Table 3 Available measurements of 13C/12C isotope effects (ε) from diverse forms of purified RuBisCO enzyme, measured under saturating CO2 levels.
From: The curious consistency of carbon biosignatures over billions of years of Earth-life coevolution
Group | Species | RuBisCO form | 13C/12C isotope effect, ε (‰) | Isotope effect reference |
|---|---|---|---|---|
Proteobacteria | Solemya velum bivalve symbiont | IA | 24.4 | [19] |
Cyanobacteriaa | Prochlorococcus marinus MIT9313 | IA | 24.0 | [16] |
Cyanobacteriaa | Synechococcus elongatus PCC6301 | IB | 22.0 | [17] |
Land plant | Flaveria bidentis | IB | 27.8 | [18] |
Land plant | Flaveria floridana | IB | 28.6 | [18] |
Land plant | Nicotiana tabacum | IB | 29 | [18] |
Land plant | Spinacia oleracea | IB | 28.2–30.3 | |
Proteobacteria | Ralstonia eutropha | IC | 19.0 | [136] |
Proteobacteria | Rhodobacter sphaeroides | IC | 22.4 | [136] |
Coccolithophore | Emiliana huxleyi | ID | 11.1 | [137] |
Diatom | Skeletonema costatum | ID | 18.5 | [27] |
Proteobacteria | Rhodospirillum rubrum | II | 17.8–23.8 | |
Proteobacteria | Riftia pachyptila symbiont | II | 19.5 | [74] |
