EFFECTS OF ILLUMINATION INTENSITY ON BACTERIOCHLOROPHYLL-C HOMOLOG DISTRIBUTION IN CHLOROFLEXUS-AURANTIACUS GROWN UNDER CONTROLLED CONDITIONS

被引：25

作者：

LARSEN, KL

COX, RP

MILLER, M

机构：

[1] Institute of Biochemistry, Odense University, Odense M, DK-5230

来源：

PHOTOSYNTHESIS RESEARCH | 1994年 / 41卷 / 01期

关键词：

CHLOROSOME; GREEN BACTERIA; CONTINUOUS CULTURE; TURBIDOSTAT;

D O I：

10.1007/BF02184155

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Green photosynthetic bacteria contain a mixture of stereoisomers and homologs of their major light harvesting pigment, bacteriochlorophyll (BChl) c. We have determined the distribution of photosynthetic pigments in the green filamentous bacterium Chloroflexus aurantiacus grown in turbidostat culture under light-limited conditions at 5 different illumination intensities. Pigments were extracted from isolated cells, analyzed by HPLC, and the homologs of BChl c identified by their mass spectra. The ratio between BChl c, BChl a and carotenoid remained constant at low illumination intensities; at higher intensities BChl a and carotenoid increased in parallel compared to BChl c. The BChl c homolog distribution changed even under conditions where the ratio of the total amount to the other pigments was unchanged, but there were no evidence for a constant stoichiometric ratio between any pair of homologs.

引用

页码：151 / 156

页数：6

共 20 条

[1]

Amesz J., 1991, VARIATIONS AUTOTROPH, P99

[2] RED SHIFT OF ABSORPTION MAXIMA IN CHLOROBIINEAE THROUGH ENZYMATIC METHYLATION OF THEIR ANTENNA BACTERIOCHLOROPHYLLS [J].