James R. Andrews

TL;DR: Measurements of the quantum efficiencies of photosynthetic electron transport through photosystem II (phiPSII) and CO2 assimilation (phiCO2) were made simultaneously on leaves of maize crops in the United Kingdom during the early growing season, when chilling conditions were experienced, supporting the hypothesis that the relative flux of photosynthesis reducing equivalents to O2 via the Mehler reaction is higher when leaves develop under chilling conditions.

TL;DR: It is concluded that measurements of Fv/Fm and Φ PSII provide useful, rapid and non-invasive probes of the photosynthetic performance of maize leaves in the field during periods of chill-induced photoinhibition.

TL;DR: It is concluded that LHC II is important to balance the distribution of excitation energy between PS I and PS II populations over a wide range of photon flux densities and may also be important in determining the quantum efficiency of PS II photochemistry by reducing the rate of quenching ofexcitation energy in the PS II primary antennae.

TL;DR: It is concluded that State transitions in C3 leaves are associated with phosphorylation-induced modifications of the PS II antennae, but these changes do not serve to optimise the use of light absorbed by the leaf for CO2 assimilation.

TL;DR: The crystallographic evidence indicates that the precursor polypeptide is a tandem duplicate and is structurally redundant and it was found that the purified precursor protein possesses a substantial level of alpha-d-mannosidase activity and seems to share a number of other physical and chemical properties with that enzyme.