Regulation of B on Growth and Material Accumulation of Dunaliella Salina

The experiment study regulation of different concentration B on growth and material accumulation of Dunaliella salina.The result shows more or less B goes against Dunaliella salina cell growth and material accumulation.B of 4mg/L is advantageous to growth,protein synthesizes and β-carotene accumulation of Dunaliella salina in culture medium.It is used to culture Dunaliella salina.When the concentration of B is 8mg/L or 2mg/L,the content of protein and β-carotene in each cell Dunaliella salina is higher.But cell density is lower right now,the total material accumulation of Dunaliella salina cell is less.It may be that Dunaliella salina form adverse protein and carotene by the adaptive response under the rich or poor B stress.