bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
While
the
bloom-forming
cyanobacterium
Microcystis
can
exist
as
free-living
single
cells
or
within
dense
mucilaginous
colonies,
drivers
and
consequences
of
colony
formation
remain
unclear.
Here,
we
integrated
metatranscriptomic
datasets
from
two
bloom
events
in
Lake
Taihu,
China,
to
analyze
validate
functional
differences
between
colonial
single-cell
.
Our
results
confirmed
expression
profiles
were
disproportionately
enriched
transcripts
(and
functions)
compared
other
prokaryotic
taxa.
Concomitantly,
viral
infection
strategies
diverged
by
community
morphology:
colony-associated
expressed
lysogeny-associated
genes,
while
exhibited
increased
signatures
lytic
infection.
These
data
are
consistent
with
hypothesis
that
colonies
foster
conditions
favorable
lysogen
formation-likely
due
local
high
cell
densities
resulting
advantage
superinfection
immunity-whereas
solitary
experience
stronger
pressure.
On
a
broader
scale,
our
findings
refine
understanding
dynamics
identifying
how
morphological
states
coincide
distinct
host-virus
interactions.
Cumulatively,
this
work
underscores
importance
shaping
ecology
highlights
need
for
mechanistic
studies
disentangle
interplay
phage
modes,
formation,
microbial
structure.
Frontiers in Microbiology,
Год журнала:
2023,
Номер
14
Опубликована: Дек. 5, 2023
Microcystis
possesses
the
capacity
to
form
colonies
and
blooms
in
lakes
reservoirs
worldwide,
causing
significant
ecological
challenges
aquatic
ecosystems.
However,
little
is
known
about
determining
factors
of
physico-chemical
surface
properties
that
govern
competitive
advantage
Microcystis.
Here,
The
wesenbergii
aeruginosa,
including
specific
area
(SSA),
hydrophobicity,
zeta
potential,
functional
groups
were
investigated.
Additionally,
extracellular
polysaccharide
(EPS)
analyzed.
Laboratory-cultured
exhibited
hydrophilic,
a
negative
potential
negatively
charged.
Furthermore,
no
relationship
was
shown
between
these
cultivation
stage.
low
free
energy
cohesion,
high
energy,
growth
rate,
EPS
content
during
logarithmic
phase.
On
other
hand,
M.
aeruginosa
displayed
lower
content,
rate
stationary
These
characteristics
contribute
their
respective
advantage.
component
primarily
influenced
SSA
total
Likewise,
protein
hydrophobicity
tension.
composition,
glucuronic
acid,
xylose,
fructose,
mainly
properties.
hydrophilic
such
as
O-H
P-O-P
played
crucial
role
This
study
elucidates
SSA,
cells,
which
turn
impact
formation
collection.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
274, С. 116198 - 116198
Опубликована: Март 11, 2024
2-methylisoborneol
(2-MIB),
a
secondary
metabolite
produced
by
cyanobacteria,
often
causes
musty
odour
in
water,
threatening
the
safety
of
drinking
water
supplies.
This
study
investigated
effects
growth
phases
on
production
2-MIB
Pseudanabaena.
The
cell
characteristics
and
release
were
also
explored.
total
concentration
increased
during
exponential
phase
decreased
declining
phase,
which
was
consistent
with
changes
density.
However,
yield
(1.12-1.27
fg
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
While
the
bloom-forming
cyanobacterium
Microcystis
can
exist
as
free-living
single
cells
or
within
dense
mucilaginous
colonies,
drivers
and
consequences
of
colony
formation
remain
unclear.
Here,
we
integrated
metatranscriptomic
datasets
from
two
bloom
events
in
Lake
Taihu,
China,
to
analyze
validate
functional
differences
between
colonial
single-cell
.
Our
results
confirmed
expression
profiles
were
disproportionately
enriched
transcripts
(and
functions)
compared
other
prokaryotic
taxa.
Concomitantly,
viral
infection
strategies
diverged
by
community
morphology:
colony-associated
expressed
lysogeny-associated
genes,
while
exhibited
increased
signatures
lytic
infection.
These
data
are
consistent
with
hypothesis
that
colonies
foster
conditions
favorable
lysogen
formation-likely
due
local
high
cell
densities
resulting
advantage
superinfection
immunity-whereas
solitary
experience
stronger
pressure.
On
a
broader
scale,
our
findings
refine
understanding
dynamics
identifying
how
morphological
states
coincide
distinct
host-virus
interactions.
Cumulatively,
this
work
underscores
importance
shaping
ecology
highlights
need
for
mechanistic
studies
disentangle
interplay
phage
modes,
formation,
microbial
structure.
