Leaf-scale
photosynthetic
optimization
models
can
quantitatively
predict
acclimation
and
have
become
an
important
means
of
improving
vegetation
land
surface
models.
Previous
generally
been
based
on
the
optimality
assumption
maximizing
net
assimilation
per
unit
leaf
area
(i.e.
area-based
optimality)
while
overlooking
other
assumptions
such
as
dry
mass
mass-based
optimality).
This
paper
compares
predicted
results
to
different
environmental
conditions
between
The
predictions
are
then
verified
using
observational
data
from
literatures.
model
better
growth
light
intensity,
air
temperature
CO
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 5, 2024
Abstract
Terrestrial
ecosystems
have
been
serving
as
a
strong
carbon
sink
that
offsets
one
quarter
of
anthropogenic
CO2
emissions.
Carbon
use
efficiency
(CUE),
the
percentage
photosynthesized
is
available
for
biomass
production
and
other
secondary
products,
factor
determining
size.
The
global
variation
in
CUE
remains
unclear,
however,
recent
reports
disagree
over
responses
to
temperature,
dryness,
forest
types
stand
age,
there
are
limited
direct
observations
constrain
related
uncertainty.
Here,
we
propose
infer
from
spatially
distributed
land-atmosphere
exchange
eddy
covariance
sites
based
on
first
principles
ecosystem
respiration
-
photosynthesis
coupling.
Across
2737
site-years,
derived
0.43
±
0.11,
consistent
with
previous
inventory-based
estimates
(0.46
0.12,
n
=
244)
but
better
representation
spatial-temporal
CUE.
We
find
consistently
decreases
precipitation,
light
availability
significant
difference
baseline
among
biomes.
Importantly,
deciduous
forests
typically
15%
higher
than
evergreen
forests,
suggesting
long-term
more
efficient
using
photosynthate.
Our
study
advances
understanding
provides
new
insights
guide
best
practices
conservation,
management,
restoration
sequestration.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(19)
Опубликована: Апрель 19, 2024
Increasing
the
speed
of
scientific
progress
is
urgently
needed
to
address
many
challenges
associated
with
biosphere
in
Anthropocene.
Consequently,
critical
question
becomes:
How
can
science
most
rapidly
large,
complex
global
problems?
We
suggest
that
lag
development
a
more
predictive
not
only
because
so
much
complex,
or
we
do
have
enough
data,
are
doing
experiments,
but,
large
part,
unresolved
tension
between
three
dominant
cultures
pervade
research
community.
introduce
and
explain
concept
present
novel
analysis
their
characteristics,
supported
by
examples
formal
mathematical
definition/representation
what
this
means
implies.
The
operate,
varying
degrees,
across
all
science.
However,
within
biosciences,
contrast
some
other
sciences,
they
remain
relatively
separated,
lack
integration
has
hindered
potential
power
insight.
Our
solution
accelerating
broader,
enhance
cultures.
process
integration—Scientific
Transculturalism—recognizes
push
for
interdisciplinary
research,
general,
just
enough.
Unless
these
formally
appreciated
thinking
iteratively
integrated
into
discovery
advancement,
there
will
continue
be
numerous
significant
increasingly
limit
forecasting
prediction
efforts.
PeerJ,
Год журнала:
2025,
Номер
13, С. e19214 - e19214
Опубликована: Апрель 4, 2025
The
canopy
leaves
of
allomorphic
aroid
vines
can
exceed
2,000
cm
2
,
up
to
30
times
larger
than
respective
understorey
leaves.
In
the
literature,
this
increase
in
leaf
area
was
hypothesized
improve
its
light
foraging
capacity.
viability
these
large
depends
on
carbon
acquisition
obtained
from
their
and
costs
production,
maintenance
support.
To
evaluate
understand
how
enlargement
affects
performance,
we
analyzed
photosynthesis
respiration
Epipremnum
aureum
different
sizes
via
photosynthetic
response
curves,
morpho-physiology
anatomical
parameters.
Leaf
size
increased
by
varying
growth
direction
(horizontal
vs
.
vertical)
conditions
(low
high).
Vertical
plants
high
produced
9–13
those
under
other
conditions.
Saturated
rates
per
were
similar
across
E.
regardless
size,
but
while
specific
decreased
This
may
suggests
that
do
not
offset
unit
short
term,
despite
field
observations
continuous
with
plant
size.
However,
levels
able
saturate
are
achieved
only
positioned
at
canopies
(PPFD
around
1,000
µmol
m
−2
s
−1
),
occurring
understory
where
smaller
100
).
is
confirmed
higher
values
relative
rate
(RGR)
net
assimilation
(NAR)
parameters
exhibited
vertical
light.
saturated
found
here
experimental
for
could
be
related
invasive
capacities
as
alien
species
world.
We
propose
might
outweighed
a
strategy
optimizes
morphophysiology,
anatomy,
and,
lifespan
maximize
lifetime
gain
tropical
forests.
ABSTRACT
Despite
intensive
research,
our
understanding
of
how
plants
respond
to
warming
by
coordinating
their
full
arsenal
traits
adjust
fitness
is
lacking.
To
fill
this
gap,
we
applied
a
trait‐based
framework
with
three
clusters
(two
functional
clusters:
“carbon‐fixation
rate”
and
area”;
third
cluster:
“total
carbon
fixation”)
global
dataset
compiled
from
572
studies
experiments
677
species
comprehensive
list
components.
The
pairwise
correlation
analysis
complemented
SEM
PCA
showed
that
increased
biomass
(the
core
variable
in
the
cluster)
under
satellite
two
traits,
net
photosynthesis
rate
total
leaf
area,
respectively.
In
particular,
trait
coordination
was
characterised
maintenance
increase
which
robust
across
ecological
contexts
although
responses
variables
per
se
displayed
context‐dependences.
Moreover,
trade‐offs
between
reproduction
(itself
bearing
mass
vs.
number
trade‐offs)
scaled
enhance
except
where
reduced.
These
findings
could
help
explain
predict
plant
form
function
world.
Plant Cell & Environment,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 24, 2025
ABSTRACT
Indisputably,
temperature
and
precipitation
are
key
environmental
variables
driving
plant
trait
variation
shaping
ecological
strategies.
However,
it
is
challenging
to
ascertain
their
relative
influences
because
site
often
correlated.
Here,
using
Eucalyptus
as
a
model
system
representing
woody
evergreen
species
more
broadly,
we
sought
disentangle
influence
on
wood
anatomical
traits
underpinning
hydraulics.
From
common
garden
sampled
29
pairs
of
closely‐related
species,
each
species‐pair
either
contrast
in
or
precipitation,
but
never
both.
Very
clearly,
both
phylogenetic
non‐phylogenetic
analyses,
from
lower‐rainfall
colder
regions
had
thicker
vessel
walls,
likely
an
adaptation
drought
freezing,
enabling
water
transport
at
negative
potentials
with
reduced
risk
cavitation
implosion.
On
average,
warmer
smaller
vessels,
theoretical
hydraulic
conductivity
remained
stable
across
temperatures
due
increased
density
compensating
for
diameters.
These
trends
being
observed
adult
plants
grown
under
conditions
suggests
that
anatomy
“hard‐wired”,
gene
×
environment
interactions
relatively
weak.
This
insight
understanding
the
trait‐basis
strategies
related
climate.