A cyanobacterium that contains chlorophyll f--a red-absorbing photopigment.
A Chl f-containing filamentous cyanobacterium was purified from stromatolites and named as Halomicronema hongdechloris gen., sp. nov. after its phylogenetic classification and the morphological characteristics. Hongdechloris contains four main carotenoids and two chlorophylls, a and f. The ratio of Chl f to Chl a is reversibly changed from 1:8 under red light to an undetectable level of Chl f under white-light culture conditions. Phycobiliproteins were induced under white light growth conditions. A fluorescence emission peak of 748 nm was identified as due to Chl f. The results suggest that Chl f is a red-light inducible chlorophyll.
School of Biological Sciences (A08), University of Sydney, NSW 2006, Australia. min.chen@sydney.edu.au
Min
M
Chen
Yaqiong
Y
Li
Debra
D
Birch
Robert D
RD
Willows
D002338:Carotenoids / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism*; D000458:Cyanobacteria / Q000145:classification / Q000235:genetics / Q000378:metabolism* / Q000648:ultrastructure; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D008027:Light; D046529:Microscopy, Electron, Transmission; D010802:Phylogeny; D013050:Spectrometry, Fluorescence
D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D002734:Chlorophyll; D002338:Carotenoids