TABLE 1

Characteristics of copiotrophs versus oligotrophs and their TCS system genesa

GenusExample
genome
size (bp)
Example %
growth rate
(per day)
Lifestyle(s)HPK/100
genes
RR/HPK
ratio
% hybrid
HPKs
Reference
Pelagibacter1,200–1,4000.4–0.58Oligotroph0.3870.83Typically 059
Prochlorococcus1,200–2,0000.51–0.83Oligotroph0.761.22Typically 060
Synechococcus1,500–3,0001Oligotroph1.0051.230–4060
Trichodesmium∼5,0000.29Oligotroph0.6940.75315–3561
Crocosphaera∼6,0000.5Oligotroph0.7230.992∼3562
Roseobacter∼5,0001.45Varies/copiotroph0.7550.99110–4063
Vibrio∼5,000Up to 14.3Copiotroph1.251.0725–5064
Alteromonas4,000–4,5006Copiotroph1.431.06∼4065
Pseudoalteromonas3,000–5,000∼30Copiotroph1.51.140–5066
  • a HPK, histidine kinase; RR, response regulator.