123-129.

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Production of extracellular polymeric substances(EPS) by benthic diatom: effect of salinity and pH

School of Life Sciences, Xiamen University, Xiamen 361005, China

Received Date: 2005-09-10
Rev Recd Date: 2005-12-05

Abstract

Abstract

Influences of salinity and pH value on reproduction, protein content and extracellular polymeric substances (EPS) of benthic diatom Cylindrotheca closterium (Ehr.) Reimannet Lewin were studied.Salinity and pH value fit to C.closterium were 15 and 8, respectively, showing brackish water species.Abundant EPS were secreted by C.closterium characterized by brackish water species under high salinity (> 15) and low pH (< 8) stress, showing functions in abnormal conditions.The fraction of EPS that was closely bound to the cells (at tached EPS) and the soluble fraction (colloidal EPS) were produced in differentam ounts at the different salinity and pH value.This suggested that the production of the 2 operationally defined fractions of EPS might serve different functions.No significant differences were found on intracel lular carbohydrate production of C.closterium under different salinity and pH value.
- benthic diatoms,
- extracellular polymeric substances (EPS),
- salinity,
- pH

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References(24)

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