Regulating Expression of Pyruvate Kinase in Bacillus subtilis for Control of Growth Rate and Formation of Acidic Byproducts

2008 ◽  
Vol 22 (5) ◽  
pp. 1451-1455 ◽  
Author(s):  
Zhiwei Pan ◽  
Tao Zhu ◽  
Nathan Domagalski ◽  
Saleem Khan ◽  
Richard R. Koepsel ◽  
...  
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Pyruvate Kinase

13C NMR Evidence for Pyruvate Kinase Flux Attenuation Underlying Suppressed Acid Formation in Bacillus subtilis

2000 ◽  
Vol 16 (2) ◽  
pp. 169-175 ◽  
Author(s):  
C. Phalakornkule ◽  
B. Fry ◽  
T. Zhu ◽  
R. Kopesel ◽  
M.M. Ataai ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Pyruvate Kinase ◽  
13C Nmr ◽  
Acid Formation

scholarly journals An Exploration of Seaweed Polysaccharides Stimulating Denitrifying Bacteria for Safer Nitrate Removal

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3390
Author(s):  
Hui Zhang ◽  
Lin Song ◽  
Xiaolin Chen ◽  
Pengcheng Li
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Nitrate Removal ◽  
Denitrifying Bacteria ◽  
Soil Salinization ◽  
Nitrate Content ◽  
Weak Efficiency ◽  
N Accumulation ◽  
N Removal ◽  
Intensively Managed

Excessive use of nitrogen fertilizer in intensively managed agriculture has resulted in abundant accumulation of nitrate in soil, which limits agriculture sustainability. How to reduce nitrate content is the key to alleviate secondary soil salinization. However, the microorganisms used in soil remediation cause some problems such as weak efficiency and short survival time. In this study, seaweed polysaccharides were used as stimulant to promote the rapid growth and safer nitrate removal of denitrifying bacteria. Firstly, the growth rate and NO3−-N removal capacity of three kinds of denitrifying bacteria, Bacillus subtilis (BS), Pseudomonas stutzeri (PS) and Pseudomonas putida (PP), were compared. The results showed that Bacillus subtilis (BS) had a faster growth rate and stronger nitrate removal ability. We then studied the effects of Enteromorpha linza polysaccharides (EP), carrageenan (CA), and sodium alginate (AL) on growth and denitrification performance of Bacillus subtilis (BS). The results showed that seaweed polysaccharides obviously promoted the growth of Bacillus subtilis (BS), and accelerated the reduction of NO3−-N. More importantly, the increased NH4+-N content could avoid excessive loss of nitrogen, and less NO2−-N accumulation could avoid toxic effects on plants. This new strategy of using denitrifying bacteria for safely remediating secondary soil salinization has a great significance.

scholarly journals Control of the specific growth rate of Bacillus subtilis for the production of biosurfactant lipopeptides in bioreactors with foam overflow

2010 ◽  
Vol 45 (11) ◽  
pp. 1800-1807 ◽  
Author(s):  
S. Chenikher ◽  
J.S. Guez ◽  
F. Coutte ◽  
M. Pekpe ◽  
P. Jacques ◽  
...  
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Specific Growth Rate ◽  
Specific Growth

scholarly journals Biphasic Cell-Size and Growth-Rate Homeostasis by Single Bacillus subtilis Cells

2020 ◽  
Vol 30 (12) ◽  
pp. 2238-2247.e5 ◽  
Author(s):  
Niclas Nordholt ◽  
Johan H. van Heerden ◽  
Frank J. Bruggeman
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Cell Size

Relation of Ribonucleic Acid Composition to Growth Rate and Dormancy in Bacillus subtilis

Nature ◽  
1964 ◽  
Vol 203 (4949) ◽  
pp. 1092-1094 ◽  
Author(s):  
ROY H. DOI ◽  
RICHARD T. IGARASHI
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Acid Composition ◽  
Ribonucleic Acid

scholarly journals PENGARUH JENIS BAKTERI PROBIOTIK TERHADAP PERTUMBUHAN IKAN LELE MUTIARA YANG DIPELIHARA MENGGUNAKAN SISTEM BIOFLOK

2021 ◽  
Vol 9 (1) ◽  
pp. 41-48
Author(s):  
Harits Noodin ◽  
Ita Apriani
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Specific Weight ◽  
Fish Growth ◽  
Probiotic Bacteria ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Randomized Design ◽  
Probiotic Treatment ◽  
Absolute Length

The main problems faced by fish farmers are waste, uneaten feed and feces.  Which can reduce water quality and have a significant impact on fish growth and survival. This study aims to determine the effect of giving various types of probiotics on the growth rate and viability of Mutiara catfish raised using the biofloc system. We used Lactobacillus sp., Bacillus subtilis, and Nitrobacter as probiotic bacteria. This study used a completely randomized design experimental method with 4 treatments and 3 replications, namely K = probiotic less/control, P1= Lactobacillus probiotic, P2= Bacillus subtilis probiotic, P3= Nitrobacter probiotic. Catfish are reared for 30 days, feeding 3 times a day with FR 5% of body biomass. The parameters observed were absolute length growth, survival, Feed Conversion Ratio (FCR) and Specific Growth Rate (SGR) which were analyzed using ANOVA (P <0.05) and Duncan's test to see the differences between treatments. The results showed that the bacteria probiotic treatment had no significant effect on FCR and fish survival, but had a Lactobacillus sp significant effect on growth in absolute length (3.96 ± 0.06 cm) and the growth rate of daily specific weight (5,45±0,18 %/day).  To increase the length and weight growth of catfish fry, probiotic bacteria of the type Lactobacillus sp. on cultivation media.Key words :biofloc, growth rate, lactobacillus, mutiara catfish, probiotics

Dimension control in bacteria

1974 ◽  
Vol 20 (2) ◽  
pp. 231-236 ◽  
Author(s):  
Edward G. Sedgwick ◽  
Richard J. L. Paulton
Keyword(s):  
Growth Rate ◽  
Bacillus Subtilis ◽  
Cell Size ◽  
Growth Rates ◽  
Individual Cell ◽  
Cell Number ◽  
Cell Arrangement ◽  
Dimension Control ◽  
Constant Cell ◽  
The Individual

The effect of nutrition on the relation between growth rate and cell arrangement, cell size, and macro-molecular composition in Bacillus subtilis is described in comparison to earlier observations with other bacteria. Improvements in nutrition resulted in faster growth rates but, although the mass and size of the replicating unit (i.e. cell number/chain) also increased, there was no change in the mass or size of the individual cell. This constant cell size and variable cell arrangement in B. subtilis is in contrast to other bacteria and requires new proposals for the control of cell size and arrangement in different bacteria.

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