Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: Dec. 20, 2023
Prokaryotic
communities
play
important
roles
in
sewer
sediment
ecosystems,
but
the
community
composition,
functional
potential,
and
assembly
mechanisms
of
prokaryotic
are
still
poorly
understood.
Here,
we
studied
different
urban
areas
(multifunctional,
commercial,
residential
areas)
through
16S
rRNA
gene
amplicon
sequencing.
Our
results
suggested
that
compositions
varied
significantly
among
areas.
Desulfomicrobium,
Desulfovibrio,
Desulfobacter
involved
sulfur
cycle
some
hydrolytic
fermentation
bacteria
were
enriched
multifunctional
area,
while
Methanospirillum
Methanoregulaceae,
which
related
to
methane
metabolism
discriminant
taxa
commercial
area.
Physicochemical
properties
closely
overall
changes
(p
<
0.001),
especially
nutrient
levels
sediments
(i.e.,
total
nitrogen
phosphorus)
pH.
Network
analysis
revealed
network
area
was
more
complex
than
other
areas,
suggesting
higher
stability
Stochastic
processes
dominated
construction
community.
These
expand
our
understanding
characteristics
sediment,
providing
a
new
perspective
for
studying
structure.
Water Research,
Journal Year:
2025,
Volume and Issue:
274, P. 123092 - 123092
Published: Jan. 4, 2025
Chlorine,
the
most
widely
utilized
disinfectant
for
drinking
water
globally,
has
recently
been
implicated
in
facilitating
spread
of
antibiotic
resistance
genes
(ARGs),
raising
concerns
about
its
underestimated
environmental
and
ecological
risks.
However,
given
current
fragmented
research
focus
results,
a
comprehensive
understanding
potential
mechanisms
influencing
factors
behind
chlorination-promoted
ARGs
transmission
systems
is
crucial.
This
work
first
to
systematically
review
variations
abundance,
mechanisms,
factors,
mitigation
strategies
related
during
chlorination
process.
The
results
indicated
that
could
induce
genetic
mutations
promote
horizontal
gene
transfer
through
multiple
pathways,
including
increased
reactive
oxygen
species,
enhanced
membrane
permeability,
stimulation
SOS
response,
activation
efflux
pumps.
In
addition,
this
delves
into
significant
discoveries
regarding
affecting
ARG
water,
such
as
chlorine
concentration,
reaction
time,
disinfection
byproducts,
pipe
materials,
biofilms,
matrix.
A
series
effective
from
source
point-of-use
were
proposed
aimed
at
mitigating
risks
system.
Finally,
we
address
existing
challenges
outline
future
directions
overcome
these
bottlenecks.
Overall,
aims
advance
our
role
dissemination
inspire
innovative
ideas
optimizing
techniques,
minimizing
transmission,
enhancing
safety
water.
