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Rooted tree key to understanding bacterial evolution, new study suggests


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IMAGE: Gene transfers (movement of genes between bacterial lineages) have hampered traditional efforts to study bacterial evolution in deep time. Coleman et al. used a new method that combines the vertical.
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Credit: Gergely J. Szöll?si
The findings, published in the journal
Science today, demonstrate how integrating vertical descent and horizontal gene transfer can be used to infer the root of the bacterial tree and the nature of the last bacterial common ancestor.
Bacteria comprise a very diverse domain of single-celled organisms that can be found almost everywhere on Earth. All Bacteria are related and derive from a common ancestral Bacterial cell. Until now, the shape of the bacterial tree of life and the placement of its root has been contested, but is necessary to shed light on the early evolution of life on our planet. ....

Gergely Sz , Anja Spang , Phil Hugenholtz , Royal Netherlands Institute For Sea Research , University Of Queensland , All Bacteria , Candidate Phyla Radiation , Royal Netherlands Institute , Sea Research , அஞ்ச ஸ்பாங் , அரச நெதர்லாந்து நிறுவனம் க்கு கடல் ஆராய்ச்சி , பல்கலைக்கழகம் ஆஃப் குயின்ஸ்லாந்து , அரச நெதர்லாந்து நிறுவனம் , கடல் ஆராய்ச்சி ,

Hot springs microbes 'recycle' dead plants and don't release methane


Researchers have identified an entirely new group of microbes quietly living in hot springs, geothermal systems, and hydrothermal sediments around the world
They appear to play an important role in the global carbon cycle by helping to break down decaying plants without producing the greenhouse gas methane, the researchers report.
“Climate scientists should take these new microbes into account in their models to more accurately understand how they will impact climate change,” says Brett Baker, assistant professor at the University of Texas at Austin’s Marine Science Institute and lead author of the paper in
The new group, which biologists call a phylum, is named ....

United States , South Africa , Yellowstone National Park , Brett Baker , Thomas Brock , University Of California , Nature Communications , China University Of Geosciences , National Natural Science Foundation Of China , Dartmouth College , Royal Netherlands Institute For Sea Research , National Science Foundation , Utrecht University , Engineering Guangdong Laboratory China , Sun Yat Sen University , Us Department Of Energy Joint Genome Institute , China Ministry Of Science , Marine Science Institute , Yellowstone National , Valerie De Anda , Southern Marine Science , Engineering Guangdong Laboratory , China University , Royal Netherlands Institute , National Natural Science Foundation , Energy Joint Genome Institute ,

Climate-friendly microbes chomp dead plants without releasing heat-trapping methane


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IMAGE: Tengchong Yunnan hot springs in China, where some of the newly described Brockarchaeota were collected.
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Credit: Jian-Yu Jiao/Sun Yat-Sen University
The tree of life just got a little bigger: A team of scientists from the U.S. and China has identified an entirely new group of microbes quietly living in hot springs, geothermal systems and hydrothermal sediments around the world. The microbes appear to be playing an important role in the global carbon cycle by helping break down decaying plants without producing the greenhouse gas methane.
Climate scientists should take these new microbes into account in their models to more accurately understand how they will impact climate change, said Brett Baker, assistant professor at The University of Texas at Austin s Marine Science Institute who led the research published April 23 in ....

United States , South Africa , Yellowstone National Park , Brett Baker , Wen Jun Li , Thomas Brock , Jillianf Banfield , Hong Chen Jiang , Nina Dombrowski , University Of California , Nature Communications , China University Of Geosciences , National Natural Science Foundation Of China , Dartmouth College , Royal Netherlands Institute For Sea Research , Sun Yat Sen University China , Utrecht University , Engineering Guangdong Laboratory China , Sun Yat Sen University , China Ministry Of Science , Us National Science Foundation , Marine Science Institute , Yellowstone National , Valerie De Anda , Southern Marine Science , Engineering Guangdong Laboratory ,