Interspecific variation in Rubisco CO/O specificity along the leaf economic spectrum across 23 woody angiosperm plants in the Pacific islands.

The coordinated interspecific variation in leaf traits and leaf lifespan is known as the leaf economic spectrum (LES). The limitation of CO diffusion to chloroplasts within the lamina is significant in C photosynthesis, resulting in a shortage of CO for Rubisco. Although Rubisco CO/O specificity (S) should be adaptively adjusted in response to the interspecific variation in CO concentrations [CO] associated with Rubisco, S variations across species along the LES remain unknown.