Vertical DNA transfer from endosymbiotic relationship observed in vertebrate species

[popeyespappy]

The first observed instance of vertical DNA transfer from an endosymbiotic relationship in a vertebrate species was recently recorded by a team from Dalhousie University in Halifax, Canada. The team announced their findings in the paper . It was published last month in Proceedings of the National Academy of Sciences.

Scientists have long known about the relationship between these two species, but it wasn’t understood very well. The algae are found within the egg of the salamander where it provides oxygen for the embryo and gets nitrogen rich waste in return. Scientists didn’t understand why the algae weren’t destroyed by the salamander’s immune system. The answer to that problem appears to be that the relationship begins in the embryo prior to the development of the immune system. Even more surprising was the finding that the salamander appears to pass the algae from one generation to the next.

Linky

[Minimalist]

Isn't science magnificent, Pap? As opposed to that stupid bible shit.

[Anomalocaris]

Isn't mitochondria in vertebrate cells endosymbiant with vertical gene transfer?

[popeyespappy]

Isn't science magnificent, Pap? As opposed to that stupid bible shit.

Yep!

Didn't mitochondria start out as endosymbiant with vertical gene transfer?

That’s what endosymbiotic theory says. However that happened between bacteria, and while endosymbiotic relationships are fairly common between bacteria and even between bacteria and non-vertebrates, this is thought to be a first at the cellular level in a vertebrate species.

[Anomalocaris]

That’s what endosymbiotic theory says. However that happened between bacteria, and while endosymbiotic relationships are fairly common between bacteria and even between bacteria and non-vertebrates, this is thought to be a first at the cellular level in a vertebrate species.

Mitochondria has its own DNA and exist in most cells in each vertebrate, The process of mitochondria DNA transfer from one generation of vertebrate to the next occurs outside normal sexual reproduction of the vertebrate, So Mitochrondria appear to fit the definition of vertical gene transfer of endosymbiant in a vertebrate.

In fact it is the vertical DNA transfer of mitochondria that makes possible the genetic dating techniques that showed us our most recent common female ancestor about 100,000 years before the christian god got around to creating her.

[popeyespappy]

Mitochondria has its own DNA and exist in most cells in each vertebrate, The process of mitochondria DNA transfer from one generation of vertebrate to the next occurs outside normal sexual reproduction of the vertebrate, So Mitochrondria appear to fit the definition of vertical gene transfer of endosymbiant in a vertebrate.

In fact it is the vertical DNA transfer of mitochondria that makes possible the genetic dating techniques that showed us our most recent common female ancestor about 100,000 years before the christian god got around to creating her.

Yes, that is correct. The difference is that mitochondria are no longer considered to be endosymbiotic organisms but an integral part of the host cell. Mitochondria, probably a close relative of rickettsiales, became integrated at the cellular level around 2 billion years ago while the host cell was still a single cell organism. At least that is what endosymbiotic theory says. While this type of relationship is common in bacteria and somewhat less so in invertebrates, the integration of a new symbiotic organism with a vertebrate has never been observed until now. The immune system of vertebrates usually keeps this type of relationship from developing. Our mitochondria have been in place since the time of the common ancestor of all eukaryotic cells. At that time an immune system had not yet evolved to impede the integration.

[Cinjin]

Yes yes, but were they able to figure out when Adam and Eve gave the salamander it's name??