Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 28, 2024
Abstract
Background
and
aims
The
soil
nitrogen
(N)
conversion
process
is
an
important
part
of
the
N
cycle
in
wetland
ecosystems,
which
regulates
content
available
determines
retention
status
N.
deposition
phosphorus
(P)
input
caused
by
human
activities
will
change
pool,
thereby
affecting
function
process.
However,
responses
pools
to
P
addition
QTP
remain
unknown.
Methods
In
this
study,
experiment
was
carried
out
for
two
years
wetlands
situated
on
Qinghai-Tibet
Plateau.
We
analyzed
effects
additions
pool
(i.e.,
blank
control
(CK),
(15
kg
ha
−
1
yr
,
N15),
P15),
NP
co-addition
N15P15)),
discussed
main
driving
factors.
Results
results
showed
that
significantly
increased
contents
total
(TN)
ammonia
(NH
4
+
-N)
0-40cm
layer,
decreased
dissolved
organic
(DON),
but
had
no
significant
effect
microbial
biomass
(MBN).
nitrate
(NO
3
under
N15
addition,
TN
storage
highest
P15
addition.
Under
each
treatment,
surface
(0-10cm)
more
sensitive
while
deep
relatively
stable.
Redundancy
analysis
(RDA)
carbon
(Explanation
=
40.80%),
density
8.70%),
carbon-to-nitrogen
ratio
8.40%)
were
environmental
factors
fraction
Conclusion
would
affect
stability
transformation
mainly
regulated
physicochemical
properties.
Frontiers in Plant Science,
Journal Year:
2024,
Volume and Issue:
14
Published: Jan. 22, 2024
The
soil
microbial
community
plays
a
critical
role
in
promoting
robust
plant
growth
and
serves
as
an
effective
defence
mechanism
against
root
pathogens.
Current
research
has
focused
on
unravelling
the
compositions
functions
of
diverse
taxa
rhizospheres
invaded
by
Ralstonia
solanacearum
,
however,
specific
mechanisms
which
key
groups
with
distinct
exert
their
effects
remain
unclear.
In
this
study,
we
employed
combination
amplicon
sequencing
metabolomics
analysis
to
investigate
principal
metabolic
rhizosphere
soil.
Compared
healthy
tobacco
samples,
bacterial
diversity
co-occurrence
network
diseased
were
significantly
reduced.
Notably,
certain
genera,
including
Gaiella
Rhodoplanes
MND1
(
Nitrosomonadaceae
),
found
be
more
abundant
plants
than
that
plants.
Eight
environmental
factors,
exchangeable
magnesium,
available
phosphorus,
pH,
crucial
factors
influencing
composition
community.
displayed
negative
correlations
cation
exchange
flux,
but
showed
positive
correlation
iron.
Furthermore,
metabolomic
revealed
pathways
related
synthesis
various
antibacterial
compounds
enriched
group.
results
indicate
genera
Polycyclovorans
Lysobacter
Pseudomonas
Nitrosospira
may
participate
compounds.
Collectively,
our
findings
contribute
in-depth
understanding
disease
resistance
within
communities
provide
theoretical
foundation
for
development
targeted
strategies
using
beneficial
microorganisms
suppress
occurrence.
Diversity,
Journal Year:
2025,
Volume and Issue:
17(3), P. 157 - 157
Published: Feb. 25, 2025
The
factors
driving
plant
species
diversity
in
different
forest
types
and
layers
are
still
insufficiently
understood.
Therefore,
we
investigated
the
limiting
of
nutrient
water
use
efficiency
three
(arbor,
shrub
herb
layers)
two
(plantation
natural
forest),
as
well
their
potential
relationship
with
diversity.
study
area
is
located
mid-latitude
evergreen
broad-leaved
ecosystems
southern
Anhui
province.
nitrogen
content
soil
(2.90
g
kg−1)
exceeded
national
average
for
(1.06
kg−1),
whereas
phosphorus
(0.43
was
below
such
(0.65
kg−1).
arbor
layer
comparatively
low,
exerted
a
more
substantial
influence
on
it.
In
contrast,
had
most
significant
impact
layers.
conclusion,
has
little
effect
growth
patterns
this
area,
while
there
role
regulating
succession
rates.
There
phenomenon
excessive
deposition
loss
ecosystem.
Despite
fact
that
indices
(the
Pielou
Evenness
Index,
Gleason
Richness
Shannon–Wiener
Diversity
Index
Simpson
Dominance
Index)
forests
were
higher
than
plantation
forests,
disparity
between
them
not
(p
>
0.05).
This
may
be
due
to
similar
climate.
findings
research
hold
significance
forecasting
alterations
diversity,
functionality,
influencing
within
forests.
Global Biogeochemical Cycles,
Journal Year:
2024,
Volume and Issue:
38(6)
Published: May 30, 2024
Abstract
Plant
invasion
and
land
reclamation
have
drastically
transformed
the
landscape
of
coastal
wetlands
globally,
but
their
resulting
effects
on
soil
organic
nitrogen
(SON)
mineralization
nitrous
oxide
(N
2
O)
production
remain
unclear.
In
this
study,
we
examined
21
across
southern
China
that
undergone
habitat
transformation
from
native
mudflats
(MFs)
to
Spartina
alterniflora
marshes
(SAs),
subsequently
earthen
aquaculture
ponds
(APs).
We
determined
SON
net
rate
presence
pertinent
enzyme‐encoding
genes,
namely
chiA
,
pepA
pepN
.
The
increased
by
46.7%
following
conversion
MFs
SAs
decreased
33.1%
in
response
APs.
Nevertheless,
there
was
no
significant
difference
estimated
efficiency
microbes
among
types.
results
structural
equation
modeling
showed
N‐mineralization
gene
abundance
played
a
major
role
regulating
mineralization.
Although
less
than
20%
be
labile/semi‐labile,
important
sustaining
N
O
production,
with
5.8%
mineralized
being
fed
into
production.
Overall,
our
findings
S.
both
content
rate,
which
would
turn
promote
further
proliferation
exotic
plant
along
coast.
APs
partially
mitigated
positive
turnover.
