bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 9, 2024
Abstract
Climate
change
poses
significant
risks
to
freshwater
ecosystems,
potentially
exacerbating
harmful
cyanobacterial
blooms
and
antibiotic
resistance.
We
investigated
these
dual
threats
in
Cosseys
Reservoir,
New
Zealand,
by
simulating
short-term
warming
scenarios
assessing
the
role
of
oxidative
stress.
Microcosms
were
subjected
Base
(22°C),
Normal
(24°C),
projected
Future
(27°C)
temperatures,
with
additional
treatments
including
reactive
oxygen
species
(ROS).
Metagenomic
analysis
revealed
substantial
restructuring
microbial
communities
under
conditions.
Cyanobacterial
abundance
increased
from
6.11%
(initial)
20.53%
at
24°C
10.66%
27°C.
Notably,
ROS
addition
mimicked
effects
temperature
increase
on
proliferation.
Toxin-producing
families,
Microcystaceae
Nostocaceae
,
proliferated
significantly.
The
microcystin
synthesis
gene
(
mcy
)
showed
a
strong
positive
association
(R²
=
0.88)
abundance.
Moreover,
cyanobacteria
exhibited
enhanced
nutrient
acquisition
pstS
gene,
R²
0.69)
upregulated
nitrogen
metabolism
pathways
Concurrently,
we
observed
marked
resistance
(ARG)
rising
temperatures.
relative
multidrug
genes
was
consistently
high
across
all
conditions
(50.82
%
total
ARGs).
stress
further
intensified
ARG
proliferation,
particularly
for
efflux
pump
e.g.
acrB
adeJ
ceoB
emrB
MexK
muxB
).
Co-association
network
identified
key
antibiotic-resistant
bacteria
Streptococcus
pneumoniae
Acinetobacter
baylyi
ARGs
rpoB2
bacA
central
dissemination
This
study
demonstrates
that
even
modest
increases
(2-5°C)
can
promote
both
ecosystems
over
short
time
scales.
synergistic
underscore
complex
challenges
posed
climate
water
quality
public
health.
Highlights
Short-term
promotes
toxic
freshwater.
Harmful
their
metabolic
potential
Reactive
mimic
exacerbate
effects.
Oxidative
response
strongly
correlate
networks
identify
host
pathogen
spread.
Sustainability,
Год журнала:
2024,
Номер
16(8), С. 3398 - 3398
Опубликована: Апрель 18, 2024
This
study
aimed
to
investigate
the
impact
of
Rekulter,
a
lignite-based
fertilizer,
on
various
soil
parameters,
with
focus
promoting
sustainable
agricultural
practices.
A
multi-year
field
trial
was
conducted
in
Klon,
Poland,
employing
potentiometric
techniques,
spectrophotometry,
and
gas
chromatography-mass
spectrometry
analyze
samples.
Established
laboratory
procedures
were
used
assess
pH
value,
sorption
properties,
granulometric
composition,
organic
carbon
content
(OC),
total
nitrogen
(TN),
polycyclic
aromatic
hydrocarbons
(PAHs),
phenolic
compounds
(PCs),
fractional
composition
matter.
Hypothesis-driven
experiments,
including
Analysis
Variance
(ANOVA)
Tukey’s
HSD
post
hoc
tests,
utilized
examine
effects
Rekulter
application
characteristics.
Significant
differences
found
matter
among
variants.
underscores
dose-dependent
properties
provides
insights
into
optimizing
rates
for
management.
Recommendations
include
tailoring
interventions
based
characteristics
environmental
considerations,
integrating
amendments
mineral
fertilizers,
balanced
approaches
reclamation.
research
contributes
ongoing
efforts
improve
sustainability
mitigate
impacts,
guiding
practices
that
balance
productivity
stewardship.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 9, 2024
Abstract
Climate
change
poses
significant
risks
to
freshwater
ecosystems,
potentially
exacerbating
harmful
cyanobacterial
blooms
and
antibiotic
resistance.
We
investigated
these
dual
threats
in
Cosseys
Reservoir,
New
Zealand,
by
simulating
short-term
warming
scenarios
assessing
the
role
of
oxidative
stress.
Microcosms
were
subjected
Base
(22°C),
Normal
(24°C),
projected
Future
(27°C)
temperatures,
with
additional
treatments
including
reactive
oxygen
species
(ROS).
Metagenomic
analysis
revealed
substantial
restructuring
microbial
communities
under
conditions.
Cyanobacterial
abundance
increased
from
6.11%
(initial)
20.53%
at
24°C
10.66%
27°C.
Notably,
ROS
addition
mimicked
effects
temperature
increase
on
proliferation.
Toxin-producing
families,
Microcystaceae
Nostocaceae
,
proliferated
significantly.
The
microcystin
synthesis
gene
(
mcy
)
showed
a
strong
positive
association
(R²
=
0.88)
abundance.
Moreover,
cyanobacteria
exhibited
enhanced
nutrient
acquisition
pstS
gene,
R²
0.69)
upregulated
nitrogen
metabolism
pathways
Concurrently,
we
observed
marked
resistance
(ARG)
rising
temperatures.
relative
multidrug
genes
was
consistently
high
across
all
conditions
(50.82
%
total
ARGs).
stress
further
intensified
ARG
proliferation,
particularly
for
efflux
pump
e.g.
acrB
adeJ
ceoB
emrB
MexK
muxB
).
Co-association
network
identified
key
antibiotic-resistant
bacteria
Streptococcus
pneumoniae
Acinetobacter
baylyi
ARGs
rpoB2
bacA
central
dissemination
This
study
demonstrates
that
even
modest
increases
(2-5°C)
can
promote
both
ecosystems
over
short
time
scales.
synergistic
underscore
complex
challenges
posed
climate
water
quality
public
health.
Highlights
Short-term
promotes
toxic
freshwater.
Harmful
their
metabolic
potential
Reactive
mimic
exacerbate
effects.
Oxidative
response
strongly
correlate
networks
identify
host
pathogen
spread.