Globally, photosynthesis accounts for the largest flux of CO₂ from the atmosphere into ecosystems and is the driving process for terrestrial ecosystem function. The importance of accurate predictions of photosynthesis over a range of plant growth conditions led to the development of a C₃ photosynthesis model by Farquhar, von Caemmerer & Berry that has become increasingly important as society pl...

C4 photosynthesis represents a most remarkable case of convergent evolution of a complex trait, which includes the reprogramming of the expression patterns of thousands of genes. Anatomical, physiological, and phylogenetic and analyses as well as computational modeling indicate that the establishment of a photorespiratory carbon pump (termed C2 photosynthesis) is a prerequisite for the evolutio...

intra-specific variation in responses of diurnal and long-term photosynthesis, stomatal conductance, chlorophyll fluorescence, and respiration in spring wheat (triticum aestivum l.) to salinity was investigated using two tolerant cultivars (cr and kharchia-65) and a sensitive one (ghods). plants were grown in sand culture in controlled environment at selected levels of salinity (5 as control, 1...

Oula Ghannoum ARC Centre of Excellence for Translational Photosynthesis, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia [email protected] Journal of Experimental Botany (2016) 67 (3): 557–559 doi:10.1093/jxb/erw009 In the above article incorrect units were given for intrinsic leaf TEi in the table forming part of ...

Artificial photosynthesis, modeled on natural light-driven oxidation of water in Photosystem II, holds promise as a sustainable source of reducing equivalents for producing fuels. Few robust wateroxidation catalysts capable of mediating this difficult four-electron, four-proton reaction have yet been described. We report a new method for generating an amorphous electrodeposited material, princi...

Living cells use a variety of regulatory network motifs for accurate gene expression in response to changes in their environment or during differentiation processes. In Rhodobacter sphaeroides, a complex regulatory network controls expression of photosynthesis genes to guarantee optimal energy supply on one hand and to avoid photooxidative stress on the other hand. Recently, we identified a mix...

Plants, algae, and cyanobacteria perform photosynthesis with the resultant production of oxygen, which supports all organisms that consume it through their respiration. This type of photosynthesis is an indispensable part of the global oxygen flux. However, another type of photochemical reaction , photosynthesis without oxygen production, exists, and has been designated anoxygenic photosynthesi...

In addition to photosynthetic phosphorylation recent work has also provided direct experimental evidence (10-14) for the often asserted but never previously demonstrated capacity of isolated chloroplasts to assimilate CO2 photosynthetically to the level of carbohydrates. CO2 assimilation by isolated chloroplasts was found to be a dark process (15) dependent on a photochemically generated “assim...