Arctic Antarctic and Alpine Research,
Journal Year:
2024,
Volume and Issue:
56(1)
Published: Jan. 4, 2024
Reduced
precipitation
as
well
warming
may
result
in
less
snow
accumulation
seasonally
snow-covered
areas,
leading
to
lower
minimum
soil
temperatures
and
more
frequent
severe
frosts.
Therefore,
plant
stress
is
increased
not
only
by
drought
warmer
months,
but
also
exposure
frost
cooler
periods.
We
conducted
a
4-year
field
experiment
evaluate
the
effects
of
diminished
snowpack
(through
removal)
rainfall
reduction
rain-out
shelters)
on
aboveground
productivity,
diversity
species
composition
two
subalpine
grassland
communities
from
central
region
Spanish
Pyrenees.
found
that
removal
treatment
decreased
temperature
0.5°C.
Plant
16
percent,
although
this
effect
was
observed
one
grasslands
studied.
Aboveground
primary
productivity
seemed
be
unaffected.
In
contrast,
we
negatively
affected
leguminous
forb
species,
yet
no
observed.
Both
treatments
were
important
drivers
changes
composition.
Overall,
our
results
suggest
resilience
cover
depend
specific
community
dominant
groups.
Journal of Agronomy and Crop Science,
Journal Year:
2024,
Volume and Issue:
210(4)
Published: July 24, 2024
ABSTRACT
Changes
in
precipitation
and
snow
melt
during
warmer
winters
can
increase
low‐temperature
waterlogging.
Such
conditions
may
bring
about
different
effects
when
compared
with
a
single
stress
trigger,
such
as
or
water
excess.
The
of
waterlogging
are
clearly
related
to
temperature,
the
consequences
excess
might
be
less
severe,
more
oxygen
is
dissolved
colder
water.
effect
cold
acclimation
(CA)
poorly
understood;
most
experiments
concerning
performed
at
relatively
high‐temperatures.
In
this
study,
we
examined
3
weeks
(approx.
2
cm
above
soil
level)
on
CA
Festuca
pratensis
Huds.
(Fp),
cool‐season
grass.
Measurements
were
taken
before
(after
prehardening,
flooding)
after
waterlogged
(treated)
non‐waterlogged
(control)
plants.
work
included:
(i)
freezing
tolerance
test
(regrowth
freezing),
(ii)
analysis
abscisic
acid
(ABA)
content
leaf,
(iii)
leaf
stomatal
conductance,
(iv)
content,
(v)
carbohydrates
analysis,
including
fructans,
(vi)
transcript
levels
selected
genes
involved
tolerance,
ABA
signalling
fructan
biosynthesis.
aim
study
was
hypothesis
that
Fp
enhances
(plant
regrowth
freezing)
increased
accumulation,
C‐repeat‐binding
transcription
factor
expression
and/or
carbohydrate
fructans.
Two
out
four
genotypes
exhibited
enhanced
following
due
relative
control.
Principal
component
(PCA)
revealed
positive
correlation
between
both
treatments,
pronounced
observed
However,
phytohormone
played
roles
these
two
treatments.
context
waterlogging,
dehydration
response
suffering
from
physiological
drought,
well
induction
factors
(CBFs)
sucrose,
which
improve
tolerance.
amount
polymerisation
degree
provide
sink
maintain
high
photosynthetic
efficiency,
but
not
directly
responsible
for
changes.
indicates
mechanisms
exposed
involve
maintaining
rate,
oxidative
Potato Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 31, 2024
Abstract
Sprout
suppression
is
a
crucial
aspect
of
maintaining
postharvest
Solanum
tuberosum
(potato)
tuber
quality.
1,4-dimethylnaphthalene
(DMN)
has
demonstrated
effective
sprout
during
long-term
storage
potatoes.
Its
mode
action,
however,
remains
unknown,
and
previous
studies
utilizing
single
cultivars
preclude
identification
common
response
to
treatment.
Thus,
the
goal
this
study
was
identify
transcriptomic
responses
multiple
potato
varying
dormancy
lengths
DMN
exposure
two
stages.
RNA-seq
gene
expression
profiling
supported
differing
sensitivity
treatment
dependent
upon
cultivar
stage.
A
limited
number
genes
with
similar
patterns
were
all
cultivars.
These
primarily
identified
in
ecodormant
tubers
associated
cell
cycle
progression,
hormone
signaling,
biotic
abiotic
stress
response.
resulted
significant
upregulation
members
ANAC/NAC
WRKY
transcription
factor
families.
Investigation
affected
protein-protein
interaction
networks
revealed
small
responsive
results
suggest
that
largely
stage-dependent,
primary
governed
by
growth-related
interactions.
Tree Physiology,
Journal Year:
2024,
Volume and Issue:
44(11)
Published: Oct. 12, 2024
Freeze-thaw
cycles
(FTCs)
are
the
major
seasonal
environment
stress
in
temperate
and
boreal
forests,
inducing
hydraulic
dysfunction
limiting
tree
growth
distribution.
There
two
types
of
FTCs
field:
with
increasing
temperature
from
winter
to
spring
(spring
FTCs);
decreasing
autumn
(autumn
FTCs).
While
previous
studies
have
evaluated
function
during
growing
season,
its
changes
how
it
adapts
different
remain
unverified.
To
fill
this
knowledge
gap,
eight
species
three
wood
(ring-
diffuse-porous,
tracheid)
were
selected
a
forest
undergoing
FTCs.
We
measured
branch
traits
spring,
summer,
autumn,
early,
middle
late
winter.
Ring-porous
trees
always
showed
low
native
conductance
(Kbranch),
high
percentage
loss
maximum
Kbranch
(PLCB)
water
potential
that
50%
(P50B)
non-growing
seasons
(except
summer).
decreased,
PLCB
P50B
increased
diffuse-porous
after
several
In
tracheid
trees,
decreased
while
did
not
change.
All
sampled
gradually
recovered
their
functions
summer.
Kbranch,
relatively
constant
FTCs,
indicating
almost
no
effect
on
functions.
These
results
suggested
significant
changes,
induced
more
damage
ring-porous
trees)
than
which
should
be
determined
by
number
trees'
vitality
before
findings
advance
our
understanding
they
cope
FTC
forests.
Functional Ecology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 17, 2024
Abstract
Temperate
winters
are
getting
warmer,
the
length
of
growing
season
is
increasing
and
mid‐winter
fluctuations
warm
freezing
temperatures
more
frequent.
Although
typically
winter
dormant,
some
herbaceous
perennials
can
maintain
or
grow
green
leaves
during
species
may
do
so
as
become
warmer.
For
wintergreen
to
provide
an
advantage,
they
must
be
able
photosynthesize
spells
but
also
withstand
between
two
conditions.
To
understand
leaf
traits
herbs,
we
studied
three
widely
distributed
perennial
species:
Bellis
perennis
,
Plantago
lanceolata
Trifolium
repens
.
contrast
leaves,
measured
common
economic
(LDMC,
SLA
N
content).
assess
tolerance,
ice
nucleation
temperature
LT50
after
frost
exposure
in
leaves.
confirm
photosynthetic
ability,
efficiency
(
Fv
/
Fm
value)
late
spring.
Additionally,
surveyed
dead
coverage
for
a
lawn
community
from
early
summer
(four
surveys
total).
We
used
our
observations
determine
phenological
categories
compared
them
historical
wintergreenness.
All
had
denser
with
lower
nitrogen
content
than
relatively
high
tolerance
(average
−8°C
−15°C
LT50).
Both
were
capable
photosynthesis,
was
greater
In
survey,
majority
plant
winter,
many
without
Many
herbs
previously
been
labelled
‘summer
green’.
With
these
initial
investigations
into
phenology
that
have
different
typical
both
photosynthesis
tolerance.
Wintergreen
broad
range
strategies
differ
20
years
ago.
temperate
regions,
becoming
new
thus
should
included
studies.
Read
free
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article
on
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