两种培养基间雨生红球藻细胞生长分化差异及磷的作用

基于雨生红球藻游动细胞和不动细胞间Triton X-100敏感性的差异，建立了一种快速监测培养过程中细胞分化的指标，对比了雨生红球藻在BG11和BBM两种培养基中的细胞生长与分化差异. 结果表明，在BBM培养基中培养8 d，雨生红球藻的游动细胞比例始终较高，而在BG11中早期不动孢子囊释放的游动孢子则快速成熟并转变成不动细胞. 这主要是由于BBM中游动细胞通过有丝分裂或孢子囊两种模式维持了其继续分裂与增殖的能力，而BG11中这些繁殖形式缺失的主要原因在于其较低的磷浓度，培养基中适当的高磷含量对保持雨生红球藻培养中期游动细胞的持续繁殖非常关键.

Effects of Phosphorus on H. pluvialis Cell Propagation and Differentiation in Two Medium

A novel method to fast characterize cell differentiation of Haematococcus pluvialis SCCAP k-0084 by cell osmotic sensitivity of motile cells and non-motile cells on Triton X-100 was proposed and then cell propagation and differentiation of H. pluvialis in two fresh medium BG11 and BBM were investigated. It was found that BBM medium kept a high percentage of motile cells in the first 8 d cultivation. In contrast, the released motile cells gradually transformed to non-motile cells. The cell proliferation in BBM medium is contributed by both mitosis and the formation of sporangium of motile cells. It is proved that such differences of cell propagation and differentiation are produced by that the low phosphorus concentration in BG11, indicating the importance of appropriate phosphorus concentration in medium to maintain the continuous division of motile cells.