Microbes mesophile

Microbe Mesophitic initial temp. < 40°C Thermophilic 40-70°C Mesophilic 70°C to cooler Number of species identified... 

Mesophiles Microbes that grow best at moderate temperatures (15 to 40°C). 

Rauser, W. E. (1995). Phytochelatins and related peptides. Plant Physiol. 109, 1141-1149. Rawlings, D. E. (1997). Mesophilic, autotrophic bioleaching bacteria description, physiology and role. In Biomining Theory, Microbes and Industrial Processes,tii.. Rawlings,... 

Microbial sulfate reduction is known from 3.47 Ga barites, from North Pole, Australia (Shen Buick, 2004). Petrological arguments constrain the temperature of sulfate reduction to below about 60°C and so limit the type of sulfate reducing bacteria to mesophiles. This argument is used to place sulfate reducing bacteria just above Thermodesulfobacterium.on the RNA tree (Shen Buick, 2004). There are important implications in this finding, for sulfate reduction is a complex metabolic process. This means that even by 3.47 Ga microbes had developed many of the key cellular systems found in their modern relatives and implies that even at 3.47 Ga they had had a long history. 

In industrial production, a lot of bacteria can be used for the production of CGTase, including aerobic mesophilic bacteria such as B. circulars and B. megaterium, etc, aerobic thermophilic bacteria such as B. stearothermophilus, and anaerobic thermophilic bacteria, such as Thermoanaerobacterium thermosul-furigenes, aerobic alkaliphilic bacteria such as B. circulars, Bacillus fat, and aerobic halophilic bacteria such as halophilic bacilli, etc. The CGTase secreted by most of the microbes are extracellular enzymes, and the yield of the CD and the main product of these enzymes are different, mainly a-CD, fi-CD and y-CD. 

Li T, Mazeas Sghir A, Leblon G, Bouchez T (2009) Insights into networks of functional microbes catalysing methanization of cellulose under mesophilic conditions. Environ Microbiol 11 889-904... 

To do genetic engineering on a natural microbe, such as an epithermophilic or mesophilic bacteria we find underground, is almost impossible. No one wants to talk to us about that kind of issue. They only want to see us use it as a means to remediate a contaminated zone. We have got to go back to a point where we can start understanding the chemical and metabolic processes of these kinds of microbes before we can even begin to attempt to do the fixation. Yet they are out there. That is the key issue. 

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