Inorganic and Organic Compounds of Freshwater Filamentous Cyanobacteria under Normal and Salt Stress Conditions  

作　　者：Surasak Laloknam Potitom Kanchitanurak Bongkoj Boonburapong Vandna Rai Sombat Kongwitthaya 

机构地区：[1]Department of General Science, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand [2]Research Unit on Science Technology and Environment for Learning, Faculty of Science, Srinakharinwirot University, Bangkok10110, Thailand [3]Educational Research Development and Demonstration Institute, Srinakharinwirot University, Nakornnayok 26120, Thailand [4]National Research Centre on Plant Biotechnology, Indian Agriculture Research Institute, New Delhi 110012, India [5]Department of Science Service, Ministry of Science and Technology, Bangkok 10400, Thailand

出　　处：《Journal of Chemistry and Chemical Engineering》2014年第11期1059-1067,共9页化学与化工（英文版）

摘　　要：The main aim of this work was to investigate the effects of salt stress conditions on the inorganic and organic compounds of extracts from six filamentous cyanobacteria： Arthospira platensis, Oscillatoria sp., Oscillatoria salina, Tolypothrix sp., Oscillatoria sp. SWU （Srinakharinwirot University）121 and Tolypothrix sp. SWU213. All cyanobacteria were cultures in BG （blue-green algae）11 medium： pH 7.5 at 35 ℃ for 30 days of sodium chloride in the culture medium presented 0-1.0 M. The cyanobacteria isolates grew well in BGH medium, nevertheless, growth of the majority of isolates was reduced by about 50% in the same medium containing 0.5 M NaCl. The inorganic compounds such as, Na^＋, K^＋, Ca^2＋, Mg^2＋, NH4^＋ and NO3^- were determined. All ions were reduced when NaCI was increased and Na^＋ showed highest amount in the medium followed with Mg^2＋, NH4^＋, NO3^- and Ca^2＋ in all cyanobaeteria. The organic compounds such as, betaine, proline and total lipid were determined under normal and salt stress conditions. We found that all cyanobacteria increased interesting organic compound under salt stress condition at least two folds to compare with normal condition. This is the first finding indicated that freshwater filamentous cyanobacteria could grow under salt stresses by accumulation of some organic compounds as osmoprotectants such as betaine and amino acids, being the reduction related to the amount of inorganies compounds present in cultures.

关 键 词：Filamentous cyanobacteria salt stress condition OSMOPROTECTANTS 

分 类 号：Q949.22[生物学—植物学] O621.2[理学—有机化学]