RT Journal Article
T1 Correlative adaptation between Rubisco and CO2-concentrating mechanisms in seagrasses
A1 Capó-Bauçà, Sebastià
A1 Íñiguez Moreno, Concepción
A1 Aguiló-Nicolau, Pere
A1 Galmés, Jeroni
K1 Algas -- Fisiología
K1 Enzimas -- Cinética
K1 Enzimas -- Análisis
AB Submerged angiosperms sustain some of the most productive and diverse ecosystems worldwide. However, their carbon acquisition and assimilation mechanisms remain poorly explored, missing an important step in the evolution of photosynthesis during the colonization of aquatic environments by angiosperms. Here, we reveal a convergent Rubisco kinetic adaptation in phylogenetically distant seagrass species that shared catalytic efficiencies and CO2 and O2 affinities up to 3-times lower than those observed in phylogenetically closer angiosperms from terrestrial, freshwater and brackish water habitats. This Rubisco kinetic convergence was found to correlate with the effectiveness of seagrass CO2 concentrating mechanisms (CCMs), which likely evolved in response to the constant CO2 limitation in marine environments. The observed Rubisco kinetic adaptation in seagrasses more closely resembles that seen in eukaryotic algae operating CCMs rather than that reported in terrestrial C4 plants. Thus, our results demonstrate a general pattern of co-evolution between Rubisco function and biophysical CCM effectiveness that traverses across distantly related aquatic lineages.
PB Nature Research
YR 2022
FD 2022
LK https://hdl.handle.net/10630/34149
UL https://hdl.handle.net/10630/34149
LA eng
NO Capó-Bauçà, S., Iñiguez, C., Aguiló-Nicolau, P. et al. Correlative adaptation between Rubisco and CO2-concentrating mechanisms in seagrasses. Nat. Plants 8, 706–716 (2022). https://doi.org/10.1038/s41477-022-01171-5
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026