期刊
INTERNATIONAL JOURNAL OF PLANT SCIENCES
卷 161, 期 2, 页码 265-270出版社
UNIV CHICAGO PRESS
DOI: 10.1086/314255
关键词
9,10-anthraquinone; cyanobacteria; 2-methylisoborneol; off-flavor; Oscillatoria
The natural compound 9,10-anthraquinone was found to inhibit the growth of the musty odor-producing cyanobacterium Oscillatoria perornata at a low concentration (1 mu M) in previous laboratory studies. In this study, the mode of action of 9,10-anthraquinone was investigated by observing ultrastructural changes in O. perornata and by monitoring chlorophyll fluorescence as an indicator of photosynthetic efficiency. Results indicate that 9,10-anthraquinone inhibits photosynthetic electron transport, probably at PSII, and thereby affects growth. Moreover, 9,10-anthraquinone treatment caused thylakoid disorganization and reduced the number of ribosomes in O. perornata. The thylakoid disorganization is identical to reported modification in a cyanobacterium treated with simazine, a PSII inhibitor.
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