The new non-destructive DNA model opens up opportunities

The new non-destructive DNA model opens up opportunities

Doctor Nic Rawlence. Found: University of Otago

Researchers at the University of Otago have developed a new way to obtain ancient genomic data without vandalism, creating new opportunities for museums and archaeological collections around the world. .

“Old DNA doesn’t have to be destroyed,” says lead author Lachie Scarsbrook. “Our new way is to allow the grandchild to be rebuilt without destroying the bone that has been kept secret for thousands of years.”

The research, published in a world newspaper Molecular Ecologysuggests a new way to obtain genomic data from small vertebrate remnants with undetectable damage to the mandible.

“This not only makes it easier to evaluate the contents of the smallest museum collections that can be compared, but also the most valuable and valuable material, both culturally and scientifically. , “said Mr Scarsbrook.

The study, which took place when Mr Scarsbrook was completing a Master of Science in the Department of Zoology, used the current population of all time. Hoplodactylus geckos as a case study, showing the first mitochondrial genomes found for a New Zealand species.

The new DNA data allowed the researchers to understand and show how tectonic activity, climate change and human impact influenced Duvaucel’s gecko (Hoplodactylus duvauceli) the population of New Zealand.

“The deep divide between the North and South Islanders shows a long separation before the founding of the Cook Strait, while the South Island’s population shows genetic defects. which corresponded to the high ice cover at the height of the last Ice Age, ”explains Mr Scarsbrook.

“The significant loss of diversity in the North and South Islands is an indication of the impact of human and infiltrated thieves. Our research into caregiving has a serious and accurate impact. Of the Duvaucel series. ”

The director and author of the study, Drs. Nic Rawlence of the Otago Paleogenetics Laboratory said one of the findings of the study was that New Zealand geckos were aware that when humans arrived at the present day, they were clean.

“It was previously thought that you could distinguish between the bones of different species based on size, but amazing CT scans and ancient DNA showed that we were able to distinguish between the bones. different gecko in the same species – many are thrown away with bath water., “Drs. Rawlence’s place.

“It doesn’t matter how big it is after all, so what we know about New Zealand geckos when they came to man is now a clear paleontological class. ”

Mr Scarsbrook is completing his DPhil at the Palaeogenomics and Bio-Archeology Research Network at Oxford University, Mr Scarsbrook said the research also communicates the process with scientific progress.

“We first tried to extract the mitochondrial genomes using a different method, and after months of time in the laboratory, we didn’t produce the use data.”

“After going back to the art gallery and making some changes we have achieved our goal, that is the only way to show patience in the face of adversity is key if you help scientific progress. ”

Dr. According to Rawlence, the ongoing research project will use these new technologies to reconstruct the extinct ecological history of the lizard and the skin of New Zealand (which has embarrassed many scientists). ), and frogs and tuatara, in collaboration with the Department of Conservation and Native Tribes.

“The long -term storage of specimens is a major concern for curators around the world, so what Lachie has developed not only uncover molecular secrets but also important parts of natural history. and archaeological collections around the world as well as genetic information. ”


The release of green geckos can help keep endangered species.


More information:
Lachie Scarsbrook et al, Ancient mitochondrial genomes were recovered from small vertebrate bones by extracting small -scale DNA removal: Phylogeography of the New Zealand gecko Hoplodactylus, Molecular Ecology (2022). DOI: 10.1111 / mec.16434

Presented by the University of Otago

Directions: New non-destructive DNA method unveiled at times (2022, April 5) downloaded on 5 April 2022 from https://phys.org/news/2022-04-non-destructive-dna-method -opportunities.html

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