2020
DOI: 10.1101/2020.01.09.901074
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Chroococcidiorella tianjinensis, gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a green alga arises from the cyanobacterium TDX16

Abstract: 6We provide a taxonomic description of the first origin-known alga TDX16-DE that arises from 7 the Chroococcidiopsis-like endosymbiotic cyanobacterium TDX16 by de novo organelle 8 biogenesis after acquiring its green algal host Haematococcus pluvialis's DNA. TDX16-DE is 9 spherical or oval, with a diameter of 2.9-3.6 µm, containing typical chlorophyte pigments of 10 chlorophyll a, chlorophyll b and lutein and reproducing by autosporulation, whose 18S rRNA 11 gene sequence shows the highest similarity of 99.8% … Show more

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“…The formation of organelles in cyanobacterium TDX16 is the first case of organelle biogenesis in prokaryotes observed so far, which contradicts the assumption of only once organelle biogenesis in prokaryotes in ancient times and occurs in a complex manner completely different from the simple hypothetical ways (discussion is in the following section), and thus may be surprising, not easily un- Figure 18) is a new green alga [59], distinct from all the algae documented so far, including A. protothecoides and C. vulgaris though their 16S rRNAs (GenBank AY553213.1 and GenBank AB001684.1) show the highest similarity to that of TDX16-DE (Gen-Bank KJ612008.1). Therefore, organelle biogenesis in TDX16 is an undoubted fact but not an artifact.…”
Section: The Reason For Organelle Biogenesis In Tdx16mentioning
confidence: 91%
“…The formation of organelles in cyanobacterium TDX16 is the first case of organelle biogenesis in prokaryotes observed so far, which contradicts the assumption of only once organelle biogenesis in prokaryotes in ancient times and occurs in a complex manner completely different from the simple hypothetical ways (discussion is in the following section), and thus may be surprising, not easily un- Figure 18) is a new green alga [59], distinct from all the algae documented so far, including A. protothecoides and C. vulgaris though their 16S rRNAs (GenBank AY553213.1 and GenBank AB001684.1) show the highest similarity to that of TDX16-DE (Gen-Bank KJ612008.1). Therefore, organelle biogenesis in TDX16 is an undoubted fact but not an artifact.…”
Section: The Reason For Organelle Biogenesis In Tdx16mentioning
confidence: 91%