The algal cells of ?Haematococcus pluvialis?, grown in a modified Bristol Medium to logarithm phase, were harvested and transferred to stress environments (nitrogen?deficit, phosphate?deficit and acetate?stimulation) for cell type transformation.

• 将培养到营养生长对数期的雨生红球藻细胞转移到胁迫环境中；探讨胁迫因子对雨生红球藻细胞类型转化的影响及各影响因子间的协同作用.