Environmental Concentrations of Herbicide Prometryn Render Stress-Tolerant Corals Susceptible to Ocean Warming
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(10), С. 4545 - 4557
Опубликована: Фев. 22, 2024
Global
warming
has
caused
the
degradation
of
coral
reefs
around
world.
While
stress-tolerant
corals
have
demonstrated
ability
to
acclimatize
ocean
warming,
it
remains
unclear
whether
they
can
sustain
their
thermal
resilience
when
superimposed
with
other
coastal
environmental
stressors.
We
report
combined
impacts
a
photosystem
II
(PSII)
herbicide,
prometryn,
and
on
Galaxea
fascicularis
through
physiological
omics
analyses.
The
results
demonstrate
that
heat-stress-induced
inhibition
photosynthetic
efficiency
in
G.
is
exacerbated
presence
prometryn.
Transcriptomics
metabolomics
analyses
indicate
prometryn
exposure
may
overwhelm
repair
mechanism
corals,
thereby
compromising
capacity
for
acclimation.
Moreover,
might
amplify
adverse
effects
heat
stress
key
energy
nutrient
metabolism
pathways
induce
stronger
response
oxidative
corals.
findings
at
environmentally
relevant
concentrations
would
render
more
susceptible
exacerbate
breakdown
Symbiodiniaceae
symbiosis.
present
study
provides
valuable
insights
into
necessity
prioritizing
PSII
herbicide
pollution
reduction
reef
protection
efforts
while
mitigating
climate
change.
Язык: Английский
Nitrogen source type modulates heat stress response in coral symbiont ( Cladocopium goreaui )
Applied and Environmental Microbiology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
ABSTRACT
Ocean
warming
due
to
climate
change
endangers
coral
reefs,
and
regional
nitrogen
overloading
exacerbates
the
vulnerability
of
reef-building
corals
as
dual
stress
disrupts
coral–Symbiodiniaceae
mutualism.
Different
forms
may
create
different
interactive
effects
with
thermal
stress,
but
underlying
mechanisms
remain
elusive.
To
address
gap,
we
measured
compared
physiological
transcriptional
responses
Symbiodiniaceae
Cladocopium
goreaui
heat
(31°C)
when
supplied
types
(nitrate,
ammonium,
or
urea).
Under
(HS),
cell
proliferation
photosynthesis
C.
declined,
while
size,
lipid
storage,
total
antioxidant
capacity
increased,
both
varied
extents
depending
on
type.
Nitrate-cultured
cells
exhibited
most
robust
acclimation
HS,
evidenced
by
fewest
differentially
expressed
genes
(DEGs)
less
ROS
accumulation,
possibly
activated
nitrate
reduction
enhanced
ascorbate
biogenesis.
Ammonium-grown
cultures
higher
algal
scavenging
carotenoid
quenching,
potentially
reduced
host
recognizability
downregulation
N-glycan
biosynthesis
genes.
Urea
utilization
led
greatest
accumulation
involved
in
photorespiration,
plant
respiratory
burst
oxidase
(RBOH),
protein
refolding
were
markedly
upregulated,
cutdown
photosynthate
available
photoinhibition
selfish
indicating
detrimental
urea
overloading.
The
differential
nitrogen-type
documented
here
has
significant
implication
mutualism,
which
requires
further
research.
IMPORTANCE
Regional
pollution
globally
rising
sea-surface
temperature,
exerting
effects.
How
this
occurs
is
poorly
understood
understudied.
This
study
explored
mechanism
comparing
a
symbiont
under
supplies
results
showed
some
common,
well
unique,
N-source
dependent
responses.
These
findings
underscore
that
eutrophication
not
all
same,
form
should
be
considered
conservation,
special
attention
given
pollution.
Язык: Английский
The Southwestern Atlantic coral Mussismilia hispida exhibit remarkable tolerance to nitrate enrichment
Coral Reefs,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Язык: Английский
Phosphorus addition mitigates the combined negative effects of high temperature and nitrogen stress on corals
Marine Environmental Research,
Год журнала:
2025,
Номер
207, С. 107075 - 107075
Опубликована: Март 7, 2025
Язык: Английский
Nitrate enrichment exacerbates microbiome and metabolism disturbances of the coral holobiont under heat stress
Marine Environmental Research,
Год журнала:
2025,
Номер
unknown, С. 107098 - 107098
Опубликована: Март 1, 2025
Язык: Английский
Physiological acclimation of Porites panamensis (Scleractinia: Poritidae) under high-latitude marginal conditions
Ciencias Marinas,
Год журнала:
2025,
Номер
50(1B)
Опубликована: Апрель 11, 2025
Hermatypic
corals
living
at
high
latitudes
face
suboptimal
environmental
conditions
associated
with
seasonal
changes.
In
the
central
Gulf
of
California,
coral
Porites
panamensis
is
acclimated
to
eutrophication,
low
light
availability,
and
a
wide
range
fluctuations
in
sea
surface
temperature
(SST).
The
physiological
adjustments
its
resistance
thresholds
are
phenotypic
plasticity.
This
study
evaluated
interannual
acclimation
responses
P.
warm
cold
seasons
2022
2023
using
markers
endosymbiont
density,
chlorophyll
(Chl
a)
concentration,
total
lipid
content
tissue.
addition,
abiotic
variables
SST,
Chl
a,
particulate
organic
carbon
(POC),
diffuse
attenuation
coefficient
(Kd490)
were
compared
between
seasons.
results
indicated
significant
difference
density
(cold
season:
~4
×
106
cell·cm–2;
~2
cell·cm–2),
an
increase
concentration
during
season
2023.
We
also
observed
However,
changes
did
not
negatively
affect
content,
likely
due
concentrations
POC
throughout
year
(2022:
4.47
±
1.75
mg·m–3;
2023:
403.3
132.2
mg·m–3),
suggesting
existence
potential
year-round
food
source
for
panamensis.
Our
indicate
that
acclimates
turbidity.
suggest
regulating
mixotrophy
could
be
key
nutritional
strategy
withstand
fluctuating
conditions.
ability
alternate
different
pathways
according
may
allow
distribute
Eastern
Tropical
Pacific,
even
inhabiting
regions
reef
development.
Язык: Английский
Individual and combined effects of herbicide prometryn and nitrate enrichment at environmentally relevant concentrations on photosynthesis, oxidative stress, and endosymbiont community diversity of coral Acropora hyacinthus
Chemosphere,
Год журнала:
2023,
Номер
339, С. 139729 - 139729
Опубликована: Авг. 3, 2023
Язык: Английский
Long-term exposure to climbazole may affect the health of stress-tolerant coral Galaxea fascicularis
Marine Environmental Research,
Год журнала:
2024,
Номер
201, С. 106679 - 106679
Опубликована: Авг. 10, 2024
Язык: Английский
The growth and nitrogen utilization strategies in two dominant Symbiodiniaceae species facing nitrogen deficiency and enrichment
Algal Research,
Год журнала:
2024,
Номер
unknown, С. 103772 - 103772
Опубликована: Окт. 1, 2024
Язык: Английский
Understanding nitrogen dynamics in coral holobionts: comprehensive review of processes, advancements, gaps, and future directions
Frontiers in Marine Science,
Год журнала:
2023,
Номер
10
Опубликована: Май 26, 2023
Coral
reefs
are
known
for
being
highly
productive
ecosystems
in
oligotrophic
oceans,
which
is
commonly
referred
to
as
the
Darwin’s
Paradox.
Nitrogen
an
essential
component
of
organisms,
but
it
limits
primary
productivity
most
euphotic
ocean,
including
coral
reef
system.
Therefore,
understanding
nitrogen’s
transfer
and
transformation
within
holobiont
comprehend
homeostasis
functioning
mechanisms,
may
help
explain
Previous
studies
have
pointed
out
fundamental
importance
nitrogen
cycling
between
host
symbiotic
algae.
Recently,
increasing
researches,
particularly
quantitative
aspect,
significantly
improved
our
understandings
various
roles
pathways
regulating
inter-relationship
among
algae
associated
microbiome.
In
this
paper,
we
synthesized
knowledge
advances
different
processes
holobionts
standing
on
cycle
perspective.
We
extracted
consensus
contradictions
from
published
research
results
regarding
flows
holobiont.
This
review
presented
temporal
spatial
variation
fixation
analyzed
global
rates
holobionts.
also
summarized
projections
specific
facing
climate
change
limited
reports.
realized
that
there
significant
gaps
holobionts,
hindering
comprehension
balance
and,
therefore,
systems.
These
include
relative
nitrification,
denitrification,
DNRA
well
self-regulation
mechanisms
maintain
nitrogen-homeostasis
short-term
long-term,
context
environmental
changes.
At
end,
provide
opinions
methods
future.
Язык: Английский