Differential response of photosynthetic apparatus of cyanobacterium Nostoc muscorum to Pb and Cd toxicity
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| 024 | 7 | 0 | |a 10.1007/s11099-015-0096-3 |2 doi |
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| 245 | 0 | 0 | |a Differential response of photosynthetic apparatus of cyanobacterium Nostoc muscorum to Pb and Cd toxicity |h [Elektronische Daten] |c [S. Dixit, D. Singh] |
| 520 | 3 | |a Nostoc muscorum cells showed metal-induced decrease in the relative growth, pigment contents, O2 evolution, and Hill activity in response to lead (Pb2+) and cadmium (Cd2+) treatment, which was further accentuated with increase in metal exposure time and metal concentration. I50 concentrations (50% growth inhibitory concentrations) of Pb2+ and Cd2+ for growth of N. muscorum were 55 and 21 μg mL−1, respectively. These results indicated that the cells of N. muscorum were more susceptible to Cd2+ in comparison to Pb2+. The O2 production was relatively more sensitive to both heavy metals (I50: 16 and 10 μg mL−1 of Pb2+ and Cd2+, respectively) than the Hill activity (I50: 61 and 39 μg mL−1 of Pb2+ and Cd2+, respectively). Further, measurement of Hill activity in the presence of metals and electron donors showed that inhibition sites of both Pb2+ and Cd2+ were located on the oxidizing site of PSII. The chlorophyll a (Chl a) and phycobilisome (PB) fluorescence emission spectra showed that energy transfer from Chl a and PB to PSII reaction center was more susceptible to Cd2+ than Pb2+. | |
| 540 | |a The Institute of Experimental Botany, 2015 | ||
| 690 | 7 | |a chlorophyll fluorescence |2 nationallicence | |
| 690 | 7 | |a electrons donors |2 nationallicence | |
| 690 | 7 | |a heavy metals |2 nationallicence | |
| 690 | 7 | |a Hill activity |2 nationallicence | |
| 690 | 7 | |a oxygen evolution |2 nationallicence | |
| 690 | 7 | |a Chl a : chlorophyll a |2 nationallicence | |
| 690 | 7 | |a DCPIP : 2,6-dichlorophenol-1-indophenol |2 nationallicence | |
| 690 | 7 | |a DPC : 1,5-diphenyl carbazide |2 nationallicence | |
| 690 | 7 | |a I50 : 50% inhibitory concentration |2 nationallicence | |
| 690 | 7 | |a PB(s) : phycobilisome(s) |2 nationallicence | |
| 690 | 7 | |a PC : phycocyanin |2 nationallicence | |
| 700 | 1 | |a Dixit |D S. |u Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Raibareilly Road, 226 025, Lucknow, India |4 aut | |
| 700 | 1 | |a Singh |D D. |u Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Raibareilly Road, 226 025, Lucknow, India |4 aut | |
| 773 | 0 | |t Photosynthetica |d The Institute of Experimental Biology of the Czech Academy of Sciences |g 53/2(2015-06-01), 223-230 |x 0300-3604 |q 53:2<223 |1 2015 |2 53 |o 11099 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s11099-015-0096-3 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s11099-015-0096-3 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Dixit |D S. |u Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Raibareilly Road, 226 025, Lucknow, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Singh |D D. |u Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Raibareilly Road, 226 025, Lucknow, India |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Photosynthetica |d The Institute of Experimental Biology of the Czech Academy of Sciences |g 53/2(2015-06-01), 223-230 |x 0300-3604 |q 53:2<223 |1 2015 |2 53 |o 11099 | ||