Geoderma,
Journal Year:
2023,
Volume and Issue:
433, P. 116462 - 116462
Published: April 3, 2023
Microbial
methanogenesis
in
paddy
soils
contributes
approximately
one-fifth
of
global
anthropogenic
methane
(CH4)
release,
creating
severe
negative
climate
feedback.
The
dynamics
iron
oxides
flooded
fields,
as
well
temperature
changes,
have
an
impact
on
CH4
production.
However,
the
relationship
between
two,
their
interactive
mechanisms
influencing
production
and
microbial
communities
soils,
is
not
yet
clear.
Therefore,
we
investigated
effects
(15,
25
35
°C)
oxide
(ferrihydrite)
methanogenic
community
structure
two
Chinese
one
subtropical
temperate.
We
characterized
shifts
using
high-throughput
sequencing
bacteria,
archaea
mcrA
genes
following
anaerobic
incubation
for
90
days.
Our
results
showed
that
significantly
promoted
Fe
reduction
both
together
regulated
by
reducing
number
methanogens.
Additionally,
sensitivity
was
higher
temperate
than
soil.
also
demonstrated
ferrihydrite
can
inhibit
relative
abundance
Methanosarcinales
altering
patterns
methanogens
these
soils.
Likewise,
increases
changes
Methanobacteriales,
promoting
methanogenesis.
Overall,
our
provide
new
insights
into
role
regulating
greenhouse
gas
emissions
from
Microbiome,
Journal Year:
2023,
Volume and Issue:
11(1)
Published: April 5, 2023
Abstract
Background
Mangrove
ecosystems
are
considered
as
hot
spots
of
biogeochemical
cycling,
yet
the
diversity,
function
and
coupling
mechanism
microbially
driven
cycling
along
sediment
depth
mangrove
wetlands
remain
elusive.
Here
we
investigated
vertical
profile
methane
(CH
4
),
nitrogen
(N)
sulphur
(S)
genes/pathways
their
potential
mechanisms
using
metagenome
sequencing
approaches.
Results
Our
results
showed
that
metabolic
pathways
involved
in
CH
,
N
S
were
mainly
shaped
by
pH
acid
volatile
sulphide
(AVS)
a
depth,
AVS
was
critical
electron
donor
impacting
oxidation
denitrification.
Gene
families
denitrification
significantly
(
P
<
0.05)
decreased
could
be
coupled
S-driven
denitrifiers,
such
Burkholderiaceae
Sulfurifustis
surface
(0–15
cm).
Interestingly,
all
denitrifier
metagenome-assembled
genomes
(MAGs)
appeared
to
incomplete
denitrifiers
with
nitrate/nitrite/nitric
oxide
reductases
(Nar/Nir/Nor)
but
without
nitrous
reductase
(Nos),
suggesting
sulphide-utilizing
groups
might
an
important
contributor
2
O
production
sediment.
methanogenesis
reduction
increased
depth.
Based
on
both
network
MAG
analyses,
sulphate-reducing
bacteria
(SRB)
develop
syntrophic
relationships
anaerobic
oxidizers
(ANMEs)
direct
transfer
or
zero-valent
sulphur,
which
would
pull
forward
co-existence
methanogens
SRB
middle
deep
layer
sediments.
Conclusions
In
addition
offering
perspective
distribution
genes/pathways,
this
study
emphasizes
role
emissions
various
possible
ANMEs
The
exploration
provides
novel
insights
into
future
synthetic
microbial
community
construction
analysis.
This
also
has
implications
for
predicting
ecosystem
functions
within
context
environmental
global
change.
Climate smart agriculture.,
Journal Year:
2024,
Volume and Issue:
1(1), P. 100003 - 100003
Published: May 3, 2024
Agriculture,
broadly
defined
to
include
crop
and
livestock
production,
forestry,
aquaculture
fishery,
represents
a
key
source
or
sink
of
greenhouse
gas
emissions.
It
is
also
vulnerable
sector
under
climate
change.
The
term
climate-smart
agriculture
has
been
widely
used
since
its
inception
in
2010,
but
no
clear
unified
understanding
scientific
meaning
exists.
Here,
we
systematically
analyzed
the
relationship
between
change
interpreted
definition
agriculture.
We
believe
that
modern
production
approach
coordinatively
promote
food
security,
mitigation
benefits
agricultural
adaptation
towards
Sustainable
Development
Goals.
In
addition,
due
worsening
global
situation,
expounded
on
urgency
major
challenges
promoting
