IOP Conference Series Earth and Environmental Science,
Journal Year:
2023,
Volume and Issue:
1215(1), P. 012017 - 012017
Published: July 1, 2023
Abstract
Inhibitory
impact
of
Artemisia
herba-alba
extract
on
Klisinema
persicum
growth
was
investigated.
This
study
looked
at
the
effects
different
concentrations
A.
extracts
and
antioxidant
enzyme
(superoxide
dismutase
Catalase)
activity
K.
in
order
to
determine
optimal
dose
range
for
good
anti-algal
action.
Concentrations
were
used
(2.5,5,
10,
20,
40,80
160)
mg.
L
-1
as
well
control.
Results
showed
that
both
crude
extracted,
alcoholic
extract,
aqueous
had
an
obvious
inhibitory
effect
growth,
such
obtained
results
demonstrated
extracted
inhibited
algal
more
efficiently
than
.
investigation
found
a
10
with
above
50%
IR
crude,
extractand
best,
based
changes
cell
density
ratio
(IR).
Additionally,
after
4
days,
group
saw
significant
decline
Chlorophyll-a
concentration
enzymes
activity,
falling
below
detection
threshold.
Our
findings
may
pave
way
further
into
mechanisms
underlying
dangerous
algae,
which
turn
could
lead
creation
novel
materials.
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
291, P. 117889 - 117889
Published: Feb. 1, 2025
The
hormesis
effect
has
gradually
become
a
research
focus
in
environmental
science
and
toxicology
due
to
its
unique
phenomenon
of
low-concentration
stimulation
high-concentration
inhibition.
combined
toxicity
antibiotics
their
regulatory
effects
on
microorganisms
are
areas
that
warrant
significant
attention.
In
this
study,
doxycycline
hydrochloride
(DXC),
sulfamethoxazole
(SMX)
sulfamethazine
(SMZ)
were
used
as
the
objects,
Scenedesmus
obliquus
was
indicator
organism
study
action
laws
at
different
exposure
times
(4d
8d).
toxic
antibiotic
mixtures
with
comprehensively
evaluated
from
aspects
growth
inhibition,
photosynthesis
index
antioxidant
enzyme
activity.
results
showed
11
rays
produced
effect,
value
8th
day
greater
than
4th
day.
Through
prediction
toxicity,
it
found
type
intensity
affected
by
mixture
composition,
time
concentration.
Hormesis
is
caused
regulation
photosynthesis,
activation
defense
system,
gene
expression,
change
cell
membrane
permeability.
This
provides
theoretical
basis
for
understanding
effect.
Frontiers in Bioscience-Landmark,
Journal Year:
2023,
Volume and Issue:
28(10)
Published: Oct. 25, 2023
Background:
The
intensive
and
injudicious
use
of
pesticides
in
agriculture
has
emerged
as
a
major
concern
due
to
its
detrimental
impact
on
aquatic
ecosystems.
However,
the
specific
broad-spectrum
fungicides,
such
Thiophanate-methyl
(TM),
cyanobacteria
remains
subject
ongoing
research
debate.
Methods:
In
order
fill
this
knowledge
gap,
present
study
aimed
comprehensively
investigate
toxicological
effects
TM
(10–30
µg/L)
growth,
photosynthetic
pigments,
oxidative
stress,
biochemical
composition
non-nitrogen-fixing
cyanobacterium
Arthrospira
platensis.
Results:
Our
findings
unequivocally
demonstrated
that
exposure
significantly
inhibited
growth
A.
Moreover,
decrease
chlorophyll
content
indicated
pronounced
negative
system
platensis
caused
by
exposure.
Notably,
induced
stress
platensis,
substantiated
significant
increase
lipid
peroxidation
(MDA)
within
culture.
Furthermore,
intracellular
generation
hydrogen
peroxide
(H2O2)
exhibited
positive
correlation
with
higher
dosages,
while
levels
vital
antioxidant
enzymes,
catalase
(CAT)
ascorbate
peroxidase
(APX),
discernible
decrease.
This
suggests
compromises
defense
mechanisms
Additionally,
was
found
enhance
activity
plethora
enzymes
involved
detoxification
pesticides,
including
(POD)
glutathione-S-transferase
(GST),
thereby
indicating
robust
response
Interestingly,
resulted
general
suppression
biocomponent
production,
total
proteins
carbohydrates,
which
diminishing
trend
increasing
concentration.
Conversely,
witnessed
increase,
possibly
an
adaptive
TM-induced
stress.
Conclusions:
These
contribute
deeper
understanding
ecological
implications
pesticide
usage
emphasize
urgent
need
for
adoption
sustainable
environmentally-friendly
agricultural
practices
safeguard
