Ultraviolet B (UV-B) (280–315 nm) and ultraviolet A (UV-A) (315–400 radiation comprise small portions of the solar but regulate many aspects plant development, physiology metabolism. Until now, how plants respond to UV-B in presence different light qualities is poorly understood. This study aimed assess effects a low dose (0.912 ± 0.074 kJ m –2 day –1 , at 6 h daily UV exposure) combination wit...

Space missions have enabled testing how microorganisms, animals and plants respond to extra-terrestrial, complex and hazardous environment in space. Photosynthetic organisms are thought to be relatively more prone to microgravity, weak magnetic field and cosmic radiation because oxygenic photosynthesis is intimately associated with capture and conversion of light energy into chemical energy, a ...

Quality inferiority in cool-season turfgrass due to drought, heat, and a combination of both stresses is predicted to be more prevalent in the future. Understanding the various response to heat and drought stress will assist in the selection and breeding of tolerant grass varieties. The objective of this study was to investigate the behavior of antioxidant metabolism and photosystem II (PSII) p...

Coral photophysiology has been studied intensively from the colony scale down to the scale of single fluorescent pigment granules as light is one of the key determinants for coral health. We studied the photophysiology of the oral and aboral symbiont band of scleractinian coral Montastrea curta to investigate if different acclimation to light exist in hospite on a polyp scale. By combined use o...

Ozone (O3) is the most phytotoxic air pollutant for global forests, with decreased photosynthesis widely regarded as one of its most common effects. However, controversy exists concerning the mechanism that underlies the depressing effects of O3 on CO2 assimilation. In the present study, seedlings of Cinnamomum camphora, a subtropical evergreen tree species that has rarely been studied, were ex...

Calcium enhances turfgrass response to salt stress. However, little is known about PSII photochemical changes when exogenous calcium was applied in salinity-stressed turfgrass. Here, we probe into the rearrangements of PSII electron transport and endogenous ion accumulation in tall fescue (Festuca arundinacea Schreber) treated with exogenous calcium under salt stress. Three-month-old seedlings ...

The seed progeny photosynthesis intensity and the photosynthetic apparatus state of genus Pinus species different life forms were studied in seasonal dynamics: P. sibirica is an upright tree, pumila a prostrate species. age was twelve years old. both increased from May to July, maximum July amounted 9.2 mg CO2 mg-1 fr. m. h-1 Siberian stone pine 7.8 dwarf pine, August assimilation activity bega...