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Tags genetics , microbes

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Old 20th November 2018, 08:54 AM   #1
attempt5001
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Genetics of Hemimastigotes Desribed

https://www.cbc.ca/news/technology/h...NBq_4sScmgtlvQ

A bit of a "post 'n dash" (apologies), but I'd be interested to hear what the community here thinks of this. In short, a microbiology graduate student scoops up some dirt on a whim during a hike and has a look under a microscope back at the lab. She discovers some phenotypically unique looking organisms and has a colleague perform single organism genetic sequencing.
Turns out the organisms (at least two different varieties as far as the article reports) are so genetically different from other genetically classified organisms that they seem to represent a new kingdom. Very interesting in my opinion, but the fact that they were "scooped up at random" suggests to me that these organisms (and perhaps other new kindgoms of organisms) may not be as rare as previously thought. Appreciate thoughts of those educated in this field and will check back as soon as I can.
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Old 20th November 2018, 09:04 AM   #2
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Pretty interesting. Breakfast looked good, too.
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Old 20th November 2018, 09:13 AM   #3
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Originally Posted by Trebuchet View Post
Pretty interesting. Breakfast looked good, too.
Laugh. For sure. Good way to start a hike in the woods!
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Old 20th November 2018, 09:22 AM   #4
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My kind of breakfast, except for the WD 40..
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Old 20th November 2018, 11:13 AM   #5
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Originally Posted by Skeptical Greg View Post
My kind of breakfast, except for the WD 40..
Agreed! Bit of a high price to pay to keep your scrambled eggs from sticking.
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Old 20th November 2018, 11:15 AM   #6
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Just noticed I mistyped "Described" in the thread title here :/
(insert face-palm smiley)
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Old 20th November 2018, 02:12 PM   #7
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Hemimastigotes? Does that mean they only chew on one side of their mouths?
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Old 20th November 2018, 06:54 PM   #8
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Hemi - half (Latin)
Mast - breast (Greek)
Ig - not (prefix, variant of in-, Latin)
Ote - the type thus characterized (Greek suffix)

Hemimastigotes, therefore, are not members of a class characterized by having half a breast. Which is obviously true.

(A more likely derivation would relate to the Greek "mastigos," a whip or scourge.)
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Old 20th November 2018, 07:33 PM   #9
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Originally Posted by Myriad View Post
Hemi - half (Latin)
Mast - breast (Greek)
Ig - not (prefix, variant of in-, Latin)
Ote - the type thus characterized (Greek suffix)

Hemimastigotes, therefore, are not members of a class characterized by having half a breast. Which is obviously true.

(A more likely derivation would relate to the Greek "mastigos," a whip or scourge.)
Hemi=half (we agree)

-masti- as in 'masticate, to chew'
-gote-(we agree, 'the one who is thus characterized )

So either "chews on one side of his mouth) OR

"To eat half of a goat".

(I've been doing Lithuanian Genealogy today. Looks like I found a GGpa whose occupation " uzsiemimas juodadarbis" was a google literate translate "black coffin". It means "dead end job", unskilled bust-ass labor. )
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Old 20th November 2018, 08:12 PM   #10
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Originally Posted by Skeptical Greg View Post
My kind of breakfast, except for the WD 40..
Originally Posted by attempt5001 View Post
Agreed! Bit of a high price to pay to keep your scrambled eggs from sticking.
I'm just trying to figure out what the other strange bottle is. But there's bacon. BACON! I'll just have that, you can keep the eggs.
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Old 21st November 2018, 12:58 AM   #11
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Relax everyone.

It's a new Protist.
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Old 21st November 2018, 08:30 AM   #12
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Originally Posted by Trebuchet View Post
I'm just trying to figure out what the other strange bottle is. But there's bacon. BACON! I'll just have that, you can keep the eggs.

I'm also wondering what the other two people are going to eat. That's only one serving of bacon.
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Old 21st November 2018, 07:57 PM   #13
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Originally Posted by Skeptical Greg View Post
I'm also wondering what the other two people are going to eat. That's only one serving of bacon.
Eggs and WD40.
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Old 21st November 2018, 08:11 PM   #14
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Interesting, but I'd be pretty surprised if it really did represent a new Kingdom.
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Old 22nd November 2018, 08:14 AM   #15
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An informative article:
https://gizmodo.com/bizarre-microbes...-ev-1830496441

Points out that the study is valuable and interesting, but that assignment to new super-kingdom, etc. depends on the criteria being used by the assigner. "Results may vary."

Organism is very interesting no matter the details of the taxonomy.

Interesting origin of species name too:
"The previously known species is called Spironema and the new one was dubbed Hemimastix kukwesjijk (pronounced “ku–ga–wes–jij–k”), which means “rapacious hairy ogre” in the language of the Mi’kmaq First Nations people of Nova Scotia."
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Old 22nd November 2018, 08:19 AM   #16
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Thanks for bringing this news.
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Old 22nd November 2018, 07:09 PM   #17
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Originally Posted by Trebuchet View Post
I'm just trying to figure out what the other strange bottle is. But there's bacon. BACON! I'll just have that, you can keep the eggs.
Laugh. I assumed that was the soap bottle for washing up. Good reminder to all scientists to keep a head shot on file in case you make the news unexpectedly. I can picture the discussion:

Grad student 1: Hey need a picture of our lab group for a press release ...

Grad student 2: Well, we have the one where we cooked bacon and eggs with WD40 or the one where we dressed up like Twisted Sister so we could film our entry for "dance your thesis" ...
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Old 22nd November 2018, 07:12 PM   #18
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Originally Posted by Giordano View Post
An informative article:
https://gizmodo.com/bizarre-microbes...-ev-1830496441

Points out that the study is valuable and interesting, but that assignment to new super-kingdom, etc. depends on the criteria being used by the assigner. "Results may vary."

Organism is very interesting no matter the details of the taxonomy.

Interesting origin of species name too:
"The previously known species is called Spironema and the new one was dubbed Hemimastix kukwesjijk (pronounced “ku–ga–wes–jij–k”), which means “rapacious hairy ogre” in the language of the Mi’kmaq First Nations people of Nova Scotia."
Thanks Giordano. That's a really helpful article for further context.
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Old 23rd November 2018, 01:10 PM   #19
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Just to point out fungi and animals are quite closely related (as these things go). Fungi are more closely related to animals than either are to plants. All are eukaryotes and more closely related to each other than to prokaryotes, then there are the archaebacteria. So they are just sitting in the eukaryotes perhaps not plants, but on the fungi, animal grouping. Personally I am a slime mould fan, I did slime moulds for my A level biology project. Amoeba that come together, differentiate and form fruiting bodies, or hunt as a multicellular grex. How cool is that!
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Old 24th November 2018, 06:14 PM   #20
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Hemimastigota -- from Greek hemi- "half" and mastix "whip" -- "half a whip". Referring to the organism's flagellum (Latin for "whip"). It's one of several difficult-to-place organisms that branched off very early in the history of eukaryotedom, about when the major groups of them branched off from each other. Another one that made news some months back was Collodictyon.

Here is the phylogeny so far:
  • Amorphea
    • Opisthokonta
      • Choanoflagellida + Metazoa
      • Fungi
    • Amoebozoa
  • Diaphoretickes
    • Archaeplastida
    • SAR
      • SA
        • Stramenopiles
        • Alveolata
      • Rhizaria
  • Excavata
According to Hemimastigophora is a novel supra-kingdom-level lineage of eukaryotes | Nature, those protists are closest to Diaphoretickes as a whole.

Collodictyon itself, along with Mantamonas and Rigifilida form "CRuMs", most closely related to Amorphea as a whole.
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