Water,
Journal Year:
2022,
Volume and Issue:
14(24), P. 4097 - 4097
Published: Dec. 15, 2022
This
study
aimed
to
investigate
the
effects
of
thermal
stratification
and
complete
mixing
conditions
on
bacterial
diversity
a
deep
alkaline
lake.
For
this
purpose,
water
sediment
samples
were
collected
during
winter
turnover
periods,
communities
assessed
by
metabarcoding.
The
results
showed
that
temperature
shaped
community
patterns
in
While
high
similarity
period,
had
distinctive
epilimnion
hypolimnion
stratification.
evenness
increased
with
depth,
whereas
sediments
more
even
diverse
than
water.
Proteobacteria
members
dominated
representing
41%
62%
total
reads
samples.
Particularly,
Gammaproteobacteria
was
major
class
found
sediment;
higher
abundances
recorded
period
33–51%.
Additionally,
Actinobacteria
species
abundant
22–52%
all
period.
Due
lake,
homogenized
structure
observed
lake
minor
spatial
changes,
clear
divergence
between
hypolimnion.
On
other
hand,
stable
profile.
BMC Microbiology,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: March 31, 2025
Abstract
Background
Industrial
waste,
agricultural
runoff
and
untreated
sewage
contaminate
the
Nile,
leaving
a
toxic
legacy
in
its
sediments.
Organohalides-polluted
sediment
particular
poses
serious
public
health
risks
detrimental
effects
on
aquatic
life.
Sediment
microbiomes
may
harbor
bacterial
strains
that
could
be
utilized
bioremediation
of
such
pollutants.
Material
methods
Two
from
polluted
River
Nile
sediments
were
analyzed
by
using
16S
rRNA
gene
amplicon
sequencing.
In
addition,
PICRUSt
analysis
based
data
was
used
to
explore
organohalide
respiring
bacteria
(OHRB)
genera
their
corresponding
respiration
(OHR)
activity.
Microcosm
studies
performed
validate
potential
for
dechlorination
activity
sediment.
Dechlorination
parent
chloroethenes
into
daughter
end
product
detected
gas
chromatography
coupled
with
flame
ionization
detection
analysis.
Results
Analysis
sequences
EZ-biocloud
server
identified
Proteobacteria
as
dominant
phylum
both
microbiomes,
Bacteroidetes
Chloroflexi
prevalent
RNS1
Chlorobi
RNS2
PCR
analyses
several
OHRB
genera,
including
Dehalococcoides
,
Dehalogenimonas
Desulfomonile
Desulfovibrio
Geobacter
suggesting
OHR
Further
evidence
provided
functional
prediction
analysis,
which
suggested
presence
reductive
dehalogenases
biomarkers
associated
samples.
Specifically,
predicted
genes
tetrachloroethene
dehalogenase
3-chloro-4-hydroxyphenylacetate
dehalogenase,
previously
linked
OHR.
confirmed
dichloroethene.
Conclusion
This
study
demonstrates
industrialized
area
harbors
distinct
enclosing
various
providing
substantial
It
also
provides
Environmental DNA,
Journal Year:
2025,
Volume and Issue:
7(2)
Published: March 1, 2025
ABSTRACT
Environmental
pollution
is
regarded
as
one
of
the
most
substantial
threats
facing
freshwater
ecosystems.
Two
contaminant
types
in
particular,
metals
and
pesticides,
represent
both
long‐term
widespread
hazards
to
aquatic
environments.
Contamination
negatively
affects
health
flora
fauna.
Constructed
wetlands
are
an
important
mitigation
measure
for
managing
stormwater
urban
landscapes.
Given
that
constructed
designed
capture
retain
contaminants
from
sediments,
resulting
chemical
profiles
largely
representative
contamination
surrounding
local
catchment
DNA
expanding
field
monitoring,
introducing
ability
assess
biological
quickly
reliably,
knowledge
how
ecosystems
down
a
microbial
level.
Here,
we
used
environmental
(eDNA)
metabarcoding
characterize
sedimentary
nine
rural
wetland
with
low
levels
variation
community
structures
between
sites
well
inlet
outlet
within
each
site.
We
found
significant
communities
(reference)
wetlands,
some
over
half
inlets
outlets.
The
bacterial
phyla
Cyanobacteria
Proteobacteria
were
mostly
driving
this
variation,
along
Planctomycetota
Bacteroidota.
also
correlations
structure
occurrences,
particularly
zinc
barium,
latter
not
previously
reported
be
associated
dynamics
Our
study
validates
eDNA
reliably
evaluate
highlights
its
value
assessment
prediction
these
International Journal of Environmental Research and Public Health,
Journal Year:
2022,
Volume and Issue:
19(21), P. 13888 - 13888
Published: Oct. 26, 2022
Indicators
can
monitor
ecological
environment
changes
and
help
maintain
balance.
Bioindicators
are
divided
into
animal,
plant,
microbial
indicators,
of
which
animal
plant
indicators
have
previously
been
the
most
researched,
but
drawn
attention
recently
owing
to
their
high
sensitivity
potential
for
use
in
monitoring
environmental
changes.
To
date,
reviews
studies
animals
plants
as
indicator
species
frequently
conducted,
research
on
microorganisms
rare.
In
this
review,
we
summarize
analyze
using
a
variety
ecosystems,
such
forests,
deserts,
aquatic
plateau
artificial
contained
wetlands,
farmlands,
mining
ecosystems.
This
review
provides
useful
information
further
reflect
different
