General calibration of microbial growth in microplate readers.

General calibration of microbial growth in microplate readers.
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微生物读取器中微生物生长的一般校准。

DOI:
10.1038/srep38828
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发表时间:
2016-12-13
期刊:
影响因子:
4.6
通讯作者:
Pilizota T
Pilizota T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Stevenson K;McVey AF;Clark IBN;Swain PS;Pilizota T

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微生物生长的光密度(OD)测量是微生物学中最常用的技术之一,其应用范围从抗生素功效的研究到不同营养或应激环境下生长的调查,再到不同突变菌株的表征,包括那些含有合成回路的突变菌株。假设获得的OD值与细胞数量(即样品浓度)成比例,则进行OD测量。然而,该假设在有限的条件范围内成立,并且目前缺少确定该范围的校准技术。在这里,我们提出了一套校准程序和注意事项,成功地估计细胞浓度从OD测量是必要的。
Optical density (OD) measurements of microbial growth are one of the most common techniques used in microbiology, with applications ranging from studies of antibiotic efficacy to investigations of growth under different nutritional or stress environments, to characterization of different mutant strains, including those harbouring synthetic circuits. OD measurements are performed under the assumption that the OD value obtained is proportional to the cell number, i.e. the concentration of the sample. However, the assumption holds true in a limited range of conditions, and calibration techniques that determine that range are currently missing. Here we present a set of calibration procedures and considerations that are necessary to successfully estimate the cell concentration from OD measurements.
DOI: 10.1016/0003-2697(70)90174-0
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