Journal of Experimental Biology,
Год журнала:
2021,
Номер
224(6)
Опубликована: Фев. 3, 2021
ABSTRACT
The
periwinkle
snail
Echinolittorina
malaccana,
for
which
the
upper
lethal
temperature
is
near
55°C,
one
of
most
heat-tolerant
eukaryotes
known.
We
conducted
a
multi-level
investigation
–
including
cardiac
physiology,
enzyme
activity,
and
targeted
untargeted
metabolomic
analyses
that
elucidated
spectrum
adaptations
to
extreme
heat
in
this
organism.
All
systems
examined
showed
intensity-dependent
responses.
Under
moderate
stress
(37–45°C),
depressed
activity
entered
state
metabolic
depression.
global
enzymatic
revealed
production
metabolites
characteristic
oxygen-independent
pathways
ATP
generation
(lactate
succinate)
state,
suggests
anaerobic
metabolism
was
main
energy
supply
pathway
under
(37–52°C).
also
alterations
glycerophospholipid
(52°C),
likely
reflected
adaptive
changes
maintain
membrane
structure.
Small-molecular-mass
organic
osmolytes
(glycine
betaine,
choline
carnitine)
complex
concentration
were
consistent
with
role
these
protein-stabilizing
solutes
protection
proteome
stress.
This
thermophilic
species
can
thus
deploy
wide
array
strategies
acclimatize
extremely
high
temperatures.
Physiologia Plantarum,
Год журнала:
2020,
Номер
172(2), С. 334 - 350
Опубликована: Авг. 15, 2020
Exposure
to
drought
stress
negatively
affects
plant
productivity
and
consequently
threatens
global
food
security.
As
climates
change,
identifying
solutions
increase
the
resilience
of
plants
is
increasingly
important.
Several
chemical
treatments
have
recently
emerged
as
promising
techniques
for
various
individual
combined
abiotic
stresses.
This
study
shows
compelling
evidence
on
how
acetic
acid
application
promotes
acclimation
responses
in
soybean
by
investigating
several
morphological,
physiological
biochemical
attributes.
Foliar
applications
drought-exposed
resulted
improvements
root
biomass,
leaf
area,
photosynthetic
rate
water
use
efficiency;
leading
improved
growth
performance.
Drought-induced
accumulation
reactive
oxygen
species,
resultant
increased
levels
malondialdehyde
electrolyte
leakage,
were
considerably
reverted
treatment.
Acetic
acid-sprayed
suffered
less
oxidative
due
enhancement
antioxidant
defense
mechanisms,
evidenced
activities
superoxide
dismutase,
ascorbate
peroxidase,
catalase,
glutathione
peroxidase
S-transferase.
Improved
shoot
relative
content
was
also
linked
soluble
sugars
free
amino
acids,
indicating
a
better
osmotic
adjustment
following
treatment
plants.
stem/root,
leaf/stem
leaf/root
mineral
ratios
overall
status
drought-stressed
Taken
together,
our
results
demonstrated
that
enabled
positively
regulate
ability,
balance,
homeostasis
responses;
thereby
suggesting
cost-effective
easily
accessible
management
drought-prone
areas.
Frontiers in Plant Science,
Год журнала:
2020,
Номер
11
Опубликована: Ноя. 30, 2020
In
a
context
of
growing
worldwide
food
demand
coupled
to
the
need
develop
sustainable
agriculture,
it
is
crucial
improve
crop
nitrogen
use
efficiency
(NUE)
while
reducing
field
N
inputs.
Classical
genetic
approaches
based
on
natural
allelic
variations
existing
within
crops
have
led
discovery
quantitative
trait
loci
controlling
NUE
under
low
conditions;
however,
identification
candidate
genes
from
mapping
studies
still
challenging.
Amino
acid
metabolism
cornerstone
plant
management,
which
involves
uptake,
assimilation,
and
remobilization
efficiencies,
finely
regulated
during
acclimation
conditions
other
abiotic
stresses.
Over
last
two
decades,
biotechnological
engineering
amino
has
promising
results
for
improvement
NUE,
more
recently
conditions.
This
review
summarizes
current
work
carried
out
in
provides
perspectives
new
future
strategies
improvement.
Plants,
Год журнала:
2021,
Номер
10(10), С. 2044 - 2044
Опубликована: Сен. 28, 2021
Proline
has
been
reported
to
play
an
important
role
in
helping
plants
cope
with
several
stresses,
including
salinity.
This
study
investigates
the
relationship
between
proline
accumulation
and
salt
tolerance
accession
of
Australian
wild
rice
Journal of Experimental Biology,
Год журнала:
2021,
Номер
224(6)
Опубликована: Фев. 3, 2021
ABSTRACT
The
periwinkle
snail
Echinolittorina
malaccana,
for
which
the
upper
lethal
temperature
is
near
55°C,
one
of
most
heat-tolerant
eukaryotes
known.
We
conducted
a
multi-level
investigation
–
including
cardiac
physiology,
enzyme
activity,
and
targeted
untargeted
metabolomic
analyses
that
elucidated
spectrum
adaptations
to
extreme
heat
in
this
organism.
All
systems
examined
showed
intensity-dependent
responses.
Under
moderate
stress
(37–45°C),
depressed
activity
entered
state
metabolic
depression.
global
enzymatic
revealed
production
metabolites
characteristic
oxygen-independent
pathways
ATP
generation
(lactate
succinate)
state,
suggests
anaerobic
metabolism
was
main
energy
supply
pathway
under
(37–52°C).
also
alterations
glycerophospholipid
(52°C),
likely
reflected
adaptive
changes
maintain
membrane
structure.
Small-molecular-mass
organic
osmolytes
(glycine
betaine,
choline
carnitine)
complex
concentration
were
consistent
with
role
these
protein-stabilizing
solutes
protection
proteome
stress.
This
thermophilic
species
can
thus
deploy
wide
array
strategies
acclimatize
extremely
high
temperatures.
