Previous
studies
have
confirmed
the
stimulating
effect
of
blue
light
on
phenolic
compounds
accumulation
and
emphasized
that
sufficient
dose
is
essential
for
biosynthesis
B-dihydroxylated
flavonoids
with
enhanced
antioxidant
properties
(under
UV-lacking
conditions).
This
study
investigates
importance
complex
role
in
plant
tolerance
against
acute
photooxidative
stress.
Hordeum
vulgare
(L.
Cv.
Bojos)
seedlings
were
acclimated
to
different
spectra
(blue,
green:red
1:1,
white
composed
blue:green:red
1:1:1)
at
total
irradiance
400
µmol.m-2.s-1.
Subsequently,
they
subjected
a
3-hour
combined
stress
induced
by
high
photosynthetically
active
(850-950
µmol.m-2.s-1)
UV-B
(2.0-2.5
W.m-2)
radiation.
Content
flavonoids,
expression
genes
involved
their
(phenylalanine
ammonia-lyase,
chalcone
synthase,
flavonoid
3'-hydroxylase),
activity
extracts
significantly
highest
plants
light.
As
an
indicator
reactive
oxygen
species
interaction
biomolecules,
content
lipid
hydroperoxides
was
estimated.
It
demonstrated
revealed
lower
extent
peroxidation
compared
those
or
Plants
exposed
light-induced
3
hours
exhibited
pronounced
disruption
PSII
function:
FV/FM
tended
decrease
proportionally
decreasing
amount
photons
treatments.
Additionally,
exposure
upregulated
related
but
not
encoding
enzymes.
We
higher
resistance
presume
are
protection
during
phase
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Oct. 20, 2023
Abstract
Photosynthesis
is
the
only
yield-related
trait
that
has
not
yet
been
substantially
improved
by
plant
breeding.
The
limited
results
of
previous
attempts
to
increase
yield
via
improvement
photosynthetic
pathways
suggest
more
knowledge
still
needed
achieve
this
goal.
To
learn
about
genetic
and
physiological
basis
high
light-use
efficiency
(LUE)
at
irradiance,
we
study
Hirschfeldia
incana
.
Here,
compare
transcriptomic
response
light
H.
with
three
other
members
Brassicaceae,
Arabidopsis
thaliana,
Brassica
rapa
,
nigra
which
have
a
lower
LUE.
First,
built
high-light,
high-uniformity
growing
environment
in
climate-controlled
room.
Plants
grown
system
developed
normally
showed
no
signs
stress
during
whole
growth
period.
Then
compared
gene
expression
low
high-light
conditions
across
four
species,
utilizing
panproteome
group
homologous
proteins
efficiently.
As
expected,
all
species
actively
regulate
genes
related
process.
An
in-depth
analysis
on
involved
key
revealed
general
trend
conditions.
However,
distinguishes
itself
from
through
higher
certain
these
pathways,
either
constitutive
expression,
as
for
LHCB8
ordinary
differential
PSBE
or
cumulative
obtained
simultaneous
multiple
copies,
seen
LHCA6
These
differentially
expressed
path-ways
are
interesting
leads
further
investigate
exact
relationship
between
protein
abundance
turnover,
ultimately
LUE
phenotype.
In
addition,
can
also
exclude
thousands
“explaining”
phenotype,
because
they
do
show
both
Finally,
deliver
resource
fully
under,
rather
than
briefly
exposed
to,
very
supporting
efforts
develop
highly
efficient
photosynthesis
crop
plants.
International Journal of Molecular Sciences,
Journal Year:
2022,
Volume and Issue:
23(23), P. 14755 - 14755
Published: Nov. 25, 2022
Plant
miRNAs
are
powerful
regulators
of
gene
expression
at
the
post-transcriptional
level,
which
was
repeatedly
proved
in
several
model
plant
species.
considered
to
be
key
many
developmental,
homeostatic,
and
immune
processes
plants.
However,
our
understanding
is
still
limited,
despite
fact
that
an
increasing
number
studies
have
appeared.
This
systematic
review
aims
summarize
current
knowledge
about
spring
barley
(Hordeum
vulgare),
important
agronomical
crop
worldwide
serves
as
a
common
monocot
for
studying
abiotic
stress
responses
well.
can
help
us
understand
connection
between
(not
only)
stresses
general.
In
end,
some
future
perspectives
open
questions
summarized.
The Journal of Organic Chemistry,
Journal Year:
2024,
Volume and Issue:
89(12), P. 8836 - 8844
Published: June 5, 2024
The
photocatalytic
synthesis
of
thermodynamically
less-stable
Z-alkenes
has
received
considerable
research
attention
in
recent
years.
In
this
study,
a
recycling
photoreactor
was
applied
to
the
photoisomerization
E-alkenes
(cinnamamide
and
Weinreb
amide
derivatives)
produce
Z-alkenes.
closed-loop
system
comprises
an
immobilized
photosensitizer
achieve
rapid
high-performance
liquid
chromatography
instrument
for
separation
Z/E
diastereomers.
After
4–10
cycles,
desired
pure
were
obtained
efficiently.
system,
(thioxanthone)
covalently
on
silica
gel
via
bonding,
which
led
enhanced
activity
compared
parent
thioxanthone.
This
shows
promise
as
alternative
production
Food Research International,
Journal Year:
2024,
Volume and Issue:
200, P. 115438 - 115438
Published: Dec. 3, 2024
Phenolic
compounds
are
known
for
their
health-promoting
effects
on
humans.
Pak
choi
(Brassica
rapa
ssp.
chinensis)
and
Swiss
chard
(Beta
vulgaris
subsp.
vulgaris)
used
here
as
model
plants,
they
eaten
raw
baby
leaf
lettuce
differ
in
phenolic
compound
profile
while
showing
similar
morphology.
In
a
greenhouse
an
artificial
light
source
with
UV-B
(215
mW
m
Previous
studies
have
confirmed
the
stimulating
effect
of
blue
light
on
phenolic
compounds
accumulation
and
emphasized
that
sufficient
dose
is
essential
for
biosynthesis
B-dihydroxylated
flavonoids
with
enhanced
antioxidant
properties
(under
UV-lacking
conditions).
This
study
investigates
importance
complex
role
in
plant
tolerance
against
acute
photooxidative
stress.
Hordeum
vulgare
(L.
Cv.
Bojos)
seedlings
were
acclimated
to
different
spectra
(blue,
green:red
1:1,
white
composed
blue:green:red
1:1:1)
at
total
irradiance
400
µmol.m-2.s-1.
Subsequently,
they
subjected
a
3-hour
combined
stress
induced
by
high
photosynthetically
active
(850-950
µmol.m-2.s-1)
UV-B
(2.0-2.5
W.m-2)
radiation.
Content
flavonoids,
expression
genes
involved
their
(phenylalanine
ammonia-lyase,
chalcone
synthase,
flavonoid
3'-hydroxylase),
activity
extracts
significantly
highest
plants
light.
As
an
indicator
reactive
oxygen
species
interaction
biomolecules,
content
lipid
hydroperoxides
was
estimated.
It
demonstrated
revealed
lower
extent
peroxidation
compared
those
or
Plants
exposed
light-induced
3
hours
exhibited
pronounced
disruption
PSII
function:
FV/FM
tended
decrease
proportionally
decreasing
amount
photons
treatments.
Additionally,
exposure
upregulated
related
but
not
encoding
enzymes.
We
higher
resistance
presume
are
protection
during
phase
