Trees in urban areas provide important ecosystem services and are an essential element of green space. The constant increase artificial light from anthropogenic activities around the world creates photopollution that affects phenology physiology plants. Here we conducted a field study to investigate impacts on six trees (Saraca asoca, Terminalia catappa, Bauhinia variegata, Holoptelea integrifo...

Plant drought tolerance depends on adaptations of the photosynthetic apparatus to changing environments triggered by water deficit. The seedlings three Brassica crops differing in sensitivity, oleracea L. var. capitata—white cabbage, acephala—kale, and rapa pekinensis—Chinese were exposed withholding water. Detailed insight into machinery was carried out when seedling reached a relative content...

Chlorophyll a fluorescence is a highly sensitive, non-destructive, and reliable tool for measuring, rather quickly, photosynthetic efficiency, particularly of Photosystem II (PSII), the water-plastoquinone oxidoreductase. We briefly review here the connection between the fast (up to 2 s) chlorophyll fluorescence rise and PSII, as well as the empirical use of the fluorescence rise kinetics in un...

Chloride ions can be translocated across cell membranes through Cl(-) channels or Cl(-)/H(+) exchangers. The thylakoid-located member of the Cl(-) channel CLC family in Arabidopsis thaliana (AtCLCe) was hypothesized to play a role in photosynthetic regulation based on the initial photosynthetic characterization of clce mutant lines. The reduced nitrate content of Arabidopsis clce mutants sugges...

In the present work, effectiveness of chlorophyll a fluorescence as quick tool to detect effect Pb–stress on Limbarda crithmoides and Helianthus annuus species, when exposed increasing Pb concentrations (0–500 µmol.L–1) for 45 days, was evaluated. The level in plant leaves, well fresh weight content shoots roots both were also determined. L. did not show any significant variation photochemical ...