iScience,
Год журнала:
2022,
Номер
25(6), С. 104403 - 104403
Опубликована: Май 13, 2022
Environmental
pollution
caused
by
petroleum
hydrocarbons
is
being
paid
more
and
attention
worldwide.
Surfactants
are
able
to
improve
the
solubility
of
hydrocarbons,
but
their
effects
on
hydrocarbon
degradation
in
composting
systems
still
unclear.
In
this
study,
microbial
community
succession
were
investigated
adding
rhamnolipids
during
organic
wastes.
The
results
showed
that
compost
addition
could
effectively
reduce
content
with
an
efficiency
73.52%,
compared
53.81%
for
treatment
without
addition.
Network
analyses
Structural
Equation
Model
suggested
there
multiple
potential
degraders
microbes
might
be
regulated
nitrogen.
findings
study
can
also
provide
implication
pollutants
from
oil-polluted
soil,
technology
potentially
applied
industrial
scale
practice.
Environmental Microbiome,
Год журнала:
2023,
Номер
18(1)
Опубликована: Окт. 14, 2023
Abstract
Background
Decomposition
of
plant
biomass
is
vital
for
carbon
cycling
in
terrestrial
ecosystems.
In
waterlogged
soils
including
paddy
fields
and
natural
wetlands,
degradation
generates
the
largest
source
global
methane
emission.
However,
intricate
process
by
diverse
soil
microorganisms
remains
poorly
characterized.
Here
we
report
a
chemical
metagenomic
investigation
into
mechanism
straw
decomposition
soil.
Results
The
analysis
16-day
microcosm
incubation
revealed
that
could
be
divided
two
stages
based
on
dynamics
methane,
short
chain
fatty
acids,
dissolved
organic
monosaccharides.
Metagenomic
relative
abundance
glucoside
hydrolase
(GH)
encoding
genes
cellulose
increased
rapidly
during
initial
stage
(3–7
days),
while
involved
hemicellulose
later
(7–16
days).
increase
GH
was
derived
mainly
from
Firmicutes
Bacteroidota
contributed
mostly
to
genes.
Flagella
assembly
were
prevalent
but
scarce
.
Wood–Ljungdahl
pathway
(WLP)
present
not
detected
Overall,
contained
proportion
total
GHs
highest
number
carbohydrate
active
enzymes
gene
clusters
our
metagenomes.
strong
capacity
phylum
degrade
polymers
specifically
attributed
Bacteroidales
Chitinophagales
orders,
latter
has
been
previously
recognized.
Conclusions
This
study
collaborating
sequential
contribution
microbial
taxa
functional
residues
with
property
mobility,
WLP
breakdown
polymers,
became
abundant
possibly
responsible
hemicellulosic
stage.
Fermentation,
Год журнала:
2023,
Номер
9(8), С. 755 - 755
Опубликована: Авг. 13, 2023
Modern
society
is
characterised
by
its
outstanding
capacity
to
generate
waste.
Lignocellulosic
biomass
most
abundant
in
nature
and
biorenewable
contains
energy
sources
formed
via
biological
photosynthesis
from
the
available
atmospheric
carbon
dioxide,
water,
sunlight.
It
composed
of
cellulose,
hemicellulose,
lignin,
constituting
a
complex
polymer.
The
traditional
disposal
these
types
waste
associated
with
several
environmental
public
health
effects;
however,
they
could
be
harnessed
produce
value-added
products
clean
energy.
Moreover,
increase
population
industrialisation
have
caused
current
resources
continuously
exploited,
resulting
depletion
global
fuel
reservoirs.
overexploitation
has
negative
effects
such
as
climate
change,
exacerbating
greenhouse
gas
emissions.
In
quest
meet
world’s
future
needs
adequate
management
waste,
anaerobic
digestion
lignocellulosic
remained
focus,
attracting
great
interest
sustainable
alternative
fossil
resources.
However,
substrate
characteristics
offer
recalcitrance
process,
which
negatively
impacts
methane
yield.
Nevertheless,
biodigestibility
substrates
can
enhanced
through
chemical,
physical,
pretreatment
methods,
leading
improvement
biogas
yields.
Furthermore,
co-digestion
other
adding
specific
nutrients
trace
elements
or
inoculum
will
help
adjust
level
appropriate
for
efficient
increased
Molecules,
Год журнала:
2023,
Номер
28(15), С. 5915 - 5915
Опубликована: Авг. 6, 2023
Actinomycetes
inhabit
both
terrestrial
and
marine
ecosystems
are
highly
proficient
in
producing
a
wide
range
of
natural
products
with
diverse
biological
functions,
including
antitumor,
immunosuppressive,
antimicrobial,
antiviral
activities.
In
this
review,
we
delve
into
the
life
cycle,
ecology,
taxonomy,
classification
actinomycetes,
as
well
their
varied
bioactive
metabolites
recently
discovered
between
2015
2023.
Additionally,
explore
promising
strategies
to
unveil
investigate
new
metabolites,
encompassing
genome
mining,
activation
silent
genes
through
signal
molecules,
co-cultivation
approaches.
By
presenting
comprehensive
up-to-date
hope
offer
potential
solution
uncover
novel
compounds
essential
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июль 17, 2024
Abstract
With
the
continuous
expansion
of
saline
soils
under
climate
change,
understanding
eco-evolutionary
tradeoff
between
microbial
mitigation
carbon
limitation
and
maintenance
functional
traits
in
represents
a
significant
knowledge
gap
predicting
future
soil
health
ecological
function.
Through
shotgun
metagenomic
sequencing
coastal
along
salinity
gradient,
we
show
contrasting
directions
bacteria
archaea
that
manifest
changes
to
genome
size
potential
microbiome.
In
salt
environments
with
high
requirements,
exhibit
reduced
sizes
associated
depletion
metabolic
genes,
while
display
larger
genomes
enrichment
salt-resistance,
metabolic,
carbon-acquisition
genes.
This
suggests
conserve
energy
through
streamlining
when
facing
stress,
invest
pathways
broaden
their
resource
usage.
These
findings
suggest
divergent
adaptations
stress
amongst
clades
serve
as
foundation
for
response
microbiomes
escalating
change.
Biology,
Год журнала:
2022,
Номер
11(8), С. 1242 - 1242
Опубликована: Авг. 20, 2022
Soil
microorganisms
play
an
important
role
in
determining
nutrient
cycling.
The
integration
of
fish
into
rice
fields
can
influence
the
diversity
and
structural
composition
soil
microbial
communities.
However,
regarding
rice-fish
co-culture
(RF)
farming
system
Thailand,
study
microbes
is
still
limited.
Here,
we
aim
to
compare
diversity,
community
composition,
functional
structure
bacterial
communities
between
RF
monoculture
(MC)
systems
identify
environmental
factors
shaping
composition.
Bacterial
taxonomy
was
observed
using
16s
rRNA
gene
amplicon
sequencing,
structures
were
predicted
based
on
their
sequences.
results
showed
that
organic
carbon,
total
nitrogen
(TN),
matter,
available
phosphorous,
clay
content
significantly
higher
than
MC.
most
dominant
taxa
across
both
paddy
belonged
Actinobacteria,
Chloroflexi,
Proteobacteria,
Acidobacteria,
Planctomycetes.
Nitrosporae,
Rokubacteria,
GAL15,
Elusimicrobia
different
fields.
At
genus
level,
Bacillus,
Anaeromyxobacter,
HSB
OF53-F07
predominant
genera
abundant
MC
whereas
Bacillus.
positively
correlated
with
magnesium
sand
content,
while
pH,
TN,
content.
Nitrogen
fixation,
aromatic
compound
degradation,
hydrocarbon
degradation
more
RF,
cellulolysis,
nitrification,
ureolysis,
phototrophy
groups
enzymes
involved
ecosystems
included
phosphatase,
β-glucosidase,
cellulase,
urease.
These
provide
novel
insights
integrated
field
as
efficient
agricultural
development
strategy
for
enhancing
increase
fertility.
Biology,
Год журнала:
2023,
Номер
12(4), С. 501 - 501
Опубликована: Март 26, 2023
Rice
straw
and
stubble
burning
is
widely
practiced
to
clear
fields
for
new
crops.
However,
questions
remain
about
the
effects
of
fire
on
soil
bacterial
communities
properties
in
paddy
fields.
Here,
five
adjacent
farmed
were
investigated
central
Thailand
assess
changes
after
burning.
Samples
prior
burning,
immediately
1
year
obtained
from
depths
0
5
cm.
The
results
showed
that
pH,
electrical
conductivity,
NH4-N,
total
nitrogen,
nutrients
(available
P,
K,
Ca,
Mg)
significantly
increased
due
an
ash
content
soil,
whereas
NO3-N
decreased
significantly.
these
values
returned
initial
values.
Chloroflexi
dominant
bacteria,
followed
by
Actinobacteria
Proteobacteria.
At
abundance
remarkably,
Actinobacteria,
Proteobacteria,
Verrucomicrobia,
Gemmatimonadetes
abundances
increased.
Bacillus,
HSB
OF53-F07,
Conexibacter,
Acidothermus
but
lower
These
bacteria
may
be
highly
resistant
heat,
grow
slowly.
Anaeromyxobacter
Candidatus
Udaeobacter
dominated
most
likely
because
their
rapid
growth
fact
they
occupy
areas
with
nutrient
levels
fires.
Amidase,
cellulase,
chitinase
organic
matter
levels,
β-glucosidase,
chitinase,
urease
positively
correlated
nitrogen
level.
Although
clay
moisture
strongly
community’s
composition,
negative
correlations
found
urease.
In
this
study,
rice
standing
burnt
under
high
within
a
very
short
time,
suggesting
was
not
severe
enough
raise
temperature
change
microbial
community
diversity
indices,
which
noticeable
Environment International,
Год журнала:
2024,
Номер
184, С. 108469 - 108469
Опубликована: Фев. 1, 2024
Biochar
promotes
microbial
metabolic
activities
and
reduces
N2O
on
aerobic
composting.
However,
the
effects
of
magnetic
biochar
(MBC)
succession
emissions
during
pig
manure
composting
remain
unclear.
Herein,
a
42-day
experiment
was
conducted
with
five
treatment
regimes:
without
(CK),
5%
manure-based
(5%
PBC),
2%
MBC
(2%
MBC),
MBC)
7.5%
(7.5%
MBC)),
to
clarify
variation
in
functional
microorganisms
genes
associated
nitrogen
direct
interspecies
electron
transfer
via
metagenomics.
Fourier-transform
infrared
spectroscopy
showed
that
possessed
more
stable
aromatic
structures
than
(PBC),
indicating
its
greater
potential
for
nitrous
oxide
reduction.
treatments
were
effective
organic
matter
improving
carbon/nitrogen
ratio
PBC.
The
composition
varied
significantly,
dominant
phyla
shifting
from
Firmicutes
Proteobacteria,
Actinobacteria,
Bacteroidota.
Network
hierarchical
clustering
analyses
enhanced
interactions
microbes
(Proteobacteria
Bacteroidota)
accelerated
process.
addition
assimilatory
nitrate
reduction
slowed
dissimilatory
denitrification.
Mantel
test
demonstrated
potentially
helped
regulate
nutrients
affected
genes.
These
findings
shed
light
role
mitigating
greenhouse
gas
