Antarctic
krill
is
a
species
with
fundamental
importance
for
the
Southern
Ocean
ecosystem.
Their
large
biomass
and
synchronized
movements,
like
diel
vertical
migration
(DVM),
significantly
impact
ecosystem
structure
biological
carbon
pump.
Despite
decades
of
research,
mechanistic
basis
DVM
remains
unclear.
Circadian
clocks
help
organisms
anticipate
daily
environmental
changes,
optimizing
adaptation.
In
this
study,
we
used
recently
developed
activity
monitor
to
record
swimming
individual,
wild-caught
under
various
light
conditions
across
different
seasons.
Our
data
demonstrate
how
circadian
clock,
in
combination
light,
drives
distinct
bimodal
pattern
activity,
which
could
facilitate
ecologically
important
behavioral
patterns,
such
as
DVM.
Rapid
damping
flexible
synchronization
indicate
that
clock
adapted
life
at
high
latitudes
seasonal
recordings
suggest
clock-based
mechanism
timing
processes.
findings
advance
our
understanding
high-latitude
adaptation
key
species.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Jan. 3, 2024
Abstract
If
there
was
no
gene
interaction,
the
aggregation
effect
would
increase
infinitely
with
of
number.
Epistasis
avoids
endless
accumulation
effects,
playing
a
role
homeostasis.
To
confirm
role,
QTL
epistases
were
analyzed
by
four
single-segment
substitution
lines
heading
date
QTLs
in
this
paper.
We
found
that
three
positive
effects
and
one
negative
generated
62.5%
dual
epistatic
57.7%
triple
forming
relationship
“positive
QTLs-negative
order
interactions-positive
two
interactions”.
In
way,
partially
neutralized
opposite
sum.
There
also
exceptions,
OsMADS50
Hd3a-2
always
consistent
directions
their
epistases,
implying
they
could
be
employed
pyramiding
breeding
different
objectives.
This
study
elucidated
mechanism
interactions
among
provided
valuable
genetic
resources
for
improving
rice.
New Phytologist,
Journal Year:
2024,
Volume and Issue:
242(2), P. 786 - 796
Published: March 7, 2024
Molecular
genetic
understanding
of
flowering
time
regulation
is
crucial
for
sorghum
development.
GRAIN
NUMBER,
PLANT
HEIGHT
AND
HEADING
DATE
7
(SbGhd7)
one
the
six
classical
loci
conferring
photoperiod
sensitivity
flowering.
However,
its
functions
remain
poorly
studied.
The
molecular
SbGhd7
were
characterized.
gene
regulatory
network
controlled
by
was
constructed
and
validated.
biological
roles
major
targets
overexpression
(OE)
completely
prevented
Additionally,
we
show
that
a
negative
regulator
flowering,
binding
to
promoter
motif
TGAATG(A/T)(A/T/C)
repressing
transcription
florigen
FLOWERING
LOCUS
T
10
(SbFT10)
floral
activators
EARLY
(SbEhd1),
FLAVIN-BINDING,
KELCH
REPEAT,
F-BOX1
(SbFKF1)
3
(SbELF3).
Reinforcing
direct
effect
SbGhd7,
SbEhd1
OE
activated
promoters
three
functional
florigens
(SbFT1,
SbFT8
SbFT10),
dramatically
accelerating
Our
studies
demonstrate
repressor
directly
indirectly
targeting
genes
activation.
mechanism
appears
ancient.
study
extends
current
model
transition
in
provides
framework
comprehensive
response.
BMC Plant Biology,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: April 2, 2025
Longans
are
among
the
most
economically
important
subtropical
fruits.
Its
flowering
is
sensitive
to
photoperiod,
and
time
has
a
significant
influence
on
yield
quality.
CONSTANS-like
(COL)
gene
plays
key
role
in
regulating
induced
longans.
However,
specific
of
COL
family
regulation
remains
unknown.
In
this
study,
10
DlCOL
genes
were
identified
longans
using
comprehensive
bioinformatics
analysis
named
based
their
physical
chromosomal
locations.
Phylogenetic
tree
showed
that
divided
into
three
subfamilies,
each
with
conserved
domain.
When
combined
collinearity
analysis,
we
found
more
closely
related
dicotyledons.
differentially
expressed
various
longan
organs,
DlCOL1,
DlCOL3,
DlCOL9
all
highest
expression
levels
floral
buds.
differential
at
different
induction
stages
'Sijimi'
('SJ')
or
'Shixia'
('SX'),
DlCOL4
was
upregulated
by
3-fold
"T1-T2"
stage
'SJ',
but
there
no
during
'SX'.
Subcellular
localization
indicated
localized
nucleus.
Heterologous
transformation
Arabidopsis
can
negatively
regulate
transgenic
plants.
The
qRT-PCR
(Quantitative
real-time
PCR)
results
DICOL4
may
inhibit
interacting
AtTFL
AtCOL.
This
study
demonstrates
potential
functional
flowering.
Antarctic
krill
is
a
species
with
fundamental
importance
for
the
Southern
Ocean
ecosystem.
Their
large
biomass
and
synchronized
movements,
like
diel
vertical
migration
(DVM),
significantly
impact
ecosystem
structure
biological
carbon
pump.
Despite
decades
of
research,
mechanistic
basis
DVM
remains
unclear.
Circadian
clocks
help
organisms
anticipate
daily
environmental
changes,
optimizing
adaptation.
In
this
study,
we
used
recently
developed
activity
monitor
to
record
swimming
individual,
wild-caught
under
various
light
conditions
across
different
seasons.
Our
data
demonstrate
how
circadian
clock,
in
combination
light,
drives
distinct
bimodal
pattern
activity,
which
could
facilitate
ecologically
important
behavioral
patterns,
such
as
DVM.
Rapid
damping
flexible
synchronization
indicate
that
clock
adapted
life
at
high
latitudes
seasonal
recordings
suggest
clock-based
mechanism
timing
processes.
findings
advance
our
understanding
high-latitude
adaptation
key
species.
