ArticleOrigins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life2012
Plasmid stability in dried cells of the desert cyanobacterium Chroococcidiopsis and its potential for GFP imaging of survivors on Earth and in space.
Article in Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 16 citations in OpenAlex.
- Harnessing desiccation-tolerant cyanobacteria as biosensors for LexA-mediated responses in deep space.Frontiers in microbiology · 2026Article
- Far-red light photoacclimation in a desertFrontiers in microbiology · 2024Article
- First characterization of cultivable extremophileFrontiers in microbiology · 2023Article
- SEVA-Cpf1, a CRISPR-Cas12a vector for genome editing in cyanobacteria.Microbial cell factories · 2022Article
- Absence of increased genomic variants in the cyanobacterium Chroococcidiopsis exposed to Mars-like conditions outside the space station.Scientific reports · 2022Article
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Abstract
Two GFP-based plasmids, namely pTTQ18-GFP-pDU1(mini) and pDUCA7-GFP, of about 7 kbp and 15 kbp respectively, able to replicate in Chroococcidiopsis sp. CCMEE 029 and CCMEE 123, were developed. Both plasmids were maintained in Chroococcidiopsis cells after 18 months of dry storage as demonstrated by colony PCR, plasmid restriction analysis, GFP imaging and colony-forming ability under selection of dried transformants; thus suggesting that strategies employed by this cyanobacterium to stabilize dried chromosomal DNA, must have protected plasmid DNA. The suitability of pDU1(mini)-plasmid for GFP tagging in Chroococcidiopsis was investigated by using the RecA homolog of Synechocystis sp. PCC 6803. After 2 months of dry storage, the presence of dried cells with a GFP-RecA(Syn) distribution resembling that of hydrated cells, supported its capability of preventing desiccation-induced genome damage, whereas the rewetted cells with filamentous GFP-RecA(Syn) structures revealed sub-lethal DNA damage. The long-term stability of plasmid DNA in dried Chroococcidiopsis has implication for space research, for example when investigating the recovery of dried cells after Martian and space simulations or when developing life support systems based on phototrophs with genetically enhanced stress tolerance and stored in the dry state for prolonged periods.
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