World New Primordial Protozoan Species Is Not in Any Known Kingdom of Life

Furby

Current occupation: News poster


A tiny microorganism found in Norwegian lake sludge may be related to the very oldest life forms on this planet, a possible modern cousin of our earliest common ancestor. It is not a fungus, alga, parasite, plant or animal, yet it has features associated with other kingdoms of life. It could be a founding member of the newest kingdom on the tree of life, scientists said.

Life on Earth is divided into two main groups, the prokaryotes and the eukaryotes. Prokaryotes are simple life forms, with no membranes or cell nuclei; this group includes bacteria and archaea. Eukaryotes, which include humans, animals, plants, fungi and algae, have cell membranes and nuclei. This new organism is a eukaryote.

The organism is weird in several key ways. It has four flagella, for instance, which makes it different from bacteria and eukaryotes. Mammals, fungi and amoebae only have one flagellum — that’s the propeller-like feature that helps cells move (think of the “tail” of a sperm cell). Algae, plants and single-celled parasites called excavates are thought to have had two flagella. Collodictyon is somewhere between an excavate and an amoeba.

Read more at PopSci.com.
 

Varine

And as the moon rises, we shall prepare for war
We still don't know how the fuck it came to be alive flamerkitts.
 

The Helper

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Strange organism has unique roots in the tree of life - possibly a new Kingdom

Talk about extended family: A single-celled organism in Norway has been called "mankind's furthest relative." It is so far removed from the organisms we know that researchers claim it belongs to a new base group, called a kingdom, on the tree of life.

"We have found an unknown branch of the tree of life that lives in this lake. It is unique! So far we know of no other group of organisms that descend from closer to the roots of the tree of life than this species," study researcher Kamran Shalchian-Tabrizi, of the University of Oslo, in Norway, said in a statement.

The organism, a type of protozoan, was found by researchers in a lake near Oslo. Protozoans have been known to science since 1865, but because they are difficult to culture in the lab, researchers haven't been able to get a grip on their genetic makeup. They were placed in the protist kingdom on the tree of life mostly based on observations of their size and shape.

In this study, published March 21 in the journal Molecular Biology Evolution, the researchers were able to grow enough of the protozoans, called Collodictyon, in the lab to analyze its genome. They found it doesn't genetically fit into any of the previously discovered kingdoms of life. It's an organism with membrane-bound internal structures, called a eukaryote, but genetically it isn't an animal, plant, fungus, alga or protist (the five main groups of eukaryotes).

Read the whole article here.
 

seph ir oth

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Threads merged no worries :thup:
 
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