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The red algaGaldieria sulphurariahas a predilection for extremes . The single - celled organism can be found in hot sulfur spring in Iceland or Yellowstone National Park , prepare up food through photosynthesis . But it can just as well expand in the vitriolic drain of a dark old mine shaft among toxic alloy like arsenic and mercury , feed on bacteria .
scientist have discovered howGaldieriacame to be so versatile : It filch the genes it needs to come through insuch hostile placesfrom simpler organism , like bacterium and archaea , that were already adapted to extremum .
This is a rock in an Icelandic hot spring near Reykjavik with sulfur and Galdieria sulphuraria.
" Why reinvent the wheel if you may copy it from your neighbour ? " involve study researcher Martin Lercher , of Heinrich - Heine University in Dusseldorf , Germany . Lercher and colleagues sequenced the genome ofGaldieriaand found that at least 5 percent of its protein - coding factor look like they were taken from less complex species .
For example , Galdieriaseems to educe its allowance for gamey temperature from a single cistron that it stole fromheat - loving archaeaand then replicate hundreds of time , the researchers say . ( Archaea that expand in the hot topographic point tend to have the most copy of this gene.)Galdieriaalso can endure eminent salt concentrations and make economic consumption of a wide variety of food seed likely because it robbed other gene from extremophile bacterium , the report shows .
The researchers sayGaldieriais the first knowneukaryote(organism with a karyon ) that has adapted to its extreme lifestyle through a process known ashorizontal gene transfer , in which genes are interchange without sex between being that are n’t related to each other .
" It ’s usually take for granted that organisms with a nucleus can not re-create genes from unlike coinage — that ’s why eukaryotes depend on sex to recombine their genomes . How hasGaldieriamanaged to overwhelm this restriction ? It ’s an exciting head , " Lercher articulate in a statement .
Another Heinrich - Heine University researcher , Andreas Weber , said in a assertion that Galdieria ’s feat is " a dreaming come truthful for biotech . "
" Galdieriahas acquired gene with interesting properties from unlike organisms , integrated them into a functional internet and developed unique properties and adaptations , " Weber added . Advances in genetic engineering might make it potential to endow other algae with protein standardized to the ones that giveGaldieriaits high stress margin — an enticing prospect for crude - producing algae that could be exploited for biofuels , the researchers say .
The study , which was fund by the National Science Foundation , was detail this calendar week in the daybook Science .
