Gerencsér László; Maróti Péter: Fluorescence induction reveals organization of antenna and reaction center in photosynthetic bacteria. In: Acta biologica Szegediensis, (51) 1. pp. 27-32. (2007)
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The photochemical phase of the bacteriochlorophyll fluorescence induction generated by rectangular shape of laser diode illumination was measured in different organization levels {whole cell, chromatophore and isolated reaction center protein) of carotenoidtess mutant of purple photosynthetic bacterium Rhodobacter sphaeroides R-26.1. While the antenna containing species showed large and positive variable fluorescence (fj relative to the constant (initial) fluorescence (Fa) {FJF^ ~ 4.5 in whole ceil), the isolated RC had smaller and negative change (FJF - -0.6). The variable fluorescence of the ceils increased steadily in the function of the age of the cultivated bacterium: FJF0 - 2 for young ceils and FJF0 - 4.5 fór old ceils while the rise time of the fluorescence induction remained constant (- 2 ms). In chromatophore, 7 times higher rate was measured than in isolated reaction center under identical experimental conditions. The results obtained under different conditions are interpreted by an extended version of the Lavergne-Trissl model where the simultaneously measured fluorescence inductions from the antenna and the RC can be separately expressed.
| Mű típusa: | Cikk, tanulmány, mű |
|---|---|
| Rovatcím: | Articles |
| Befoglaló folyóirat/kiadvány címe: | Acta biologica Szegediensis |
| Dátum: | 2007 |
| Kötet: | 51 |
| Szám: | 1 |
| ISSN: | 1588-385X |
| Oldalak: | pp. 27-32 |
| Nyelv: | angol |
| Befoglaló mű URL: | http://acta.bibl.u-szeged.hu/39252/ |
| Kulcsszavak: | Természettudomány, Biológia |
| Megjegyzések: | Bibliogr.: 32. p.; Abstract |
| Feltöltés dátuma: | 2016. okt. 17. 09:24 |
| Utolsó módosítás: | 2021. ápr. 13. 10:12 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/22814 |
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