^pof;
Life;
Science,;
East;
China;
Normal;
University,;
Shanghai;
200062,;
China;
^pKey;
Lab;
of;
Plant;
Molecular;
Genetics,;
Institute;
of;
Plant;
Physiology;
and;
Ecology,;
Shanghai;
Institutes;
of;
Biological;
Sciences,;
Chinese;
Academy;
of;
Sciences,;
Shanghai;
200032,;
China;
中华根瘤菌; 蛋白质分解; 苜蓿根瘤菌; EAL; 生产控制; 胞外多糖; 竞争结瘤; 基因突变体;