两族群钝顶螺旋藻Spirulina (Arthrospra) platensis光强适应性  

Light adaptability of tow strains of Spirulina (Arthrospra) platensis

作　　者：高凌岩[1] 高锦[2] 王林和[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]内蒙古农业大学食品科学与工程学院,呼和浩特010019

出　　处：《干旱区资源与环境》2011年第11期199-204,共6页Journal of Arid Land Resources and Environment

基　　金：国家科技支撑计划(项目编号:2011BAC07B02-03);内蒙古农业大学科研创新团队(编号:NDTD2010-11)资助

摘　　要：螺旋藻光强适应性与其族群、培养时间等条件相关。为了探明分布在鄂尔多斯高原沙区碱湖的钝顶螺旋藻Spirulina(Arthrospra)platensis的光强适应性,采用比色法、生物量法实地、长期观测了其光强适应性,并与乍得湖引进的钝顶螺旋藻进行了比较。结果表明:24℃、连续7天荧光灯的照射下,国内族群的光补偿点约为0.58μmol.m-2.s-1;光饱和点约为82.1μmol.m-2.s-1;光抑制点约为129.6μmol.m-2.s-1;光分解点为230μmol.m-2.s-1。129.6μmol.m-2.s-1的连续光能够使两族群的很多藻丝体完全压紧。超过230μmol.m-2.s-1使国内族群以多个藻丝体纠结成团的方式避免高光强;而引进族群的藻丝体则不能。无论是液相或是固相螺旋藻都能够被光分解。两族群的藻丝体都需要暗的修复期。藻丝体有趋光性。Light adaptability of Spirulina has relationship with its strains,cultural time and etc..The Spirulina that came from Erdos Plateau sand area＇s alkaline lakes was tested by the methods of color comparison,production,observation at the lake and lab for long time to study it＇s light adaptability,and the Spirulina came from Chad lake was use to compare with the strain.The results indicated that the native strain of Spirulina ＇s compensation point of light is 0.58μmol·m^-2s^-1,sturation of light is 82.1 μmol·m^-2s^-1,stress point of light is 129.6μmol·m-2s-1,decomposing point of light is 230μmol·m^-2s^-1 for the single alga.The native strain can make a ball in several algae to escape from strong light.But the intruduced strain can＇t do in this way and it can be decomposed on 230μmol·m^-2s^-1 continuous light when OD560 is 0.06.The continuous 129.6μmol·m^-2s^-1 light make many algae no helix space for both strains.Spirulina can be decomposed by light wathever in liquid or on soild.The both strains are much more healthy under the rhythm with light and dark than the continuous light for several day.Spirulina needs the dark time for its repair.The single alga has trait of photokinesis.

关 键 词：钝顶螺旋藻 鄂尔多斯沙区碱湖 乍得碱湖 光强适应性 

分 类 号：Q947.8[生物学—植物学]