A phylogenetically novel cyanobacterium most closely related to <i>Gloeobacter</i>

Grettenberger, Christen L.; Sumner, D. Y.; Wall, Kate; Brown, C. Titus; Eisen, Jonathan A.; Mackey, Tyler J.; Hawes, Ian; Jospin, Guillaume; Jungblut, Anne D.

doi:10.1038/s41396-020-0668-5

Cited by 53 publications

(62 citation statements)

References 105 publications

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“…2B). It should be noted that our topology is different from the 16S tree of Grettenberger et al 12 , which resolved Candidatus Aurora sister to Gloeobacter + Phycobacteria, but is consistent with their 37-gene phylogeny. Given the high branch support from both of our datasets, we believe our result, (((Anthocerobacter,Candidatus Aurora),Gloeobacter), Phycobacteria), represents the most plausible relationship.…”

Section: Anthocerobacter Represents a Novel And Deeply Branched Cyanosupporting

confidence: 48%

“…We first compiled a 16S data matrix that includes major Cyanobacteria lineages, outgroups 6 , and available environmental sequences with high sequence similarities to Gloeobacter and Anthocerobacter 11,12 . Alignment was done by PASTA v3 67 , and maximum-likelihood phylogeny was inferred using IQTREE v1.6.11 with 1,000 ultrafast bootstrap replicates 68 .…”

Section: Phylogenetic Analyses and Divergence Time Estimatesmentioning

confidence: 99%

“…However, the depauperate nature of Gloeobacteria makes it difficult to ascertain whether the idiosyncrasies of Gloeobacter can properly reflect the ancestral states or are instead a product of lineage-specific reductive evolution. The recent discovery of Candidatus Aurora MAG is an important step toward capturing the broader genomic diversity of Gloeobacteria 12 , although the fragmented nature of MAG, as well as its absence as a culturable organism, prohibit further in-depth investigations.…”

Section: Introductionmentioning

confidence: 99%

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Revisiting the early evolution of Cyanobacteria with a new thylakoid-less and deeply diverged isolate from a hornwort

Rahmatpour

Hauser

Nelson

et al. 2021

Preprint

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Cyanobacteria have played pivotal roles in Earth's geological history especially during the rise of atmospheric oxygen. However, our ability to infer the early transitions in Cyanobacteria evolution has been limited by their extremely lopsided tree of life-the vast majority of extant diversity belongs to Phycobacteria (or "crown Cyanobacteria"), while its sister lineage, Gloeobacteria, is depauperate and contains only two closely related species of Gloeobacter and a metagenome-assembled genome. Here we describe a new culturable member of Gloeobacteria, Anthocerobacter panamensis, isolated from a tropical hornwort. Anthocerobacter diverged from Gloeobacter over 1.4 billion years ago and has low 16S identities with environmental samples. Our ultrastructural, physiological, and genomic analyses revealed that this species possesses a unique combination of traits that are exclusively shared with either Gloeobacteria or Phycobacteria. For example, similar to Gloeobacter, it lacks thylakoids and circadian clock genes, but the carotenoid biosynthesis pathway is typical of Phycobacteria. Furthermore, Anthocerobacter has one of the most reduced gene sets for photosystems and phycobilisomes among Cyanobacteria. Despite this, Anthocerobacter is capable of oxygenic photosynthesis under a wide range of light intensities, albeit with much less efficiency. Given its key phylogenetic position, distinct trait combination, and availability as a culture, Anthocerobacter opens a new window to further illuminate the dawn of oxygenic photosynthesis.

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Section: Anthocerobacter Represents a Novel And Deeply Branched Cyanosupporting

confidence: 48%

Section: Phylogenetic Analyses and Divergence Time Estimatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Revisiting the early evolution of Cyanobacteria with a new thylakoid-less and deeply diverged isolate from a hornwort

Rahmatpour

Hauser

Nelson

et al. 2021

Preprint

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“…BC1307, accession number NRTA00000000.1, Aurora vandensis , accession number JAAXLU010000000, Synechococcus sp. CS-601, accession number CP018091, and Phormidesmis priestleyi ULC007, accession number MPPI01000000) [ 73 , 74 , 75 , 76 ]. The ANI was also calculated between the MAG and an Arctic cyanobacterium closely related to an Antarctic strain ( Phormidesmis priestleyi BC1401, accession number LXYR01000000) [ 77 ], and the closest related genome according to 16S rRNA gene sequence ( Oscillatoria acuminata PCC 6304, accession number CP003607.1) [ 78 ].…”

Section: Methodsmentioning

confidence: 99%

Metabolic Capacity of the Antarctic Cyanobacterium Phormidium pseudopriestleyi That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide

Lumian

Jungblut

Dillion

et al. 2021

Genes

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Sulfide inhibits oxygenic photosynthesis by blocking electron transfer between H2O and the oxygen-evolving complex in the D1 protein of Photosystem II. The ability of cyanobacteria to counter this effect has implications for understanding the productivity of benthic microbial mats in sulfidic environments throughout Earth history. In Lake Fryxell, Antarctica, the benthic, filamentous cyanobacterium Phormidium pseudopriestleyi creates a 1–2 mm thick layer of 50 µmol L−1 O2 in otherwise sulfidic water, demonstrating that it sustains oxygenic photosynthesis in the presence of sulfide. A metagenome-assembled genome of P. pseudopriestleyi indicates a genetic capacity for oxygenic photosynthesis, including multiple copies of psbA (encoding the D1 protein of Photosystem II), and anoxygenic photosynthesis with a copy of sqr (encoding the sulfide quinone reductase protein that oxidizes sulfide). The genomic content of P. pseudopriestleyi is consistent with sulfide tolerance mechanisms including increasing psbA expression or directly oxidizing sulfide with sulfide quinone reductase. However, the ability of the organism to reduce Photosystem I via sulfide quinone reductase while Photosystem II is sulfide-inhibited, thereby performing anoxygenic photosynthesis in the presence of sulfide, has yet to be demonstrated.

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“…Currently, about 2000 complete or draft sequences of cyanobacterial genomes are accessible in public data bases such as the DOE joint genome institute (https://genome.jgi.doe.gov/portal/, accessed on 15 March 2021) and the Microbial Genome Database for Comparative Analysis (http: //mbgd.genome.ad.jp/, accessed on 15 March 2021). This number is steadily increasing in the frame of metagenomic analyses [49][50][51][52].…”

Section: Cyanobacteria Possess Widely Diverse Genomes That Contain a mentioning

confidence: 99%

Genetic, Genomics, and Responses to Stresses in Cyanobacteria: Biotechnological Implications

Cassier‐Chauvat

Blanc-Garin

Chauvat

2021

Genes

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Cyanobacteria are widely-diverse, environmentally crucial photosynthetic prokaryotes of great interests for basic and applied science. Work to date has focused mostly on the three non-nitrogen fixing unicellular species Synechocystis PCC 6803, Synechococcus PCC 7942, and Synechococcus PCC 7002, which have been selected for their genetic and physiological interests summarized in this review. Extensive “omics” data sets have been generated, and genome-scale models (GSM) have been developed for the rational engineering of these cyanobacteria for biotechnological purposes. We presently discuss what should be done to improve our understanding of the genotype-phenotype relationships of these models and generate robust and predictive models of their metabolism. Furthermore, we also emphasize that because Synechocystis PCC 6803, Synechococcus PCC 7942, and Synechococcus PCC 7002 represent only a limited part of the wide biodiversity of cyanobacteria, other species distantly related to these three models, should be studied. Finally, we highlight the need to strengthen the communication between academic researchers, who know well cyanobacteria and can engineer them for biotechnological purposes, but have a limited access to large photobioreactors, and industrial partners who attempt to use natural or engineered cyanobacteria to produce interesting chemicals at reasonable costs, but may lack knowledge on cyanobacterial physiology and metabolism.

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A phylogenetically novel cyanobacterium most closely related to Gloeobacter

Cited by 53 publications

References 105 publications

Revisiting the early evolution of Cyanobacteria with a new thylakoid-less and deeply diverged isolate from a hornwort

Revisiting the early evolution of Cyanobacteria with a new thylakoid-less and deeply diverged isolate from a hornwort

Metabolic Capacity of the Antarctic Cyanobacterium Phormidium pseudopriestleyi That Sustains Oxygenic Photosynthesis in the Presence of Hydrogen Sulfide

Genetic, Genomics, and Responses to Stresses in Cyanobacteria: Biotechnological Implications

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