Phytoplasma infections are able to limit the lettuce growth around world. The alterations of biochemical contents in host physiology following phytoplasma infection remain be elucidated. In this study, changes total protein and chlorophyll content, proline, malondialdehyde (MDA) accumulation, peroxidase (POD) catalase (CAT) enzyme levels were investigated leaves plant after Candidatus asteris i...

Leaf senescence is a typical symptom in plants exposed to dark and may be regulated by plant growth regulators. The objective of this study was to determine whether exogenous application of melatonin (N-acetyl-5-methoxytryptamine) suppresses dark-induced leaf senescence and the effects of melatonin on reactive oxygen species (ROS) scavenging system and chlorophyll degradation pathway in perenni...

Short-wavelength-sensitive (SWS) resolution acuity has been reported to be limited by the density of the responding ganglion cells for people without appreciable age-related lenticular change. This study measured the robustness of SWS-cone acuity and contrast sensitivity (CS) to simulated lens yellowing and opacification. Resolution acuity at 8 deg eccentricity proved robust to significant amou...

Mirror augmented photovoltaic (MAPV) systems utilize low cost mirrors to couple more light into a photovoltaic (PV) absorber. By increasing the light absorbed, they are expected to produce less expensive electricity. As a substrate candidate for back surface reflector mirrors, two grades of PMMA have been exposed to UV stress from two sources at two intensities for two doses in an effort to see...

Abstract With the finest biochemical and molecular approaches, convincing explorative strategies, long-term vision, Stefan Hörtensteiner succeeded in elucidating pathway responsible for chlorophyll degradation. After having contributed to identification of key degradation products course past 25 years, he gradually identified characterized most crucial players PAO/phyllobilin chlorophyll. He wa...