Critical Reviews in Environmental Science and Technology,
Journal Year:
2024,
Volume and Issue:
54(21), P. 1569 - 1591
Published: April 3, 2024
Biological
waste
treatment
technology
is
currently
the
world's
largest
application
process,
and
its
functional
achievement
mainly
relies
on
complex
microbial
communities.
However,
system
in
such
engineered
ecosystems
has
been
considered
a
"black
box."
Over
past
decade,
with
development
of
molecular
biotechnology
next-generation
sequencing
technologies,
exploration
boxes"
gradually
deepened.
In
particular,
role
ecological
forces
uncovering
regulating
communities
largely
recognized
provided
novel
insights
into
link
between
engineering
objectives.
study
community
ecology
still
early
infancy
faces
grand
challenges
bridging
principles
theory.
this
review,
we
discuss
recent
advances
understanding
behavior
biological
systems,
including
biodiversity
influencing
factors,
neglected
rare
species,
interactions,
assembly
mechanisms.
We
emphasize
importance
these
perspectives
revealing
functions,
as
enhancement
contaminant
removal
operational
stability
ecosystems.
cross-validation
analysis
results
necessary
to
yield
valid
real
information
guide
improvement
ecosystem
performance.
Multi-omics
approaches
synthetic
biology
are
preferred
ways
theory
Environmental Science and Ecotechnology,
Journal Year:
2021,
Volume and Issue:
9, P. 100144 - 100144
Published: Dec. 29, 2021
The
contaminant
of
herbicide
clopyralid
(3,6-dichloro-2-
pyridine-carboxylic
acid,
CLP)
poses
a
potential
threat
to
the
ecological
system.
However,
there
is
general
lack
research
devoted
perturbation
CLP
bio-denitrification
process,
and
its
biological
response
mechanism
remains
unclear.
Herein,
long-term
exposure
was
systematically
investigated
explore
influences
on
denitrification
performance
dynamic
microbial
responses.
Results
showed
that
low-concentration
(<15
mg/L)
caused
severe
nitrite
accumulation
initially,
while
higher
concentrations
(35-60
had
no
further
effect
after
acclimation.
mechanistic
study
demonstrated
reduced
reductase
(NIR)
activity
inhibited
metabolic
(carbon
metabolism
nitrogen
metabolism)
by
causing
oxidative
stress
membrane
damage,
resulting
in
accumulation.
more
than
80
days
acclimation,
almost
found
at
60
mg/L
CLP.
It
proposed
secretion
extracellular
polymeric
substances
(EPS)
increased
from
75.03
mg/g
VSS
15
109.97
CLP,
which
strengthened
protection
cells
improved
NIR
activities.
Additionally,
biodiversity
richness
community
experienced
U-shaped
process.
relative
abundance
denitrification-
carbon
metabolism-associated
microorganisms
decreased
initially
then
recovered
with
enrichment
related
EPS
N-acyl-homoserine
lactones
(AHLs).
These
protected
microbe
toxic
regulated
their
interactions
among
inter-
intra-species.
This
revealed
successive
provided
proper
guidance
for
analyzing
treating
herbicide-containing
wastewater.
