Colony
formation
is
essential
for
cyanobacterial
blooms
in
aquatic
environment.
As
the
most
widespread
organism
water
bodies,
role
of
microorganisms
on
colonies
still
unclear.
This
study
reported
that
could
promote
aggregation
behavior
Microcystis
cells
two
ways:
first,
through
accumulation
biomass,
and
second,
by
causing
to
aggregate
not
separate.
The
alleviated
environmental
stress
promoted
growth
cells.
algal
aggregated
secreted
more
extracellular
polymers
ecological
advantages.
concentration
calcium
solution
was
reduced
microorganism,
facilitating
presence
additional
ions
acted
as
connecting
nodes
various
functional
groups.
In
addition,
secretion
microvirin
enhance
neighboring
These
findings
can
understanding
relationship
between
cyanobacteria
other
achieve
deeper
explanations
colony
mechanism
environment,
thus
improving
theory
formation.
Annual Review of Environment and Resources,
Journal Year:
2023,
Volume and Issue:
48(1), P. 123 - 147
Published: Sept. 8, 2023
Harmful
cyanobacterial
blooms
(CyanoHABs)
impact
lakes,
estuaries,
and
freshwater
reservoirs
worldwide.
The
duration,
severity,
spread
of
CyanoHABs
have
markedly
increased
over
the
past
decades
will
likely
continue
to
increase.
This
article
addresses
universal
phenomena
occurring
in
many
ecosystems
Based
on
analysis
ecophysiological
traits
bloom-forming
cyanobacteria
their
interactions
with
environmental
processes,
we
summarize
decipher
driving
forces
leading
initiation,
outbreak,
persistence
blooms.
Due
coupling
effects
eutrophication,
rising
CO
2
levels
global
warming,
a
multidisciplinary
joint
research
approach
is
critical
for
better
understanding
CyanoHAB
phenomenon
its
prediction,
remediation,
prevention.
There
an
urgent
need
evaluate
guide
proper
use
bloom
control
techniques
at
large
scales,
using
science-based
environmentally
friendly
approaches.
Global Change Biology,
Journal Year:
2023,
Volume and Issue:
29(17), P. 5044 - 5061
Published: July 10, 2023
Microbes
play
an
important
role
in
aquatic
carbon
cycling
but
we
have
a
limited
understanding
of
their
functional
responses
to
changes
temperature
across
large
geographic
areas.
Here,
explored
how
microbial
communities
utilized
different
substrates
and
the
underlying
ecological
mechanisms
along
space-for-time
substitution
gradient
future
climate
change.
The
included
47
lakes
from
five
major
lake
regions
China
spanning
difference
nearly
15°C
mean
annual
temperatures
(MAT).
Our
results
indicated
that
warmer
generally
had
lower
values
variables
related
concentrations
greater
utilization
than
those
colder
regions.
under
higher
could
be
attributed
bacterial
community
composition,
with
abundance
Cyanobacteria
Actinobacteriota
less
Proteobacteria
We
also
found
core
species
networks
changed
increasing
temperature,
Hydrogenophaga
Rhodobacteraceae,
which
inhibited
amino
acids
carbohydrates,
CL500-29-marine-group,
promoted
all
almost
substrates.
Overall,
our
findings
suggest
can
mediate
by
changing
interactions
between
bacteria
individual
substrates,
discovery
affect
provides
insight
into
potential
sequestration
within
inland
water
bodies
warming.
Microbiome,
Journal Year:
2024,
Volume and Issue:
12(1)
Published: May 13, 2024
Abstract
Background
During
the
bloom
season,
colonial
cyanobacterium
Microcystis
forms
complex
aggregates
which
include
a
diverse
microbiome
within
an
exopolymer
matrix.
Early
research
postulated
simple
mutualism
existing
with
bacteria
benefitting
from
rich
source
of
fixed
carbon
and
receiving
recycled
nutrients.
Researchers
have
since
hypothesized
that
represent
community
synergistic
interacting
species,
interactome,
each
unique
metabolic
capabilities
are
critical
to
growth,
maintenance,
demise
blooms.
Research
has
also
shown
aggregate-associated
taxonomically
different
free-living
in
surrounding
water.
Moreover,
identified
little
overlap
functional
potential
between
members
its
microbiome,
further
supporting
interactome
concept.
However,
we
still
lack
verification
general
interaction
know
about
taxa
pathways
nutrient
metabolite
cycling
aggregates.
Results
7-month
study
bacterial
communities
comparing
Lake
Taihu,
China,
found
aerobic
anoxygenic
phototrophic
(AAP)
were
significantly
more
abundant
than
samples,
suggesting
possible
role
for
AAP
overall
aggregate
function.
We
then
analyzed
gene
composition
102
high-quality
metagenome-assembled
genomes
(MAGs)
bloom-microbiome
10
lakes
spanning
four
continents,
compared
12
complete
revealed
possessed
complementary
biochemical
could
serve
C,
N,
S,
P
cycling.
Mapping
published
transcripts
blooms
onto
comprehensive
non-AAP
MAG
database
(226
MAGs)
indicated
observed
high
levels
expression
genes
involved
bacteria.
Conclusions
Our
results
provide
strong
corroboration
first
evidence
may
play
important
microbiomes.
