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• W2943905050 endingPage "304" @default.
• W2943905050 startingPage "295" @default.
• W2943905050 abstract "Evidence is compiled to demonstrate a redox scale within Earth's photosynthesisers that correlates the specificity of their RuBisCO with organismal metabolic tolerance to anoxia, and ecological selection by dissolved O2/CO2 and nutrients. The Form 1B RuBisCO found in the chlorophyte green algae, has a poor selectivity between the two dissolved substrates, O2 and CO2, at the active site. This enzyme appears adapted to lower O2/CO2 ratios, or more “anoxic” conditions and therefore requires additional energetic or nutrient investment in a carbon concentrating mechanism (CCM) to boost the intracellular CO2/O2 ratio and maintain competitive carboxylation rates under increasingly high O2/CO2 conditions in the environment. By contrast the coccolithophores and diatoms evolved containing the more selective Rhodophyte Form 1D RuBisCO, better adapted to a higher O2/CO2 ratio, or more oxic conditions. This Form 1D RuBisCO requires lesser energetic or nutrient investment in a CCM to attain high carboxylation rates under environmentally high O2/CO2 ratios. Such a physiological relationship may underpin the succession of phytoplankton in the Phanerozoic oceans: the coccolithophores and diatoms took over the oceanic realm from the incumbent cyanobacteria and green algae when the upper ocean became persistently oxygenated, alkaline and more oligotrophic. The facultatively anaerobic green algae, able to tolerate the anoxic conditions of the water column and a periodically inundated soil, were better poised to adapt to the fluctuating anoxia associated with periods of submergence and emergence and transition onto the land. The induction of a CCM may exert a natural limit to the improvement of RuBisCO efficiency over Earth history. Rubisco specificity appears to adapt on the timescale of ∼100 Myrs. So persistent elevation of CO2/O2 ratios in the intracellular environment around the enzyme, may induce a relaxation in RuBisCO selectivity for CO2 relative to O2. The most efficient RuBisCO for net carboxylation is likely to be found in CCM-lacking algae that have been exposed to hyperoxic conditions for at least 100 Myrs, such as intertidal brown seaweeds." @default.
• W2943905050 created "2019-05-16" @default.
• W2943905050 creator A5036701162 @default.
• W2943905050 creator A5082449899 @default.
• W2943905050 date "2019-08-01" @default.
• W2943905050 modified "2023-10-01" @default.
• W2943905050 title "Upper ocean oxygenation, evolution of RuBisCO and the Phanerozoic succession of phytoplankton" @default.
• W2943905050 cites W118675486 @default.
• W2943905050 cites W1583623364 @default.
• W2943905050 cites W1677532904 @default.
• W2943905050 cites W1787511350 @default.
• W2943905050 cites W1833387197 @default.
• W2943905050 cites W1963745704 @default.
• W2943905050 cites W1971692585 @default.
• W2943905050 cites W1974156540 @default.
• W2943905050 cites W1974252038 @default.
• W2943905050 cites W1975042304 @default.
• W2943905050 cites W1976272190 @default.
• W2943905050 cites W1987299022 @default.
• W2943905050 cites W1991936309 @default.
• W2943905050 cites W1994180220 @default.
• W2943905050 cites W1994684689 @default.
• W2943905050 cites W1997135327 @default.
• W2943905050 cites W2000106079 @default.
• W2943905050 cites W2004579979 @default.
• W2943905050 cites W2005981729 @default.
• W2943905050 cites W2017726753 @default.
• W2943905050 cites W2018516735 @default.
• W2943905050 cites W2031481912 @default.
• W2943905050 cites W2034451674 @default.
• W2943905050 cites W2034528295 @default.
• W2943905050 cites W2038138307 @default.
• W2943905050 cites W2039525022 @default.
• W2943905050 cites W2042764062 @default.
• W2943905050 cites W2043465116 @default.
• W2943905050 cites W2053348032 @default.
• W2943905050 cites W2053451930 @default.
• W2943905050 cites W2054922198 @default.
• W2943905050 cites W2055434212 @default.
• W2943905050 cites W2056519236 @default.
• W2943905050 cites W2063397359 @default.
• W2943905050 cites W2066485538 @default.
• W2943905050 cites W2068307966 @default.
• W2943905050 cites W2072229261 @default.
• W2943905050 cites W2094934876 @default.
• W2943905050 cites W2097616658 @default.
• W2943905050 cites W2098840374 @default.
• W2943905050 cites W2099263747 @default.
• W2943905050 cites W2103234077 @default.
• W2943905050 cites W2104222134 @default.
• W2943905050 cites W2105467069 @default.
• W2943905050 cites W2109935202 @default.
• W2943905050 cites W2110561521 @default.
• W2943905050 cites W2110714179 @default.
• W2943905050 cites W2120468900 @default.
• W2943905050 cites W2123495298 @default.
• W2943905050 cites W2124019798 @default.
• W2943905050 cites W2125073348 @default.
• W2943905050 cites W2129174088 @default.
• W2943905050 cites W2129450594 @default.
• W2943905050 cites W2130173770 @default.
• W2943905050 cites W2130565756 @default.
• W2943905050 cites W2130675904 @default.
• W2943905050 cites W2133082436 @default.
• W2943905050 cites W2133514781 @default.
• W2943905050 cites W2136668140 @default.
• W2943905050 cites W2139406905 @default.
• W2943905050 cites W2144459968 @default.
• W2943905050 cites W2144920118 @default.
• W2943905050 cites W2146206588 @default.
• W2943905050 cites W2148587990 @default.
• W2943905050 cites W2150303148 @default.
• W2943905050 cites W2153950899 @default.
• W2943905050 cites W2154733099 @default.
• W2943905050 cites W2159308287 @default.
• W2943905050 cites W2162846367 @default.
• W2943905050 cites W2163066505 @default.
• W2943905050 cites W2165259257 @default.
• W2943905050 cites W2170751345 @default.
• W2943905050 cites W2173033023 @default.
• W2943905050 cites W2212477841 @default.
• W2943905050 cites W2332212107 @default.
• W2943905050 cites W2344478091 @default.
• W2943905050 cites W2346095656 @default.
• W2943905050 cites W2523746176 @default.
• W2943905050 cites W2621182405 @default.
• W2943905050 cites W2726266635 @default.
• W2943905050 cites W2735576355 @default.
• W2943905050 cites W2738851973 @default.
• W2943905050 cites W2746569193 @default.
• W2943905050 cites W2749763761 @default.
• W2943905050 cites W2752077065 @default.
• W2943905050 cites W2767600900 @default.
• W2943905050 cites W2793818469 @default.
• W2943905050 cites W2806766646 @default.
• W2943905050 cites W2807455978 @default.
• W2943905050 doi "https://doi.org/10.1016/j.freeradbiomed.2019.05.006" @default.
• W2943905050 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6856715" @default.

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