Escherichia coli physiology in Luria-Bertani broth

Escherichia coli physiology in Luria-Bertani broth
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DOI:
10.1128/jb.01368-07
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发表时间:
2007-12-01
影响因子:
3.2
通讯作者:
D'Ari, Richard
D'Ari, Richard
中科院分区:
生物学3区
文献类型:
--
作者:
Sezonov, Guennadi;Joseleau-Petit, Daniele;D'Ari, Richard

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Luria-Bertani肉汤支持大肠杆菌生长至600 nm处的光密度(OD 600)为7。然而,令人惊讶的是,当生长速率减慢并且细胞质量减少时,稳态生长在OD 600为0.3时停止。生长因缺乏可利用的碳源而停止。E. Luria-Bertani肉汤中的大肠杆菌是可分解代谢的氨基酸,而不是糖。
Luria-Bertani broth supports Escherichia coli growth to an optical density at 600 nm (OD600) of 7. Surprisingly, however, steady-state growth ceases at an OD600 of 0.3, when the growth rate slows down and cell mass decreases. Growth stops for lack of a utilizable carbon source. The carbon sources for E. coli in Luria-Bertani broth are catabolizable amino acids, not sugars.