Microbiome,
Journal Year:
2022,
Volume and Issue:
10(1)
Published: April 28, 2022
Phytoplankton
communities
significantly
contribute
to
global
biogeochemical
cycles
of
elements
and
underpin
marine
food
webs.
Although
their
uncultured
genomic
diversity
has
been
estimated
by
planetary-scale
metagenome
sequencing
subsequent
reconstruction
metagenome-assembled
genomes
(MAGs),
this
approach
yet
be
applied
for
complex
phytoplankton
microbiomes
from
polar
non-polar
oceans
consisting
microbial
eukaryotes
associated
prokaryotes.Here,
we
have
assembled
MAGs
chlorophyll
a
maximum
layers
in
the
surface
Arctic
Atlantic
Oceans
enriched
species
associations
(microbiomes)
with
focus
on
pico-
nanophytoplankton
heterotrophic
prokaryotes.
From
679
Gbp
50
million
genes
total,
recovered
143
medium
high
quality.
there
was
strict
demarcation
between
MAGs,
adjacent
sampling
stations
each
ocean
had
51-88%
common
most
Prasinophytes
Proteobacteria.
Phylogenetic
placement
revealed
eukaryotic
more
diverse
whereas
prokaryotic
were
Ocean.
Approximately
70%
protein
families
shared
both
prokaryotes
eukaryotes.
However,
unique
Atlantic.Our
study
provides
context
reveal
that
community
structure
likely
driven
significant
differences
environmental
conditions
warm
waters
tropical
subtropical
Video
Abstract.
PLoS ONE,
Journal Year:
2020,
Volume and Issue:
15(9), P. e0233872 - e0233872
Published: Sept. 23, 2020
Bacteria
are
essential
parts
of
ecosystems
and
the
most
diverse
organisms
on
planet.
Yet,
we
still
do
not
know
which
habitats
support
highest
diversity
bacteria
across
multiple
scales.
We
analyzed
alpha-,
beta-,
gamma-diversity
bacterial
assemblages
using
11,680
samples
compiled
by
Earth
Microbiome
Project.
found
that
soils
contained
richness
within
a
single
sample
(alpha-diversity),
but
sediment
displayed
gamma-diversity.
Sediment,
biofilms/mats,
inland
water
exhibited
variation
in
community
composition
among
geographic
locations
(beta-diversity).
Within
soils,
agricultural
lands,
hot
deserts,
grasslands,
shrublands
richness,
while
forests,
cold
tundra
biomes
consistently
harbored
fewer
species.
Surprisingly,
encompassed
similar
levels
beta-diversity
as
other
soil
biomes.
These
patterns
were
robust
to
alpha-
beta-
metrics
used
taxonomic
binning
approach.
Overall,
results
idea
spatial
environmental
heterogeneity
is
an
important
driver
diversity.
Gastroenterology report,
Journal Year:
2022,
Volume and Issue:
10
Published: Jan. 1, 2022
Horizontal
gene
transfer
(HGT)
in
the
microbiome
has
profound
consequences
for
human
health
and
disease.
The
spread
of
antibiotic
resistance
genes,
virulence,
pathogenicity
determinants
predominantly
occurs
by
way
HGT.
Evidence
exists
extensive
horizontal
gut
microbiome.
Phage
transduction
is
a
type
HGT
event
which
bacteriophage
transfers
non-viral
DNA
from
one
bacterial
host
cell
to
another.
abundance
tailed
bacteriophages
suggests
that
could
act
as
significant
mode
Here
we
review
detail
known
mechanisms
phage-mediated
HGT,
namely
specialized
generalized
transduction,
lateral
gene-transfer
agents,
molecular
piracy,
well
methods
used
detect
discuss
its
potential
implications
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Aug. 22, 2023
Soil-borne
pathogens
pose
a
major
threat
to
food
production
worldwide,
particularly
under
global
change
and
with
growing
populations.
Yet,
we
still
know
very
little
about
how
the
soil
microbiome
regulates
abundance
of
their
impact
on
plant
health.
Here
combined
field
surveys
experiments
investigate
relationships
properties
structure
function
contrasting
health
outcomes.
We
find
that
acidification
largely
impacts
bacterial
communities
reduces
capacity
soils
combat
fungal
pathogens.
In
vitro
assays
microbiomes
from
acidified
further
highlight
declined
ability
suppress
Fusarium,
globally
important
pathogen.
Similarly,
when
inoculate
healthy
plants
an
microbiome,
show
greatly
reduced
prevent
pathogen
invasion.
Finally,
metagenome
sequencing
untargeted
metabolomics
reveals
down
regulation
genes
associated
synthesis
sulfur
compounds
reduction
key
traits
related
metabolism
in
acidic
soils.
Our
findings
suggest
changes
disruption
specific
microbial
processes
induced
by
can
play
critical
role
for
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 29, 2024
Abstract
Agriculture
contributes
to
a
decline
in
local
species
diversity
and
above-
below-ground
biotic
homogenization.
Here,
we
conduct
continental
survey
using
1185
soil
samples
compare
microbial
communities
from
natural
ecosystems
(forest,
grassland,
wetland)
with
converted
agricultural
land.
We
combine
our
results
global
meta-analysis
of
available
sequencing
data
that
cover
more
than
2400
across
six
continents.
Our
combined
demonstrate
land
conversion
taxonomic
functional
homogenization
bacteria,
mainly
driven
by
the
increase
geographic
ranges
taxa
croplands.
find
20%
phylotypes
are
decreased
23%
increased
conversion,
croplands
enriched
Chloroflexi,
Gemmatimonadota,
Planctomycetota,
Myxcoccota
Latescibacterota
.
Although
there
is
no
significant
difference
composition
between
land,
genes
involved
nitrogen
fixation,
phosphorus
mineralization
transportation
depleted
cropland.
provide
insight
into
consequences
land-use
change
on
diversity.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: April 25, 2024
Abstract
The
root-associated
microbiota
plays
an
important
role
in
the
response
to
environmental
stress.
However,
underlying
mechanisms
controlling
interaction
between
salt-stressed
plants
and
are
poorly
understood.
Here,
by
focusing
on
a
salt-tolerant
plant
wild
soybean
(
Glycine
soja
),
we
demonstrate
that
highly
conserved
microbes
dominated
Pseudomonas
enriched
root
rhizosphere
of
plant.
Two
corresponding
isolates
confirmed
enhance
salt
tolerance
soybean.
Shotgun
metagenomic
metatranscriptomic
sequencing
reveal
motility-associated
genes,
mainly
chemotaxis
flagellar
assembly,
significantly
expressed
salt-treated
samples.
We
further
find
roots
stressed
secreted
purines,
especially
xanthine,
which
induce
motility
isolates.
Moreover,
exogenous
application
for
xanthine
non-stressed
results
enrichment,
reproducing
shift
root.
Finally,
mutant
analysis
shows
related
gene
cheW
is
required
toward
enhancing
tolerance.
Our
study
proposes
recruits
beneficial
species
exudating
key
metabolites
(i.e.,
purine)
against
Microbiome,
Journal Year:
2020,
Volume and Issue:
8(1)
Published: April 2, 2020
Abstract
Background
The
Arctic
and
Antarctic
are
the
two
most
geographically
distant
bioregions
on
earth.
Recent
sampling
efforts
following
metagenomics
have
shed
light
global
ocean
microbial
diversity
function,
yet
microbiota
of
polar
regions
has
not
been
included
in
such
analyses.
Results
Here
a
metagenomic
study
seawater
samples
(
n
=
60)
collected
from
different
depths
at
28
locations
zones
was
performed,
together
with
metagenomes
Tara
Oceans.
More
than
7500
(19%)
seawater-derived
operational
taxonomic
units
could
be
identified
Oceans
datasets,
more
3,900,000
protein-coding
gene
orthologs
had
no
hits
Ocean
Microbial
Reference
Gene
Catalog.
Analysis
214
metagenome
assembled
genomes
(MAGs)
recovered
microbiomes,
revealed
strains
that
prevalent
while
nearly
undetectable
temperate
seawater.
Metabolic
pathway
reconstruction
for
these
microbes
suggested
versatility
saccharide
lipids
biosynthesis,
nitrate
sulfate
reduction,
CO
2
fixation.
Comparison
between
microbiomes
antibiotic
resistance
genes
were
enriched
functions
like
DNA
recombination
Antarctic.
Conclusions
Our
data
highlight
occurrence
dominant
locally
unique
functional
traits
environmental
adaption,
provide
foundation
analyzing
microbiome
complete
perspective.