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Title: Analysis of an improved Cyanophora paradoxa genome assembly
Authors: Price, Dana C.
Goodenough, Ursula W.
Roth, Robyn
Lee, Jae-Hyeok
Kariyawasam, Thamali
Mutwil, Marek
Ferrari, Camilla
Facchinelli, Fabio
Ball, Steven G.
Cenci, Ugo
Chan, Cheong Xin
Wagner, Nicole E.
Yoon, Hwan Su
Weber, Andreas P. M.
Bhattacharya, Debashish
Keywords: Science::Biological sciences
Issue Date: 2019
Source: Price, D. C., Goodenough, U. W., Roth, R., Lee, J.-H., Kariyawasam, T., Mutwil, M., . . . Bhattacharya, D. (2019). Analysis of an improved Cyanophora paradoxa genome assembly. DNA Research, 26(4), 287-299. doi:10.1093/dnares/dsz009
Journal: DNA Research
Abstract: Glaucophyta are members of the Archaeplastida, the founding group of photosynthetic eukaryotes that also includes red algae (Rhodophyta), green algae, and plants (Viridiplantae). Here we present a high-quality assembly, built using long-read sequences, of the ca. 100 Mb nuclear genome of the model glaucophyte Cyanophora paradoxa. We also conducted a quick-freeze deep-etch electron microscopy (QFDEEM) analysis of C. paradoxa cells to investigate glaucophyte morphology in comparison to other organisms. Using the genome data, we generated a resolved 115-taxon eukaryotic tree of life that includes a well-supported, monophyletic Archaeplastida. Analysis of muroplast peptidoglycan (PG) ultrastructure using QFDEEM shows that PG is most dense at the cleavage-furrow. Analysis of the chlamydial contribution to glaucophytes and other Archaeplastida shows that these foreign sequences likely played a key role in anaerobic glycolysis in primordial algae to alleviate ATP starvation under night-time hypoxia. The robust genome assembly of C. paradoxa significantly advances knowledge about this model species and provides a reference for exploring the panoply of traits associated with the anciently diverged glaucophyte lineage.
ISSN: 1340-2838
DOI: 10.1093/dnares/dsz009
Schools: School of Biological Sciences 
Rights: © 2019 The Author(s). Published by Oxford University Press on behalf of Kazusa DNA Research Institute. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SBS Journal Articles

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