Study sets matching "signaling in plants"

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Study sets matching "signaling in plants"

17 terms
Signaling in Plants
Signal transduction pathway
Phosphorylation cascade
Kinase
Phosphatases
Pathways in which a signal is converted from one form to anot…
Series of different enzymes are phosphorylated in turn, each…
Enzyme that adds a phosphate group
Enzyme that removes a phosphate group
Signal transduction pathway
Pathways in which a signal is converted from one form to anot…
Phosphorylation cascade
Series of different enzymes are phosphorylated in turn, each…
Plant Signaling
Stimuli of Plants
Perception
Growth Hormones
Growth ending Hormones/Senescence
-Light... -Temp.... -Gravity... -Touch... -Day length/time
Receptor cells transduce information into chem. message
-Auxin... -Gibberellin
-Ethylene
Stimuli of Plants
-Light... -Temp.... -Gravity... -Touch... -Day length/time
Perception
Receptor cells transduce information into chem. message
Plant Signaling
Plant defense against Microbial attack
Tropisms
Long and Short Night plants
Red vs Far Red
-first line of defense: epidermis and bark... -second line: chem…
-gravitropism: roots grow towards gravity (positive); advanta…
-short day/long night plants: flower when night gets to a cer…
-red light is the most effective color in interrupting the ni…
Plant defense against Microbial attack
-first line of defense: epidermis and bark... -second line: chem…
Tropisms
-gravitropism: roots grow towards gravity (positive); advanta…
32 terms
Plant Signaling
phototropism
gravitropism
thigmotropism
signal transduction
(seasonal changes) light levels
(seasonal changes) gravity
(seasonal changes) wind/touch
(cells receive and transduce external signals) to change exte…
phototropism
(seasonal changes) light levels
gravitropism
(seasonal changes) gravity
Plant Signaling
How do Irises know when it is spring?
How are external signals responses med…
Internal signals (plant hormones) indu…
Phototropism:
Light & Circadian clock
Mediated via internal signals, ex. plant hormones
Pathogens, light, and circadian clock; coumpounds screted by…
movement toward light, showed by Darwin that was mediated by…
How do Irises know when it is spring?
Light & Circadian clock
How are external signals responses med…
Mediated via internal signals, ex. plant hormones
67 terms
Plant Signalling
What are the functions of hormone regu…
What are the 5 classic hormones? Which…
What are the 4 more recent hormones?
Hormone
Regulate cellular activities, organogenesis and patterning, r…
Auxins, Gibberellins, ethylene, Abscisic acid and cytokinins.…
Brassinosteroids, Jasomates, salicylate and strigolactones.
any member of a class of signaling molecules produced by glan…
What are the functions of hormone regu…
Regulate cellular activities, organogenesis and patterning, r…
What are the 5 classic hormones? Which…
Auxins, Gibberellins, ethylene, Abscisic acid and cytokinins.…
9 terms
Plant Signals
Tropisms
Study signal transduction pathway diag…
Hormones are...
Auxin (plant hormone class) functions…
flexible patterns of growth
Ok
main chemical messengers
cell elongation and cell division
Tropisms
flexible patterns of growth
Study signal transduction pathway diag…
Ok
32 terms
Plant Signals
Importance of signals
Coordination of signals
Presentation time
Threshold
it's so a plant can respond to it's environment
.
.
.
Importance of signals
it's so a plant can respond to it's environment
Coordination of signals
.
Plant Signalling
Abscisic Acid
Auxin
Cytokinins
Ethylene
A plant hormone that is responsible for growth inhibiting. It…
A plant hormone that stimulates growth in new shoots.
A plant hormone that stimulates cells division when in the pr…
A plant hormone responsible for fruit ripening and development.
Abscisic Acid
A plant hormone that is responsible for growth inhibiting. It…
Auxin
A plant hormone that stimulates growth in new shoots.
Lecture 28 - Signaling in Plants
pigment
photoreceptor
phosphorylation cascade
PHOT1
Any molecule that absorbs certain wavelengths of visible ligh…
A molecule, a cell, or an organ that is specialized to detect…
A series of enzyme-catalyzed phosphorylation reactions common…
A gene that codes for a membrane protein that, when phosphory…
pigment
Any molecule that absorbs certain wavelengths of visible ligh…
photoreceptor
A molecule, a cell, or an organ that is specialized to detect…
23 terms
Lecture 28: Signaling in Plants
plants gather, process, and respond to…
receptor proteins change shape in resp…
once the information has been transduc…
there are two basic types of signal tr…
1) receptor cell transduces signal... 2) cell-cell (hormone) sig…
the change in shape may be caused by wavelength of light, pre…
it travels down a signal transduction pathway
phosphorylation cascades and second messenger systems
plants gather, process, and respond to…
1) receptor cell transduces signal... 2) cell-cell (hormone) sig…
receptor proteins change shape in resp…
the change in shape may be caused by wavelength of light, pre…
Plant Signaling in Electromagnetic Reception
plant signaling steps
reception
transduction/amplification
response
reception... transduction/Amplification... response
light energy
conversion of light energy into cell energy
output
plant signaling steps
reception... transduction/Amplification... response
reception
light energy
32 terms
Chp 40 Plant Signaling
Environmental cues that plants respond…
Signal Transduction process
Bending
Phototropism
sunlight, wind, gravity, pressure
1. signal arrives... 2. receptor protein changes... 3. protein cata…
cell elongation that allows plants to grow toward the light
directed movement in response to light
Environmental cues that plants respond…
sunlight, wind, gravity, pressure
Signal Transduction process
1. signal arrives... 2. receptor protein changes... 3. protein cata…
18 terms
CHEMICAL SIGNALS IN PLANTS
PHOTOTROPHIC RESPONSE
PHOTOTROPIN
GRAVIOTROPIC RESPONSE
AMYOPLASTS
BENDING OF PLANT TOWARDS LIGHT
PROTEIN COMPLEX WITH BLUE LIGHT SENSITIVE PIGMENTS
PLANT GROWS AWAY FROM GRAVITIES PULL
FOUND IN ROOT CAP CELLS
PHOTOTROPHIC RESPONSE
BENDING OF PLANT TOWARDS LIGHT
PHOTOTROPIN
PROTEIN COMPLEX WITH BLUE LIGHT SENSITIVE PIGMENTS
Ch 31 Plant Signaling
auxin
gibberellin
abscisic acid (ABA)
ethylene
stem elongation, apical dominance, phyllotaxy
axillary bud growth, seed germination
drought
promotes ripening
auxin
stem elongation, apical dominance, phyllotaxy
gibberellin
axillary bud growth, seed germination
Lesson 5 - Plant Signaling
Abscisic Acid (ABA)
Abscission
Amyloplast
Apical Dominance
...
In vascular plants, the dropping of leaves, flowers, fruits,…
A plant organelle called a plastid that specializes in storin…
...
Abscisic Acid (ABA)
...
Abscission
In vascular plants, the dropping of leaves, flowers, fruits,…
14 terms
ch 40 plant signaling
phototropism
phototropins
responses triggered by blue-light
Fritz Went
directed response toward light
pigments that absorb certain wavelengths
chloroplast movement (bright light-sides; low light-spread ou…
hormone named auxin
phototropism
directed response toward light
phototropins
pigments that absorb certain wavelengths
Chemical Signals in Plants
plant responses to environment
types of light responses
photomorphogenesis
phototropic response
stationary, light, flowering and growth, gravity, physical co…
photomorphogenesis, phototropic response
non-directional development, flowering, seed, biological clock
directional developement; compensates for lack of mobility
plant responses to environment
stationary, light, flowering and growth, gravity, physical co…
types of light responses
photomorphogenesis, phototropic response
Ch. 39 Plant Signaling
assay
auxin
coleoptile
ethylene
a
...
...
...
assay
a
auxin
...
Plant signaling (955-961)
Most abundant cell surface receptor in…
differences in signaling b/t animal/pl…
auxin
phytochromes
enzyme coupled... RTK in ANIMALS (serine/tyrosine)... LRR in plants…
BOTH: NO/cGMP/Ca/Rho... absent in PLANTS: JAK/STAT/TGFB, NOTCH,…
helps grow towards light/root downwards/grow up. ... effector is…
dimeric cytoplasmic serine/threonine kinase... RED LIGHT ACTIVAT…
Most abundant cell surface receptor in…
enzyme coupled... RTK in ANIMALS (serine/tyrosine)... LRR in plants…
differences in signaling b/t animal/pl…
BOTH: NO/cGMP/Ca/Rho... absent in PLANTS: JAK/STAT/TGFB, NOTCH,…
36 terms
Ch. 40 Plant Signaling
Epiphytes
Parasites
Carnivorous
Environmental Stimuli
-grow in absence of soil ... -may grow on leaves/branches... -absor…
-live on or in host... -obtain nutrients from host... -ex: mistleto…
-use modified leaves to trap insects and animals, kill, absor…
-light... -gravity... -pressure... -pests/ wounds
Epiphytes
-grow in absence of soil ... -may grow on leaves/branches... -absor…
Parasites
-live on or in host... -obtain nutrients from host... -ex: mistleto…
20 terms
Water Transport and Plant Signaling
proton pumps
cotransport
solute potential
pressure potential
transport proteins that pump hydrogen ions out, creates membr…
where the proton gradient is used to actively transport other…
(osmotic potential) determines where osmosis takes water, pro…
the physical pressure on a solution (negative or positive), d…
proton pumps
transport proteins that pump hydrogen ions out, creates membr…
cotransport
where the proton gradient is used to actively transport other…
Plant Reproduction and Signaling
flowers
function of flowers
stamen
carpel
sex organs of angiosperms
to attract pollinators
male reproductive part
female reproductive part
flowers
sex organs of angiosperms
function of flowers
to attract pollinators
Plant Signaling & Defense
etiolation
gravitropism
induced defense
photo morphogenesis
Process where seedlings allocate their energy into rapid stem…
Process where plants grow in response to gravity through diff…
Process where plant induces production of defense following a…
Plant growth & development mediated by blue & red light
etiolation
Process where seedlings allocate their energy into rapid stem…
gravitropism
Process where plants grow in response to gravity through diff…
30 terms
10. Plant Signaling
gravitropism
thigmotropism
signal transduction
effects of signal transduction
gravity
wind/touch
change external signal into intracellular signal. complex pro…
affect transcription, translation, and ion transport
gravitropism
gravity
thigmotropism
wind/touch
54 terms
Chemical Signals in Plants
What is the term used to describe how…
What are the three stages involved in…
In which stage are second messengers p…
What are a plants major responses to l…
Signal transduction
Reception, transduction, and induction
Transduction
Photomorphogenesis and phototropic response
What is the term used to describe how…
Signal transduction
What are the three stages involved in…
Reception, transduction, and induction
32 terms
Water Transport and Plant Signaling
solute potential
pressure potential
negative pressure potential
positive pressure potential
also known as osmotic potential; a measure of how strongly pu…
physical force applied on a solution (can be negative or posi…
a kind of pressure potential where the solution is being "pul…
a kind of pressure potential where the solution is being push…
solute potential
also known as osmotic potential; a measure of how strongly pu…
pressure potential
physical force applied on a solution (can be negative or posi…
Cell signalling in plants and apoptosis
How is signal transduction in plants s…
what are the 2 main ways a biological…
explain the mechanisms of 3 main plant…
why does pruning encourage lateral pla…
-membrane receptor kinases and intracellular receptors... -secon…
-positive gene activation (cytokinins and ethylene)... -inactiv…
AUXINS (indoleacetic acid)... -produced in seed embryo, meristem…
remove apical bud which produces auxin, suppress apical domin…
How is signal transduction in plants s…
-membrane receptor kinases and intracellular receptors... -secon…
what are the 2 main ways a biological…
-positive gene activation (cytokinins and ethylene)... -inactiv…
37 terms
Plant Responses to Signals
How do plants respond to signals?
etiolation
de-etiolation
positive tropism
cellular receptors detect environmental changes... stimulation o…
morphological adaptations for growing in darkness
after exposure to light, the plant undergoes changes in which…
plant curves toward a stimulus
How do plants respond to signals?
cellular receptors detect environmental changes... stimulation o…
etiolation
morphological adaptations for growing in darkness
22 terms
Plants Hormones and Signals
Plants
Plant growth regulators (hormones)
Plant hormones
phototropism
- have internal signals that regulate growth and responses to…
- signalling molecules made in 1 cell but act in distant site
- Different from animals, act locally and distance and are sm…
- mediated by auxins via differential expansion... -
Plants
- have internal signals that regulate growth and responses to…
Plant growth regulators (hormones)
- signalling molecules made in 1 cell but act in distant site
41 terms
Plants Structure and Signalling
Stomata
Guard cells
Mesophyll
Roots
allow CO2 exchange between the air and the photosynthetic cel…
regulate stomata openings and closing
ground tissue in a leaf; sandwiched between upper and lower e…
Multicellular organs that anchor the plant, absorb minerals a…
Stomata
allow CO2 exchange between the air and the photosynthetic cel…
Guard cells
regulate stomata openings and closing
61 terms
Plants signals and Responses the environment
Hormone
Phytohormones
Reception
Transduction
A signaling molecule that regulates or helps coordinate some…
Plant hormones
A signal binds to a receptor in the plasma membrane.
The process of Stimuli signals being transformed into neural…
Hormone
A signaling molecule that regulates or helps coordinate some…
Phytohormones
Plant hormones
14 terms
Plant Signaling and Electromagnetic Reception
signaling pathway
auxin
cytokins
apical dominance
reception to transduction to response
stimulates cell elongation and cell wall expansion
regulate cell division in shoots and roots and modifies apica…
when the axillary meristem bud cannot produce lateral growth…
signaling pathway
reception to transduction to response
auxin
stimulates cell elongation and cell wall expansion
chapter 40 Plant signaling
what can plants sense
signal transduction
hormone
auxin
light, gravity, day length, temperature, physical touch, damage
converting stimulus into resources
signaling molecules transported through the body
migrates to shady side, stimulates cell elongation in shoot
what can plants sense
light, gravity, day length, temperature, physical touch, damage
signal transduction
converting stimulus into resources
Plant Responses to Signals
How do plants respond to signals?
etiolation
de-etiolation
tropism
cellular receptors detect environmental changes... stimulation o…
morphological adaptations for growing in darkness
after exposure to light, the plant undergoes changes in which…
any response resulting in the plant curving toward or away fr…
How do plants respond to signals?
cellular receptors detect environmental changes... stimulation o…
etiolation
morphological adaptations for growing in darkness
37 terms
Botany: Plant Signaling
Plants response to stimuli is dependen…
Plant hormones trigger what?
What are the three steps in a signal t…
What occurs during the reception step…
hormones
a signal transduction pathway
-reception ... -transduction ... -response
cell signals are detected by receptors proteins located withi…
Plants response to stimuli is dependen…
hormones
Plant hormones trigger what?
a signal transduction pathway
57 terms
Plant Reproduction and Signaling
What are the three Fs that are charact…
What are the sepals?
What part of the flower attracts the p…
What is the male reproductive part of…
Flowers, *f*ruits, and double fflowers, *f*ruits, and double *f*ertilization
The protecting leaves of the flower.
The petals.
The stamen.
What are the three Fs that are charact…
Flowers, *f*ruits, and double fflowers, *f*ruits, and double *f*ertilization
What are the sepals?
The protecting leaves of the flower.
Plant Hormones & Signals
plant hormones ("=plant growth regulat…
Drought stress
Cold stress
Flooding Stress
act locally as well as at distance, and are small organic com…
leads to closing of stomata, synthesis of osmolytes to reduce…
responses involves synthesis of cryoprotective metabolites (p…
leads to anoxia in roots - activation of non-oxgenic metaboli…
plant hormones ("=plant growth regulat…
act locally as well as at distance, and are small organic com…
Drought stress
leads to closing of stomata, synthesis of osmolytes to reduce…
11 terms
Plant Responses to Signals
auxin
cytokinins
gibberellins
abscisic acid
stem elongation
cell division and growth
seeds and bud germination
check all other hormone
auxin
stem elongation
cytokinins
cell division and growth
14 terms
Plant hormones and signals
Plant hormones
Phototropism
Coleoptiles
Bioassy
- act locally as well as at a distance... - are small organic co…
mediated by auxins via differential expansion of cells
covers of shoots in grass embryos... - bend toward light... - tip s…
using a biological test to measure a substance
Plant hormones
- act locally as well as at a distance... - are small organic co…
Phototropism
mediated by auxins via differential expansion of cells
Ch.40 - Plant Signaling
What is ethylene?
In general, ABA does what?
When soil is dry, what signals the sto…
What do auxin stimulate? What does it…
Causes things to age. Make fruit ripen, and flowers / leaves…
Shuts systems down
Abscisic Acid. Root to shoot.
Cell elongation in the shoot. Cell elongation in the root.
What is ethylene?
Causes things to age. Make fruit ripen, and flowers / leaves…
In general, ABA does what?
Shuts systems down
Weak 11 - Plant Signaling
Plants gather, process, and respond to…
are pressure and gravity signals for p…
signal transduction
when does a receptor protein change sh…
1. receptor cell transduces signal... 2. hormone signal released…
yes
when receptor proteins change shape in response to a stimuli…
in response to an external stimuli
Plants gather, process, and respond to…
1. receptor cell transduces signal... 2. hormone signal released…
are pressure and gravity signals for p…
yes
42 terms
plant responses to signals
signal transduction
etiolation
transduction includes
what does a kinase do
environment stimulus or horomone-->reception-->transduction--…
growing in the dark
2nd messengers (cGMP, CA2+ etc) and protein kinases and prote…
adds a phosphate
signal transduction
environment stimulus or horomone-->reception-->transduction--…
etiolation
growing in the dark
Plant signal transduction and Plant Biotech
what are the 4 components of signal tr…
what a re secondary messengers? what d…
what are three ways plants detect ligh…
how does phytochrome transduce light d…
1. environmental or physiological signal... 2. receptor... 3. signa…
they are intracellular, amplify and transduce responses past…
1. phytochrome - red/far red light cytoplasmic protein... 2. ph…
recieves light in cytoplasm, sends to nucleus, translocate >…
what are the 4 components of signal tr…
1. environmental or physiological signal... 2. receptor... 3. signa…
what a re secondary messengers? what d…
they are intracellular, amplify and transduce responses past…
Plant Cell Signals
Stages To Cell Signaling
Auxins
Auxin - Responsive Genes
Auxin - Transport
Receptor Activation... Signal Transduction via Secondary Messeng…
"master" hormone produced in the apical meristems and young l…
Expression of these genes is promoted by Auxin.
Auxin mainly flows in a downward fashion from the shoots to t…
Stages To Cell Signaling
Receptor Activation... Signal Transduction via Secondary Messeng…
Auxins
"master" hormone produced in the apical meristems and young l…
exam 3 (plant signals)
tropisms
photo
gravi
thigomo
growth due to stimulus
growth by light
down + (root)... up - (stem)
mechanical (tendrils)
tropisms
growth due to stimulus
photo
growth by light
44 terms
Plant responses to environmental signals
What are the challenges of being a pla…
What is the pathway for a response to…
What is the generalized plant response…
What is reception?
can't move much... Bottom of the food chain
Plants have parallel/similar pathway... Reception... Transduction... R…
reception to transduction to response (hormone or environment…
Internal and external signals are detected by receptors, prot…
What are the challenges of being a pla…
can't move much... Bottom of the food chain
What is the pathway for a response to…
Plants have parallel/similar pathway... Reception... Transduction... R…
34 terms
Plant Response to Signals
Plant responses to external signals ar…
What is phototropism?
What part of plant perceives signal? H…
What mediates phototropism? Is it mobi…
Internal signals, like hormones
movement towards light
light signal is perceived by the tip... plant with tip cut off,…
auxin, yes; it can diffuse into an agar block
Plant responses to external signals ar…
Internal signals, like hormones
What is phototropism?
movement towards light
Biology Final Cell Signaling & Plants
What are the two major groups of plants
What is the term for haploid generatio…
What is the term for the diploid gener…
What is the major group of nonvascular…
Nonvascular, Vascular
Gametophytes
Sporophytes
Bryophyta
What are the two major groups of plants
Nonvascular, Vascular
What is the term for haploid generatio…
Gametophytes
Transport around the plant:Signals
How can the effect of a signal vary?
How are changes in morphology and chem…
Describe transcription factors in plants
Give examples of plant peptide hormones
Machinery upstream of signal conserved but downstream machine…
1) slow, irreversible change in development... 2) rapid and reve…
Nuclear localisation signal restricts them to nucleus but som…
Very few, very different but very similar receptors. CLV3-con…
How can the effect of a signal vary?
Machinery upstream of signal conserved but downstream machine…
How are changes in morphology and chem…
1) slow, irreversible change in development... 2) rapid and reve…
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