chlorophyll-a and sodium-sulfide

chlorophyll-a has been researched along with sodium-sulfide* in 2 studies

Other Studies

2 other study(ies) available for chlorophyll-a and sodium-sulfide

Article	Year
Exogenous sodium sulfide improves morphological and physiological responses of a hybrid Populus species to nitrogen dioxide. Journal of plant physiology, 2014, Jun-15, Volume: 171, Issue:10 Gaseous nitrogen dioxide (NO2) can disturb normal plant growth and trigger complex physiological responses. NO2-induced responses are influenced by biotic or abiotic factors. In this study, we investigated the effects of exogenous sodium sulfide (Na2S, 5mmolL(-1)) on epidermis and stomata related physico-chemical responses of hybrid poplar cuttings (Pouplus alba×P. berolinensis) to gaseous NO2 (4μl1(-1)) for three time periods (0, 14 and 48h). We also investigated hydrogen sulfide (H2S), nitrate-nitrogen and nitrate reductase activity (NR) in control and Na2S treated plants. Our results showed that NO2 exposure for 48h led to the decline of NR, maximal PSII quantum yield (Fv/Fm), net photosynthetic rate (Pn), and dark respiration rate (Rd). The maximum rate for the post-illumination carbon dioxide burst (PIB) occurred in 48-h exposed leaves 13-15s after darkening. Moreover, NO2 exposure resulted in a significant increase in nitrogen percentage (from 0 to 33%) and a decrease in the macro and micro-elements of leaf surface. Spraying Na2S aqueous solution on the leaf surfaces significantly increased the thicknesses of palisade/spongy tissue and H2S content. Na2S pretreatment alleviated NO2-caused toxic effects as indicated by increased NR and higher values of Pn, Fv/Fm, and actual photochemical efficiency in light (ФPSII) compared with the control. Na2S pretreatment had no significant impacts on PIB-based photorespiration or elements composition of a leaf surface. Topics: Carbon Dioxide; Chlorophyll; Nitrate Reductase; Nitrates; Nitrogen Dioxide; Photosynthesis; Plant Leaves; Plant Proteins; Plant Transpiration; Populus; Sulfides; Trees	2014
The role of Na2S in anoxygenic photosynthesis and H2 production in the cyanobacterium Nostoc muscorum. Biochemical and biophysical research communications, 1984, Sep-28, Volume: 123, Issue:3 Na2S is known to support anoxygenic photosynthesis in some strains of cyanobacteria and to stimulate H2 production in N2 fixing filaments of Nostoc muscorum. We have shown electron transfer between Na2S and Photosystem I to be dependent on cytochrome b559 which was detected only in vegetative cells. An electron mediator was required to support Na2S driven nitrogenase activity in isolated heterocysts. Na2S was also found to deplete the ATP pool, probably by inhibiting electron transfer from Photosystem I. Topics: Anaerobiosis; Chlorophyll; Cyanobacteria; Cytochrome b Group; Electron Spin Resonance Spectroscopy; Electron Transport; Hydrogen; Kinetics; Nitrogenase; Oxidation-Reduction; Photosynthesis; Photosystem II Protein Complex; Sulfides	1984

Article

Year

Exogenous sodium sulfide improves morphological and physiological responses of a hybrid Populus species to nitrogen dioxide.

Journal of plant physiology, 2014, Jun-15, Volume: 171, Issue:10

Gaseous nitrogen dioxide (NO2) can disturb normal plant growth and trigger complex physiological responses. NO2-induced responses are influenced by biotic or abiotic factors. In this study, we investigated the effects of exogenous sodium sulfide (Na2S, 5mmolL(-1)) on epidermis and stomata related physico-chemical responses of hybrid poplar cuttings (Pouplus alba×P. berolinensis) to gaseous NO2 (4μl1(-1)) for three time periods (0, 14 and 48h). We also investigated hydrogen sulfide (H2S), nitrate-nitrogen and nitrate reductase activity (NR) in control and Na2S treated plants. Our results showed that NO2 exposure for 48h led to the decline of NR, maximal PSII quantum yield (Fv/Fm), net photosynthetic rate (Pn), and dark respiration rate (Rd). The maximum rate for the post-illumination carbon dioxide burst (PIB) occurred in 48-h exposed leaves 13-15s after darkening. Moreover, NO2 exposure resulted in a significant increase in nitrogen percentage (from 0 to 33%) and a decrease in the macro and micro-elements of leaf surface. Spraying Na2S aqueous solution on the leaf surfaces significantly increased the thicknesses of palisade/spongy tissue and H2S content. Na2S pretreatment alleviated NO2-caused toxic effects as indicated by increased NR and higher values of Pn, Fv/Fm, and actual photochemical efficiency in light (ФPSII) compared with the control. Na2S pretreatment had no significant impacts on PIB-based photorespiration or elements composition of a leaf surface.

Topics: Carbon Dioxide; Chlorophyll; Nitrate Reductase; Nitrates; Nitrogen Dioxide; Photosynthesis; Plant Leaves; Plant Proteins; Plant Transpiration; Populus; Sulfides; Trees

2014

The role of Na2S in anoxygenic photosynthesis and H2 production in the cyanobacterium Nostoc muscorum.

Biochemical and biophysical research communications, 1984, Sep-28, Volume: 123, Issue:3

Na2S is known to support anoxygenic photosynthesis in some strains of cyanobacteria and to stimulate H2 production in N2 fixing filaments of Nostoc muscorum. We have shown electron transfer between Na2S and Photosystem I to be dependent on cytochrome b559 which was detected only in vegetative cells. An electron mediator was required to support Na2S driven nitrogenase activity in isolated heterocysts. Na2S was also found to deplete the ATP pool, probably by inhibiting electron transfer from Photosystem I.

Topics: Anaerobiosis; Chlorophyll; Cyanobacteria; Cytochrome b Group; Electron Spin Resonance Spectroscopy; Electron Transport; Hydrogen; Kinetics; Nitrogenase; Oxidation-Reduction; Photosynthesis; Photosystem II Protein Complex; Sulfides

1984