Plants,
Год журнала:
2024,
Номер
13(23), С. 3354 - 3354
Опубликована: Ноя. 29, 2024
Stress
modifiers
are
recognized
as
biostimulants
providing
beneficial
effects
on
various
plant
species.
However,
the
specific
potential
of
modulators
such
melatonin,
chitosan,
humic
acid,
and
selenium
in
enhancing
resistance
ajwain
(Carum
copticum
L.)
plants
to
water
scarcity
remains
an
open
question.
To
address
this
knowledge
gap,
we
conducted
a
randomized,
field
block-designed
factorial
experiment
over
two
years
(2022–2023)
compare
effectiveness
these
mitigating
impact
shortage
plants.
This
study
involved
three
irrigation
regimes:
100%
capacity
(FC100%—unstressed),
75%
deficit
(FC75%—moderate)
50%
(FC50%—severe),
four
modifier
treatments
(melatonin,
selenium),
plus
untreated
controls.
Plant
growth,
seed
yields,
essential
oil
production,
well
eco-physiological
traits
were
studied
assess
efficacy
compounds
stress
modulators.
Water
regimes
applications,
single
factor
or
synergy,
significantly
affected
physiology
yield,
highlighting
importance
sustainability
agricultural
practices.
Compared
FC100%,
biological
chlorophyll,
nutrient
content
decreased
under
FC75%
FC50%,
while
proline,
soluble
sugars,
flavonoids,
phenols
antioxidant
enzymatic
activity
increased.
Notably,
regardless
type
modulator
used,
application
improved
all
physiological
attributes
moderate
severe
deficits.
Among
compounds,
melatonin
induced
most
pronounced
effects,
leading
higher
fixed
relative
leaf
content,
chlorophyll
concentration,
activity.
Our
results
demonstrate
that
effectively
function
against
by
preserving
promoting
saving.
These
findings
provide
valuable
insights
into
their
use
nature-based
solution
for
addressing
sustainable
agriculture
climate
change
challenges.
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(20), С. 15426 - 15426
Опубликована: Окт. 21, 2023
In
this
research,
a
HPLC
analysis,
along
with
transcriptomics
tools,
was
applied
to
evaluate
chitosan
and
water
stress
for
the
prediction
of
phenolic
flavonoids
patterns
terpenoid
components
accumulation
in
Salvia
abrotanoides
Karel
S.
yangii.
The
results
indicated
that
tanshinone
contents
under
drought
conditions
increased
4.2-fold
increasing
intensity
both
species.
rosmarinic
acid
content
leaves
varied
from
0.038
11.43
mg/g
DW.
addition,
flavonoid
(1.8
1.4-fold)
mild
deficit
moderate
concentration
(100
mg
L-1).
application
foliar
at
100
200
L-1
well-watered
led
increases
hydroxyl
cryptotanshinone
(OH-CT)
(CT)
as
major
expressions
studied
genes
(DXS2,
HMGR,
KSL,
4CL,
TAT)
were
also
noticeably
induced
by
variably
modulated
treatment
chitosan.
According
our
findings,
altered
expression
levels
certain
genes.
Specifically,
we
observed
changes
DXS
which
are
upstream
MEP
MVA
pathways,
respectively.
Additionally,
level
downstream
gene
involved
diterpenoid
synthesis,
affected.
Finally,
present
investigation
confirmed
treatments
affected
methylerythritol
phosphate
pathway
(MEP)
mevalonate
(MVA)
but
their
commitment
production
other
isoprenoids
has
be
considered
discussed.
Scientia Horticulturae,
Год журнала:
2024,
Номер
328, С. 112913 - 112913
Опубликована: Янв. 23, 2024
Artemisinin
is
a
sesquiterpene
lactone
endoperoxide,
recognized
for
its
application
as
treatment
malaria.
Besides,
it
has
activity
against
several
types
of
cancers,
well
anti-viral
and
anti-inflammatory
properties.
The
chemical
synthesis
artemisinin
quite
complex
economically
unfeasible.
Hence,
typically
obtained
from
Artemisia
annua
plants
in
low
quantities
relation
to
the
biomass.
A
strategy
increase
biosynthesis
secondary
metabolites
would
be
elicitors.
In
this
work,
effect
treating
A.
with
menadione
sodium
bisulphite
(MSB)
studied.
An
initial
dose-optimization
was
conducted
by
different
MBS
concentrations
(0,
0.2,
0.8,
1,
2,
3
4
mM)
quantified
48
h
after
treatment.
highest
content
(3.71
mg
g−1
DW)
1
mM
MSB.
Then,
harvesting
time
optimised
(24,
72
application)
largest
observed
at
an
increment
62.37
%
over
control.
increased
H2O2
content,
superoxide
dismutase
(SOD)
ascorbate
peroxidase
(APX).
MSB
up-regulated
HMGR
(the
gene
3-hydroxy-3-methylglutaryl-CoA
reductase)
DXS
1-deoxy-D-xylulose-5-phosphate
synthase)
24
Both
genes
are
involved
MVA
(mevalonate)
MEP
(2C-methylerythritol
4-phosphate)
pathways,
respectively.
These
pathways
represent
initiation
biosynthesis.
Thus,
consequent
up-regulation
early
biosynthetic
pathway
along
triggered
oxidative
stress
may
have
been
contributed
production.
