Elucidation and genetic intervention of CO2 concentration mechanism in Chlamydomonas reinhardtii for increased plant primary productivity.

Elucidation and genetic intervention of CO2 concentration mechanism in Chlamydomonas reinhardtii for increased plant primary productivity. J Biosci. 2020;45: Authors: Mallikarjuna K, Narendra K, Ragalatha R, Rao BJ Abstract The rising global population is forcing the need for adapting alternative sustainable technologies for enhanced crop productivity. The CO2 Concentration Mechanisms (CCMs) evolved in algae to counter the inefficient CO2 fixing enzyme, RuBisCo and slower diffusion of CO2 in water offers good scope for the above purpose. The CCMs are single-celled CO2 supply mechanisms that depend on multiple CO2/HCO3 transporters and acclimation states and accumulate 100-fold more CO2 than low CO2 environments. Although some insights have been obtained regarding the CCMs of blue-green algae and green algae like Chlamydomonas reinhardtii, further progress needs to take place to understand the molecular and biochemical basis for intracellular transport of CO2. In this review, complete information pertaining to the core CCM is presented and discussed in light of the available literature. In addition to this, information on CO2/HCO3 sensing, photo-acclimation in low CO2, liquid-like nature of pyrenoid, untapped potential of high CO2 responses and high CO2 requiring mutants, and prospects of engineering CCM components into higher plants are presented and discussed. PMID: 33051409 [PubMed - in process]
Source: Journal of Biosciences - Category: Biomedical Science Authors: Tags: J Biosci Source Type: research