Geochemical and physiological indices gained at the background area under anthropogenic impact were compared. The study sites comprise 30 sample areas each. Overall, 600 samples of pine needles designated for delayed chlorophyll fluorescence measurement as well 60 soil needle correspondingly selected to perform geochemical analysis. biological uptake urban ecosystems is represented in range: Mn...

The photosynthetic apparatus of higher plants and algae is composed of plastid- and nuclear-encoded components, therefore the expression of photosynthesis genes needs to be highly coordinated. Expression is regulated by various factors, one of the most important of which is light. Photosynthesis functions as a sensor for such light signals, and the redox state of photosynthetic electron transpo...

The rate of photosynthesis and changes in chlorophyll fluorescence parameters of transformed tobacco plants grown in vitro and after their transplantation in natural conditions were studied. It was found that in vitro conditions limited photosynthetic incorporation of CO2 in the leaves of transformants probably because of restricted gas exchange in the vials. In vitro conditions also caused low...

The air pollution stress around the thermal power plant lead to the significant reduction in size and biomass of root and shoot, photosynthetic rate, stomatal conductance, intercellular CO2 concentration, photosynthetic pigments and photosynthetic area of Croton bonplandianum. The resulting stresses of air pollution and reduced foliage further affected the over all morphology and physiology of ...

Solar induced chlorophyll fluorescence (SIF) emissions of photosynthetically active plants retrieved from space-borne observations have been used to improve models of global primary productivity. However, the relationship between SIF and photosynthesis in diurnal and seasonal cycles is still not fully understood, especially at large spatial scales, where direct measurements of photosynthesis ar...

The seasonal dynamics of cell density and photosynthetic pigment contents of the zooxanthellae hosted by Montastrea cavernosa were investigated on coastal reefs off Picãozinho (0642’05”/0707’30”S and 3448’37”/3450’00” W), Northeast Brazil between September 1999 and 2000. A distinct pattern of these parameters was found: cell numbers were greater during the rainy season (autumn/winter) while pho...

ebria tripartita (schumann) lemmermann, 1899, a non-photosynthetic flagellate was identified from the southern coast of the caspian sea in december 2012. water temperature at the sampling time was 10 ºc.  the abundance of total phytoplankton cells was 3 × 106 cells.l-1, while e. tripartita with 2 × 10 3 cells. l-1 included 0.75% of phytoplankton community. water quality parameters were recorded...