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Effects of High K^+ and Alkaline pH on Ultrastructure of Dunaliella salina Chloroplasts 被引量:2
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作者 马淑英 黄阳成 +1 位作者 杨小贺 武维华 《Acta Botanica Sinica》 CSCD 1999年第12期1342-1344,共3页
ItwasreportedthatthegrowthofDunaliellasalinaTeod .culturedinmediumcontaining 1mol/L NaClwasalmostcompletelyinhibitedbytheadditionof 10 0mmol/LKCl.ThehighK+ (10 0mmol/LKCl) treatmentalsosignificantlyinhibitedthephoto... ItwasreportedthatthegrowthofDunaliellasalinaTeod .culturedinmediumcontaining 1mol/L NaClwasalmostcompletelyinhibitedbytheadditionof 10 0mmol/LKCl.ThehighK+ (10 0mmol/LKCl) treatmentalsosignificantlyinhibitedthephotosyntheticrateofD .salinaanddecreasedchlorophyllcontentsin algae .ThisstudyfocusesonpossibleeffectsofhighK+ oralkalinepHontheultrastructuralchangeofchloro plastsinD .salina .AfterD .salinawasculturedinamediumcontaining 10 0mmol/LKClorinamedium withalkalinepHfor 8to 10days ,dramaticultrastructuralchangesoccurredinthechloroplastsincludingthy lakoidswelling ,volumeincreaseofchloroplast,andsignificantaccumulationofstarchgrainsinchloroplasts . Theresultsareconsistentwithourpreviousreportindicatingthattheultrastructuralchangesinchloroplastun derhighK+ oralkalinepHmayleadtoaninhibitoryeffectsonphotosynthesisandoverallgrowthofD .sali na . 展开更多
关键词 Dunaliellasalina POTASSIUM CHLOROPLAST starchgrain Osmoticregulation
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