Photosymbionts in ascidians
Photosymbionts in ascidians
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The photosymbionts are cyanophytes (= cyanobacteria): Prochloron in many host species and Synecocystis in some other species.
The photosymbionts are cyanophytes (= cyanobacteria): Prochloron in many host species and Synecocystis in some other species.
Prochloron is a very unique cyanophyte, because it has chlorophyl a and b and lacks phycobilin.
Prochloron is a very unique cyanophyte, because it has chlorophyl a and b and lacks phycobilin.
Trididemnum clinides harbors three cyanophyte species in the tunic .
Trididemnum clinides harbors three cyanophyte species in the tunic .
Hirose E, Uchida H, Murakami A (2009) Ultrastructural and microspectrophotometric characterisation of multiple species of cyanobacterial photosymbionts coexisting in the colonial ascidian Trididemnum clinides (Tunicata, Ascidiacea, Didemnidae). Eur J Phycol 44:365–375. doi: 10.1080/09670260802710269
Interestingly, non-Prochloron cyanophytes are only found in the tunic.
Interestingly, non-Prochloron cyanophytes are only found in the tunic.
Prochloron
Prochloron
Yokobori S, Kurabayashi A, Neilan BA, et al (2006) Multiple origins of the ascidian-Prochloron symbiosis: Molecular phylogeny of photosymbiotic and non-symbiotic colonial ascidians inferred from 18S rDNA sequences. Mol Phylogenet Evol 40:8–19. doi: 10.1016/j.ympev.2005.11.025
Münchhoff J, Hirose E, Maruyama T, et al (2007) Host specificity and phylogeography of the prochlorophyte Prochloron sp., an obligate symbiont in didemnid ascidians. Environ Microbiol 9:890–899. doi: 10.1111/j.1462-2920.2006.01209.x
Hirose E, Neilan BA, Schmidt EW, Murakami A (2009) Enigmatic life and evolution of Prochloron and related cyanobacteria inhabiting colonial ascidians. In: Gault PM, Marler HJ (eds) Handbook on Cyanobacteria. Nova Science Publishers, Inc., New York, pp 161–189
Dr. Ralph A. Lewin
Dr. Ralph A. Lewin
He originally described Prochloron didemni.
He originally described Prochloron didemni.
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