RRC ID 21671
著者 Harada K, Ozaki K, Tsuzuki S, Kato H, Hasegawa M, Kuroda EK, Arii S, Tsuji K.
タイトル Blue color formation of cyanobacteria with beta-cyclocitral.
ジャーナル J Chem Ecol
Abstract Volatile compounds, such as beta-cyclocitral, geosmin, and 2-methylisoborneol, from cyanobacteria showed a lytic activity against cyanobacteria. Particularly, beta-cyclocitral caused an interesting color change in the culture broth from green to blue during the lysis process. In the present study, the lytic behavior of various cyanobacteria with beta-cyclocitral was investigated, and a mechanism for the blue color formation was developed. beta-Cyclocitral lysed both the laboratory strains of any genera and bloom samples including many species of cyanobacteria, and caused the characteristic color change from green to blue. beta-Cyclocitral provided a characteristic behavior, such that the absorption maxima of chlorophyll-a and beta-carotene disappeared, but that of phycocyanin still remained after 12 h, which indicated that beta-cyclocitral decomposed chlorophyll-a and beta-carotene rapidly, so that the inherent colors from the tolerant water-soluble pigments became observable in the cultured broth. This phenomenon was confirmed by another experiment using Phormidium (NIES-611), which showed a pink color derived from phycoerythrin. beta-Cyclocitral was more easily oxidized when compared with similar aldehyde compounds, so that the pH of the solution quickly decreased to 4.5. An oxidation product of beta-cyclocitral in water solution was isolated and identified as 2,6,6-trimethylcyclohexene-1-carboxylic acid. This study provides support that beta-cyclocitral derived from cyanobacteria plays an important role in the lysis of cyanobacteria and participates in the blue color formation under natural conditions.
巻・号 35(11)
ページ 1295-301
公開日 2009-11-1
DOI 10.1007/s10886-009-9706-5
PMID 19936836
MeSH Absorption Aldehydes / metabolism Aldehydes / pharmacology* Color Culture Media Cyanobacteria / cytology Cyanobacteria / drug effects* Cyanobacteria / growth & development Cyanobacteria / metabolism* Diterpenes / metabolism Diterpenes / pharmacology* Hydrogen-Ion Concentration Photosynthesis / drug effects Pigmentation / drug effects* Spectrum Analysis
IF 2.117
引用数 27
WOS 分野 ECOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
藻類 NIES-808 NIES-73 NIES-611 NIES-112 NIES-102 NIES-103 NIES-298