Journal of Cleaner Production,
Год журнала:
2022,
Номер
383, С. 135408 - 135408
Опубликована: Ноя. 30, 2022
Global
warming
and
eutrophication
accelerated
Microcystis
blooms,
causing
water
quality
deterioration.
Cyanocides
produced
by
cyanobactericidal
bacteria
have
attracted
substantial
attention
for
controlling
blooms
owing
to
their
environmental
friendliness.
However,
application
is
still
in
the
early
stages,
highlighting
need
discovery
of
novel
cyanocides.
Herein,
we
isolated
purified
a
macrocyclic
tambjamine
Paucibacter
aquatile
DH15,
named
paucibactin
A.
The
cyanocidal
activity
A
(1
μg/mL)
against
(106
cells/mL)
was
81.6%
after
24
h
exposure.
Paucibactin
killed
destroying
its
structural
integrity,
photosynthetic
antioxidant
systems,
macromolecules.
expression
key
genes
involved
these
fundamental
processes
downregulated
treatment.
In
microcosm
study,
exhibited
selective
Dolichospermum
but
not
other
cyanobacteria.
87.4%
degraded
photolysis
h.
Cyanobactericidal
promoted
growth
eukaryotic
microalgae,
possibly
altering
competitive
relationship
inducing
changes
bacterial
community
interaction
network.
Collectively,
our
findings
suggest
that
could
be
an
effective
compound
blooms.
Harmful Algae,
Год журнала:
2024,
Номер
133, С. 102599 - 102599
Опубликована: Фев. 9, 2024
Cyanobacterial
blooms
present
substantial
challenges
to
managers
and
threaten
ecological
public
health.
Although
the
majority
of
cyanobacterial
bloom
research
management
focuses
on
factors
that
control
initiation,
duration,
toxicity,
geographical
extent,
relatively
little
role
loss
processes
in
how
these
are
regulated.
Here,
we
define
a
process
terms
population
dynamics
as
any
removes
cells
from
population,
thereby
decelerating
or
reducing
development
extent
blooms.
We
review
abiotic
(e.g.,
hydraulic
flushing
oxidative
stress/UV
light)
biotic
allelopathic
compounds,
infections,
grazing,
resting
cells/programmed
cell
death)
known
govern
loss.
found
dominant
depend
several
system
specific
including
genera-specific
traits,
situ
physicochemical
conditions,
microbial,
phytoplankton,
consumer
community
composition.
also
address
context
discuss
perspectives
predicting
changing
climate
may
directly
indirectly
affect
A
deeper
understanding
their
underlying
mechanisms
help
mitigate
negative
consequences
improve
current
strategies.
Environmental Microbiology Reports,
Год журнала:
2023,
Номер
15(6), С. 783 - 796
Опубликована: Сен. 11, 2023
Abstract
The
transfer
of
toxic
cyanobacterial
Microcystis
blooms
from
freshwater
to
estuaries
constitutes
a
serious
environmental
problem
worldwide
that
is
expected
expand
in
scale
and
intensity
with
anthropogenic
climate
change.
formation
maintenance
colonial
form
conditioned
the
presence
extracellular
polymeric
substances
(EPS).
In
this
study,
we
attempted
better
understand
how
mucilaginous
evolves
under
stress
conditions.
particular,
studied
compared
production
composition
EPS
fractions
(attached
free)
natural
colonies
bloom
unicellular
M.
aeruginosa
strain
salinity
nutrient
(representing
land‐sea
continuum).
Our
results
highlighted
greater
than
one
combined
conditions
dominated
by
attached
form.
comparison
,
produced
were
characterized
high
molecular
weight
polysaccharides
which
enriched
uronic
acids
hexosamines,
notably
for
free
fraction
response
increased
salinities.
This
complex
matrix
gives
cells
ability
aggregate
allows
population
cope
osmotic
shock.
Water Research,
Год журнала:
2024,
Номер
255, С. 121497 - 121497
Опубликована: Март 19, 2024
Microcystins
(MCs)
constitute
a
significant
threat
to
human
and
environmental
health,
urging
the
development
of
effective
removal
methods
for
these
toxins.
In
this
review,
we
explore
potential
MC-degrading
bacteria
as
solution
MCs
from
water.
The
review
insights
into
mechanisms
action
employed
by
bacteria,
elucidating
their
ability
degrade
thus
remove
MCs.
After,
points
out
influence
structural
conformation
on
removal,
particularly
stability
at
different
water
depths
within
bodies.
Then,
crucial
role
played
production
in
ensuring
survival
safeguarding
enzymatic
activities
Microcystis
cells.
This
justifies
need
developing
sustainable
removing
aquatic
ecosystems,
given
critical
ecological
function
toxicity
humans
animals.
Thereafter,
challenges
limitations
associated
with
using
treatment
are
discussed,
emphasizing
further
research
optimize
selection
bacterial
strains
used
biodegradation.
interaction
MCs-degrading
sediment
particles
is
also
toxin
its
efficiency.
By
presenting
information,
valuable
resource
researchers,
policymakers,
stakeholders
involved
practical
approaches
Our
highlights
various
applications
including
multi-soil-layering
(MSL)
technologies.
It
emphasizes
ongoing
utilization
treatment,
ultimately
safety
quality
sources.
Moreover,
value
bibliometric
analyses
revealing
gaps
trends,
providing
detailed
investigations.
Specifically,
discuss
importance
employing
advanced
genomics,
especially
combining
OMICS
identify
bacteria.
