Generalized Stomatal Optimization of Evolutionary Fitness Proxies for Predicting Plant Gas Exchange Under Drought, Heatwaves, and Elevated CO2
Global Change Biology,
Год журнала:
2025,
Номер
31(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Stomata
control
plant
water
loss
and
photosynthetic
carbon
gain.
Developing
more
generalized
accurate
stomatal
models
is
essential
for
earth
system
predicting
responses
under
novel
environmental
conditions
associated
with
global
change.
Plant
optimality
theories
offer
one
promising
approach,
but
most
such
assume
that
conductance
maximizes
net
assimilation
subject
to
some
cost
or
constraint
of
water.
We
move
beyond
this
approach
by
developing
a
new,
theory
conductance,
optimizing
any
non‐foliar
proxy
requires
reserves,
like
growth,
survival,
reproduction.
overcome
two
prior
limitations.
First,
we
reconcile
the
computational
efficiency
instantaneous
optimization
biologically
meaningful
dynamic
feedback
over
lifespans.
Second,
incorporate
non‐steady‐state
physics
in
account
temporal
changes
water,
carbon,
energy
storage
within
its
environment
occur
timescales
stomata
act,
contrary
previous
theories.
Our
optimal
compares
well
observations
from
seedlings,
saplings,
mature
trees
field
greenhouse
experiments.
model
predicts
predispositions
mortality
during
2018
European
drought
captures
realistic
cues,
including
partial
alleviation
heat
stress
evaporative
cooling
negative
effect
accumulating
foliar
soluble
carbohydrates,
promoting
closure
elevated
CO
2
.
advance
incorporating
evolutionary
fitness
proxies
enhance
utility
without
compromising
realism,
offering
promise
future
realistically
accurately
predict
fluxes.
Язык: Английский
A stomatal optimization model integrating leaf stomata-photosynthetic capacity regulation in response to soil water stress
Agricultural Water Management,
Год журнала:
2025,
Номер
308, С. 109285 - 109285
Опубликована: Янв. 8, 2025
Язык: Английский
High transpirational cooling by urban trees despite extreme summer heatwaves
Urban forestry & urban greening,
Год журнала:
2025,
Номер
unknown, С. 128819 - 128819
Опубликована: Апрель 1, 2025
Язык: Английский
Global Photosynthesis Acclimates to Rising Temperatures Through Predictable Changes in Photosynthetic Capacities, Enzyme Kinetics, and Stomatal Sensitivity
Journal of Advances in Modeling Earth Systems,
Год журнала:
2025,
Номер
17(4)
Опубликована: Апрель 1, 2025
Abstract
Thermal
acclimation
of
photosynthesis,
the
physiological
adjustment
to
temperature
over
weeks,
may
help
plants
mitigate
adverse
impacts
global
warming,
but
is
often
under‐represented
in
Earth
System
Models
(ESMs).
We
evaluated
a
plant
functional
type
(PFT)‐agnostic,
optimality‐based
model
photosynthesis
with
data
set
leaf
gas
exchange
measurements.
investigated
how
three
key
traits
vary
along
gradient
growing‐season
temperatures
:
optimal
,
net
rate
at
and
width
response
curve
.
analyzed
each
trait
influenced
by
processes:
photosynthetic
capacities
(carboxylation,
electron
transport,
respiration),
their
enzymatic
responses,
stomatal
sensitivity
vapor
pressure
deficit.
The
inclusion
all
processes
was
essential
for
reproducing
observed
patterns:
linear
increase
no
correlations
Acclimation
responses
crucial
accurately
predicting
necessary
avoid
bias
that
can
arise
when
relying
on
static,
PFT‐specific
parameters.
Comparing
without
any
showed
thermal
buffers
warming
substantially,
leading
smaller
increases
cold
climates
(+2%
instead
+18%)
declines
warm
(−4%
−22%).
Our
observations‐constrained
predictions
suggest
an
important
role
ESM,
partly
mitigating
effects
climate.
Язык: Английский
Enhancing the water use efficiency model predictions for Platycladus orientalis and Quercus variabilis: Integrating the dynamics of carbon dioxide concentration and soil water availability
The Science of The Total Environment,
Год журнала:
2024,
Номер
959, С. 178179 - 178179
Опубликована: Дек. 24, 2024
Язык: Английский