Parkinson's disease (PD) is a chronic neurodegenerative disorder having close relationship with oxidative stress induced by reactive oxygen species (ROS). Cortex Fraxini (QP) is a kind of traditional Chinese medicinal herb with antioxidant properties. It may be a potential candidate for preventing the development of chronic neurodegenerative diseases. Thus, the key objective of the current stud...

In higher plants, high light conditions trigger the activation of non-photochemical quenching (NPQ), a process of photoprotective light energy dissipation, via acidification of the chloroplast lumen. Spectral changes occurring in the neoxanthin domain of the major light harvesting antenna complex (LHCII) have previously provided indirect evidence of a protein conformational switch during NPQ. W...

KEA3 is a thylakoid membrane localized K+ /H+ antiporter that regulates photosynthesis by modulating two components of proton motive force (pmf), the proton gradient (∆pH) and the electric potential (∆ψ). We identified a mutant allele of KEA3, disturbed proton gradient regulation (dpgr) based on its reduced non-photochemical quenching (NPQ) in artificial (CO2 -free with low O2 ) air. This pheno...

Under natural conditions, plants are exposed to rapidly changing light intensities. To acclimate to such fluctuations, plants have evolved adaptive mechanisms that optimally exploit available light energy and simultaneously minimise damage of the photosynthetic apparatus through excess light. An important mechanism is the dissipation of excess excitation energy as heat which can be measured as ...

photochemical quenching (q NPQ ) was measured using a pulse amplitude modulated fluorometer. The q NPQ The possible interaction of two stresses, UV-B radiincreased with increasing Cd, while the combination ation and cadmium, applied simultaneously, was of cadmium and UV-B reduced the q NPQ compared to investigated in Brassica napus L. cv. Paroll with that in plants exposed only to cadmium or UV...

The PsbS protein plays an important role in dissipating excess light energy as heat in photosystem II (PSII). However, the physiological importance of PsbS under naturally fluctuating light has not been quantitatively estimated. Here we investigated energy allocation in PSII in PsbS-suppressed rice transformants (ΔpsbS) under both naturally fluctuating and constant light conditions. Under const...

A catalytic manganese (Mn) cluster is required for the oxidation of water in the oxygen-evolving complex (OEC) of photosystem II (PSII) in plants. Despite this essential role of Mn in generating the electrons driving photosynthesis, limited information is available on how Mn deficiency affects PSII functionality. We have here used parameters derived from measurements of fluorescence induction k...

Introduction Industrial applications of lentil (LP) and quinoa (QP) proteins are limited due to their relatively poor water solubility. In this study, a combination protein-protein interaction (PPI) fermentation was used improve the functionality nutritional value LP by conjugating them with QP. The reaction conditions between QP for producing these conjugates were established. Methods ratio eq...

It is known that Jovian radio and high energy electron emissions are observed near Earth. The question we address in this study whether the quasi-periodic ~10 h ~40/15–20 min (QP-10 h, QP-40/15–20 min) energetic particle magnetic field periodicities by Ulysses during its distant encounter with Jupiter 2003 were also detectable as far Earth’s orbit. Surprisingly, found at end of extreme Hallowee...