Key;
Laboratory;
of;
Protein;
and;
Plant;
Genetic;
Engineering,;
College;
of;
Life;
Sciences,;
Peking;
University,;
Beijing;
100871,;
China;
of;
Hydrobiology,;
Chinese;
Academy;
of;
Sciences,;
Wuhan;
430072,;
China;
丝状固氮蓝藻; 光系统II; 异形胞; 蛋白酶; 降解; D1蛋白; 鱼腥藻; 分化过程;