The
effects
of
environmental
elements
interfere
directly
and
indirectly
in
the
estimation
transpiration.An
condition
significant
magnitude
is
saline
environments,
which
generate
abiotic
stress
that
limits
plant
production.This
study
aimed
to
determine
direct
indirect
interactions
variables
have
on
crop
transpiration,
stomatal
conductance
photosynthesis
young
African
mahogany
plants
under
salinity
conditions
a
semi-arid
region.The
was
conducted
drainage
lysimeters,
with
(Khaya
senegalensis)
plants,
using
water
an
electrical
conductivity
0,5
dS.m
-1
;
1,25
2
2,75
3,5
4,25
e
5
-
1
total
seven
treatments,
three
replications
21
experimental
units
(plants),
order
promote
optimization
use
resources
influencing
ecophysiological
behavior
are
characterized
by
global
radiation
(Rg),
photosynthetically
active
(Qleaf),
atmospheric
vapor
pressure
deficit
(DPV)
potential,
were
obtained
season
meteorological
data
from
INPE
present
area.The
experiment
during
first
four
months
development,
period
considered
installation
northeast
region
country
(Bahia),
field
at
State
University
Southwest
Bahia
(UESB),
campus
Vitória
da
Conquista,
collection
consecutive
months:
January,
February
March
2022.The
assessments
transpiration
(E),
(Gs)
(A)
carried
out
aid
diffusion
porometer.steady
state,
model
LCPro-SD.Monitoring
irrigation
outwith
portable
meter
adding
sodium
chloride
(NaCl)
water,
maintained
0.5
,
for
each
units.
.The
regression
analysis
between
(global
potential),
independent
variables,
(transpiration
photosynthesis),
dependent
used
mathematically
modulate
depending
explanatory
variables.With
generated
experiment,
as
variable,
perfect
function
radiation.The
value
level
tested
lower
higher
water.It
also
observed
restriction
resulted
decrease
potential
plants.Solar
played
important
role
regulating
plants.Water
had
similar
stress,
resulting
reduced
availability,
atrophy
conducting
vessels,
nutrient
absorption
decreased
growth
production.
International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(7), С. 6134 - 6134
Опубликована: Март 24, 2023
Melatonin
is
among
one
of
the
promising
agents
able
to
protect
agricultural
plants
from
adverse
action
different
stressors,
including
salinity.
We
aimed
investigate
effects
melatonin
priming
(0.1,
1.0
and
10
µM)
on
salt-stressed
potato
(125
mM
NaCl),
by
studying
growth
parameters,
photochemical
activity
photosystem
II,
water
status,
ion
content
antioxidant
system
activity.
as
a
pleiotropic
signaling
molecule
was
found
decrease
negative
effect
salt
stress
stolon
formation,
tissue
status
without
significant
expression
Na+/H+-antiporter
genes
localized
vacuolar
(NHX1
NHX3)
plasma
membrane
(SOS1).
effectively
decreases
accumulation
lipid
peroxidation
products
in
leaves
whole
range
concentrations
studied.
A
melatonin-induced
dose-dependent
increase
Fv/Fm
together
with
uncontrolled
non-photochemical
dissipation
Y(NO)
also
indicates
decreased
oxidative
damage.
The
observed
protective
ability
unlikely
due
its
influence
enzymes,
since
neither
SOD
nor
peroxidase
were
activated
melatonin.
exerted
positive
water-soluble
low-molecular-weight
antioxidants,
proline
flavonoids,
which
could
aid
decreasing
stress.
most
consistent
carotenoids,
are
well-known
lipophilic
antioxidants
playing
an
important
role
protection
photosynthesis
Finally,
it
possible
that
accumulated
during
pretreatment
exert
direct
antioxidative
ROS
scavenging
molecules.
Plants,
Год журнала:
2024,
Номер
13(17), С. 2527 - 2527
Опубликована: Сен. 8, 2024
Salt
stress
can
affect
various
physiological
processes
in
plants,
ultimately
hindering
their
growth
and
development.
Melatonin
(MT)
effectively
resist
multiple
abiotic
stresses,
improving
plant
resistance.
To
analyze
the
mechanism
of
exogenous
MT
to
enhance
salt
tolerance
red
clover,
we
conducted
a
comprehensive
study
examine
influence
on
parameters,
including
seed
germination
indices,
seedling
morphological
traits,
photosynthetic
indicators,
using
four
distinct
clover
varieties
(H1,
H2,
H3,
H4).
This
investigation
was
performed
under
conditions
with
differing
pH
values,
specifically
utilizing
NaCl,
Na2SO4,
NaHCO3,
Na2CO3
as
stressors.
The
results
showed
that
solution
immersion
significantly
improved
indicators
seeds
stress.
foliar
spraying
50
μM
25
increased
SOD
activity
(21–127%),
POD
activity,
soluble
sugar
content,
proline
content
(22–117%),
chlorophyll
(2–66%),
net
rate.
It
reduced
MDA
(14–55%)
intercellular
CO2
concentration
seedlings
Gray
correlation
analysis
Mantel
test
further
verified
is
key
factor
enhancing
stress;
most
significant
improvement
observed
for
NaHCO3
demonstrated
improve
through
variety
mechanisms,
an
increase
antioxidant
enzyme
osmoregulation
ability,
cell
membrane
stability.
Additionally,
it
improves
efficiency
architecture,
promoting
energy
production,
growth,
optimal
resource
allocation.
These
mechanisms
function
synergistically,
enabling
sustain
normal
development
