Non-synergistic effects of microplastics and submerged macrophytes on sediment microorganisms involved in carbon and nitrogen cycling
Xueyuan Gao,
Saibo Yuan,
Xiaowei Li
и другие.
Environmental Pollution,
Год журнала:
2025,
Номер
unknown, С. 126213 - 126213
Опубликована: Апрель 1, 2025
Язык: Английский
Tire Rubber Antioxidant 6PPD and 6PPD-quinone Disrupt the Energy Supply and Lipid Metabolism of Earthworms
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 5, 2025
With
the
increase
in
traffic
due
to
urbanization,
tire
wear
particles
(TWPs)
derived
compounds
persistently
accumulate
soil
environment.
This
study
addresses
critical
knowledge
gaps
regarding
ecotoxicological
effects
of
TWP-derived
contaminants,
N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine
(6PPD)
and
its
precursor,
6PPD-quinone
(6PPD-Q),
on
soil-dwelling
organisms.
The
findings
demonstrated
that
6PPD-Q
accumulated
at
a
higher
concentration
(6.77
±
0.124
ng/g)
earthworms
(Eisenia
fetida)
compared
6PPD
(5.41
0.002
ng/g),
triggering
more
severe
oxidative
stress
cellular
homeostatic
imbalance.
Specifically,
100
ng/g
significantly
elevated
reactive
oxygen
species
(ROS)
levels
by
180.77%
suppressed
acetylcholinesterase
(AchE)
Ca2+-ATPase
activities
17.14%
44.70%,
respectively.
Notably,
uniquely
disrupted
nitrogen
balance
disturbed
energy
supply
strongly
inhibiting
fatty
acid
degradation
peroxisome
proliferator-activated
receptor
(PPAR)
signaling
pathways.
Additionally,
profoundly
altered
abundance
key
microbes
microbial
network
stability,
affecting
intestinal
functions
such
as
bile
secretion,
hormone
synthesis,
lipid
digestion,
thus
exacerbating
metabolic
imbalance
earthworms.
deciphers
molecular
toxicity
mechanisms
contaminants
earthworms,
providing
crucial
insights
for
developing
risk
assessment
frameworks
mitigation
strategies
ecosystems.
Язык: Английский
Biochar derived from feedstock with high lignin content leads to better soil improvement performance in red soils: from the perspective of soil microbial regulation and carbon stabilization
Environmental Geochemistry and Health,
Год журнала:
2025,
Номер
47(6)
Опубликована: Май 9, 2025
Язык: Английский
Effects of Stocking Density of Filter-Feeding Fishes on Water Quality and Bacterial Community in Rice–Crayfish Polyculture System
Water,
Год журнала:
2024,
Номер
16(16), С. 2296 - 2296
Опубликована: Авг. 14, 2024
To
evaluate
the
effects
of
filter-feeding
fishes
on
water
quality
and
bacterial
community
in
rice–crayfish
coculture
system,
four
different
stocking
densities
bighead
carp
(0,
500,
1000,
1500
ind./200
m2)
were
set
up
systems.
Water
samples
systems
collected
biweekly
to
detect
dissolved
oxygen
(DO),
temperature
(T),
potential
Hydrogen
(pH),
ammonia
nitrogen
(NH4+-N),
nitrite
(NO2−-N),
nitrate
(NO3−-N),
total
(TN),
phosphorus
(TP),
Chlorophyll-a
(Chl-a);
was
analyzed
simultaneously,
then
correlation
between
microorganisms
studied.
The
results
showed
that
concentrations
TN,
TP,
NO2−-N,
NH4+-N
decreased
while
DO
NO3−-N
increased
along
with
breeding
process.
NO3−-N,
important
environmental
factors
affecting
structure
(p
<
0.05).
Bighead
had
an
impact
diversity,
richness,
evenness
communities
dominant
bacteria
density
groups
Proteobacteria,
Actinomycetes,
Bacteroidetes,
Cyanobacteria.
abundance
Bacteroidea
but
reduced
Cyanobacteria,
Proteobacteria.
introduction
promoted
conversion
phosphorus,
reducing
risk
cyanobacterial
blooms.
Group
1000
m2
exhibited
best
effect
removal
from
body.
Язык: Английский