Synechococcus elongatus

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Synechococcus elongatus
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Synechococcales
Family: Synechococcaceae
Genus: Synechococcus
Species:
S. elongatus
Binomial name
Synechococcus elongatus
(Nägeli) Nägeli

Synechococcus elongatus is a

genetic modification
.

Occurrence

In the last decade, several strains of Synechococcus elongatus have been produced in laboratory environments, which ultimately led to the production of Synechococcus elongatus UTEX 2973. S. elongatus UTEX 2973 is a mutant hybrid from UTEX 625.[1]

In 1955,

University of Texas algae culture collection as Synechococcus leopoliensis UTEX 625[1][2] However, that strain had lost its rapid growth property and was also unable to grow at high temperatures, unlike the original strain. In 2015, Jingjie Yu and colleagues, were able to isolate the mutant strain from a mixed culture of Synechococcus UTEX 625. The mutant strain was deposited to the UTEX algae culture collection, and given a new number, UTEX 2979.[1]

Structure

Synechococcus elongatus is

thylakoid membrane layers forming evenly spaced concentric rings and its carboxysomes and polyphosphate bodies are located in the central cytoplasmic region (Image 1).[1]

Genetics

The genome sequence of Synechococcus UTEX 2973 was similar to the cyanobacterium Synechococcus PCC 7942. Even though it was isolated from S. elongatus 625, it is most closely related to S. elongatus PCC 7942 with 99.8% similarity. S. elongatus UTEX 2973 contains a SNP to the gene encoding ATP synthase F1 subunit α, comparable to the corresponding gene in Synechococcus PCC 7942. This specific SNP causes an amino acid substitution at the 252nd position of the protein.[1]

Metabolism

Synechococcus elongatus UTEX 2973 is

photoautotrophic and has one of the shortest doubling times reported for cyanobacteria at 1.5 hours in a BG11 medium at 42 °C under continuous 1,500 μmoles photons·m−2·s−1 white light with 5% CO2.[3] While it is typically maintained on BG11 media, it can also be cryopreserved using 1% (v/v) dimethyl sulfoxide (DMSO) as a cryoprotectant.[4]

Significance

wild-type alleles in Synechococcus 7942 with the rapid growth associated alleles from S. elongatus UTEX 2973. This resulted in Synechococcus 7942 reducing its doubling time from 6.8 to 2.3 hours.[5]

Also modified strains of S. elongatus have high prospects in production of 2,3-butanediol and other substances, which can be used in plastic and fuel production.[6]

S. elongatus

References

  1. ^
    PMID 25633131
    .
  2. JSTOR 2438564
    .
  3. PMID 29437923
    .
  4. S2CID 254604537
    .
  5. PMID 30409802
    .
  6. PMID 28873946
    . Retrieved 2023-03-21.
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