Frontiers in Microbiology,
Journal Year:
2021,
Volume and Issue:
12
Published: Aug. 2, 2021
Metagenomics
and
metatranscriptomics
are
powerful
methods
to
uncover
key
micro-organisms
processes
driving
biogeochemical
cycling
in
natural
ecosystems.
Databases
dedicated
depicting
pathways
(for
example,
metabolism
of
dimethylsulfoniopropionate
(DMSP),
which
is
an
abundant
organosulfur
compound)
from
metagenomic/metatranscriptomic
data
rarely
seen.
Additionally,
a
recognized
normalization
model
estimate
the
relative
abundance
environmental
importance
metagenomic
metatranscriptomic
has
not
been
organized
date.
These
limitations
impact
ability
accurately
relate
microbial-driven
differences
conditions.
Thus,
easy-to-use,
specialized
tool
that
infers
visually
compares
potential
for
processes,
including
DMSP
cycling,
urgently
required.
To
solve
these
issues,
we
developed
DiTing,
wrapper
infer
compare
among
set
given
or
reads
one
step,
based
on
Kyoto
Encyclopedia
Genes
Genomes
(KEGG)
manually
created
gene
database.
Accurate
specific
formulae
over
100
were
calculate
their
abundance.
Output
reports
detail
both
text
graphical
format.
DiTing
was
applied
simulated
resulted
consistent
genetic
features
benchmark
genomic
data.
Subsequently,
when
hydrothermal
vents
Tara
Ocean
project,
functional
profiles
predicted
by
correlated
with
condition
changes.
can
now
be
confidently
wider
datasets,
it
available
at
https://github.com/xuechunxu/DiTing
.
Nature Biotechnology,
Journal Year:
2020,
Volume and Issue:
39(4), P. 499 - 509
Published: Nov. 9, 2020
Abstract
The
reconstruction
of
bacterial
and
archaeal
genomes
from
shotgun
metagenomes
has
enabled
insights
into
the
ecology
evolution
environmental
host-associated
microbiomes.
Here
we
applied
this
approach
to
>10,000
collected
diverse
habitats
covering
all
Earth’s
continents
oceans,
including
human
animal
hosts,
engineered
environments,
natural
agricultural
soils,
capture
extant
microbial,
metabolic
functional
potential.
This
comprehensive
catalog
includes
52,515
metagenome-assembled
representing
12,556
novel
candidate
species-level
operational
taxonomic
units
spanning
135
phyla.
expands
known
phylogenetic
diversity
bacteria
archaea
by
44%
is
broadly
available
for
streamlined
comparative
analyses,
interactive
exploration,
modeling
bulk
download.
We
demonstrate
utility
collection
understanding
secondary-metabolite
biosynthetic
potential
resolving
thousands
new
host
linkages
uncultivated
viruses.
resource
underscores
value
genome-centric
approaches
revealing
genomic
properties
microorganisms
that
affect
ecosystem
processes.
Nature,
Journal Year:
2020,
Volume and Issue:
577(7791), P. 519 - 525
Published: Jan. 15, 2020
The
origin
of
eukaryotes
remains
unclear1–4.
Current
data
suggest
that
may
have
emerged
from
an
archaeal
lineage
known
as
'Asgard'
archaea5,6.
Despite
the
eukaryote-like
genomic
features
are
found
in
these
archaea,
evolutionary
transition
archaea
to
unclear,
owing
lack
cultured
representatives
and
corresponding
physiological
insights.
Here
we
report
decade-long
isolation
Asgard
archaeon
related
Lokiarchaeota
deep
marine
sediment.
archaeon—'Candidatus
Prometheoarchaeum
syntrophicum'
strain
MK-D1—is
anaerobic,
extremely
slow-growing,
small
coccus
(around
550
nm
diameter)
degrades
amino
acids
through
syntrophy.
Although
intracellular
complexes
been
proposed
for
archaea6,
isolate
has
no
visible
organelle-like
structure.
Instead,
Ca.
P.
syntrophicum
is
morphologically
complex
unique
protrusions
long
often
branching.
On
basis
available
obtained
cultivation
genomics,
reasoned
interpretations
existing
literature,
propose
a
hypothetical
model
eukaryogenesis,
termed
entangle–engulf–endogenize
(also
E3)
model.
Isolation
characterization
most
closely
reveals
insights
into
how
evolved
prokaryotes.
ISME Communications,
Journal Year:
2021,
Volume and Issue:
1(1)
Published: May 20, 2021
The
study
of
microbial
communities
is
hampered
by
the
large
fraction
still
unknown
bacteria.
However,
many
these
species
have
been
isolated,
yet
lack
a
validly
published
name
or
description.
validation
names
for
novel
bacteria
requires
that
uniqueness
those
taxa
demonstrated
and
their
properties
are
described.
accepted
format
this
protologue,
which
can
be
time-consuming
to
create.
Hence,
research
fields
in
microbiology
biotechnology
will
greatly
benefit
from
new
approaches
reduce
workload
harmonise
generation
protologues.We
developed
Protologger,
bioinformatic
tool
automatically
generates
all
necessary
readouts
writing
detailed
protologue.
By
producing
multiple
taxonomic
outputs,
functional
features
ecological
analysis
using
16S
rRNA
gene
genome
sequences
single
species,
time
needed
gather
information
describing
substantially
reduced.
usefulness
Protologger
was
three
isolate
collections
describe
34
taxa,
encompassing
17
genera,
including
automatic
ecologically
functionally
relevant
names.
We
also
highlight
need
utilise
delineation
methods,
as
while
inconsistencies
between
each
method
occur,
combined
approach
provides
robust
placement.
open
source;
scripts
datasets
available,
along
with
webserver
at
www.protologger.de.
Nature Communications,
Journal Year:
2019,
Volume and Issue:
10(1)
Published: April 23, 2019
Abstract
Large
reservoirs
of
natural
gas
in
the
oceanic
subsurface
sustain
complex
communities
anaerobic
microbes,
including
archaeal
lineages
with
potential
to
mediate
oxidation
hydrocarbons
such
as
methane
and
butane.
Here
we
describe
a
previously
unknown
phylum,
Helarchaeota,
belonging
Asgard
superphylum
for
hydrocarbon
oxidation.
We
reconstruct
Helarchaeota
genomes
from
metagenomic
data
derived
hydrothermal
deep-sea
sediments
hydrocarbon-rich
Guaymas
Basin.
The
encode
methyl-CoM
reductase-like
enzymes
that
are
similar
those
found
butane-oxidizing
archaea,
well
several
potentially
involved
alkyl-CoA
Wood-Ljungdahl
pathway.
suggest
members
have
activate
subsequently
anaerobically
oxidize
hydrothermally
generated
short-chain
hydrocarbons.
Nature Communications,
Journal Year:
2019,
Volume and Issue:
10(1)
Published: April 18, 2019
Abstract
The
lack
of
microbial
genomes
and
isolates
from
the
deep
seabed
means
that
very
little
is
known
about
ecology
this
vast
habitat.
Here,
we
investigate
energy
carbon
acquisition
strategies
communities
three
petroleum
seeps
(3
km
water
depth)
in
Eastern
Gulf
Mexico.
Shotgun
metagenomic
analysis
reveals
each
sediment
harbors
diverse
chemoheterotrophs
chemolithotrophs.
We
recovered
82
metagenome-assembled
affiliated
with
21
different
archaeal
bacterial
phyla.
Multiple
encode
enzymes
for
anaerobic
oxidation
aliphatic
aromatic
compounds,
including
those
candidate
phyla
Aerophobetes,
Aminicenantes,
TA06
Bathyarchaeota.
Microbial
interactions
are
predicted
to
be
driven
by
acetate
molecular
hydrogen.
These
findings
supported
geochemistry,
metabolomics,
thermodynamic
modelling.
Overall,
infer
deep-sea
sediments
experiencing
thermogenic
hydrocarbon
inputs
harbor
phylogenetically
functionally
potentially
sustained
through
hydrocarbon,
hydrogen
metabolism.
Nature,
Journal Year:
2023,
Volume and Issue:
618(7967), P. 992 - 999
Published: June 14, 2023
Abstract
In
the
ongoing
debates
about
eukaryogenesis—the
series
of
evolutionary
events
leading
to
emergence
eukaryotic
cell
from
prokaryotic
ancestors—members
Asgard
archaea
play
a
key
part
as
closest
archaeal
relatives
eukaryotes
1
.
However,
nature
and
phylogenetic
identity
last
common
ancestor
remain
unresolved
2–4
Here
we
analyse
distinct
marker
datasets
an
expanded
genomic
sampling
evaluate
competing
scenarios
using
state-of-the-art
phylogenomic
approaches.
We
find
that
are
placed,
with
high
confidence,
well-nested
clade
within
sister
lineage
Hodarchaeales,
newly
proposed
order
Heimdallarchaeia.
Using
sophisticated
gene
tree
species
reconciliation
approaches,
show
analogous
evolution
genomes,
genome
in
involved
significantly
more
duplication
fewer
loss
compared
other
archaea.
Finally,
infer
was
probably
thermophilic
chemolithotroph
which
evolved
adapted
mesophilic
conditions
acquired
genetic
potential
support
heterotrophic
lifestyle.
Our
work
provides
insights
into
prokaryote-to-eukaryote
transition
platform
for
better
understanding
cellular
complexity
cells.