A hydrocarbon-utilizing, obligately thermophilic bacterium was isolated from a littoral area of North Carolina, and it is herein described and named as a new species. The microorganism, designated strain PTA-1, is a gram-negative, non-sporeforming, nonmotile, pleomorphic rod that can utilize various long-chain -alkanes, 1-alkenes, primary alcohols, or ketones as substrates for growth. It will not grow on nutrient broth or Trypticase soy broth. The organism is an obligate aerobe which grows most rapidly at 60 C with a generation time of 4.0 to 4.5 h at an optimum pH of 7.2 to 7.5 in minimal salts medium with 0.1% -heptadecane as substrate. The temperature range for growth is 42 to 70 C. A deoxyribonucleic acid base composition of 68.8 mol% guanine plus cytosine for this organism was determined by thermal denaturation of isolated deoxyribonucleic acid. The cells contain a pink carotenoid pigment(s) that is most evident after growth at minimal temperatures with acetate as the substrate. It is proposed that this organism be placed in the genus as a new species, to which we give the name The type strain of , PTA-1, has been deposited in the American Type Culture Collection under the number 29033.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error