Podcast
Questions and Answers
______ are sessile organisms. Can perceive environmental cues (light, mechanical, chemical) and respond through different ways (elongation during etiolation, jasmonic and salicylic acid production during herbivory, secondary metabolites). SIGNAL TRANSDUCTION PATHWAY - One or more sequences of biochemical reactions connecting the stimulus with a cellular response. - Coordinate gene expression through transcription factors with environmental conditions and development. - Involves secondary messengers, hormones, protein kinases, phosphatases (for amplification of initial signal). - Responsible for plant immunity against pathogens and physical damages. Parts Involved: ▪ Receptors – cell surface/cell membrane; recognize or bind the stimuli, triggering a signal cascade (through ion-, protein-, or enzymelinked systems). ▪ Transduction Proteins, Secondary Messengers – pass through nuclear membrane and deliver message to transcription factors. ▪ Transcription Factors – attach to the DNA segment needed. ▪ Nucleus – where the corresponding gene for the response will be transcribed and translated to a protein or other gene. o Sometimes, it is not just a single gene product, carried out to develop morphological or developmental change. Signal transduction in ______: ▪ Etiolation: yellowing and elongation of the hypocotyl of seedlings when grown in the dark.
______ are sessile organisms. Can perceive environmental cues (light, mechanical, chemical) and respond through different ways (elongation during etiolation, jasmonic and salicylic acid production during herbivory, secondary metabolites). SIGNAL TRANSDUCTION PATHWAY - One or more sequences of biochemical reactions connecting the stimulus with a cellular response. - Coordinate gene expression through transcription factors with environmental conditions and development. - Involves secondary messengers, hormones, protein kinases, phosphatases (for amplification of initial signal). - Responsible for plant immunity against pathogens and physical damages. Parts Involved: ▪ Receptors – cell surface/cell membrane; recognize or bind the stimuli, triggering a signal cascade (through ion-, protein-, or enzymelinked systems). ▪ Transduction Proteins, Secondary Messengers – pass through nuclear membrane and deliver message to transcription factors. ▪ Transcription Factors – attach to the DNA segment needed. ▪ Nucleus – where the corresponding gene for the response will be transcribed and translated to a protein or other gene. o Sometimes, it is not just a single gene product, carried out to develop morphological or developmental change. Signal transduction in ______: ▪ Etiolation: yellowing and elongation of the hypocotyl of seedlings when grown in the dark.
Plants
Study Notes
Plant Signal Transduction Pathway
- Plants are sessile organisms that can perceive environmental cues (light, mechanical, chemical) and respond through different ways.
Signal Transduction Pathway
- A sequence of biochemical reactions connecting the stimulus with a cellular response.
- Coordinates gene expression through transcription factors with environmental conditions and development.
- Involves secondary messengers, hormones, protein kinases, and phosphatases for amplification of the initial signal.
Components of Signal Transduction Pathway
- Receptors: cell surface/cell membrane proteins that recognize or bind the stimuli, triggering a signal cascade.
- Transduction Proteins and Secondary Messengers: pass through the nuclear membrane and deliver the message to transcription factors.
- Transcription Factors: attach to the DNA segment needed for the response.
- Nucleus: where the corresponding gene for the response will be transcribed and translated to a protein or other gene product.
Signal Transduction in Plants
- Etiolation: a response to darkness, characterized by yellowing and elongation of the hypocotyl of seedlings.
- Signal transduction pathways play a crucial role in plant immunity against pathogens and physical damages.
- Response to environmental cues can lead to morphological or developmental changes, often involving multiple gene products.
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Description
Test your knowledge of signaling mechanisms in plants with this quiz. Explore how plants perceive and respond to environmental cues through processes like elongation, hormone production, and secondary metabolite synthesis. Challenge yourself to understand the signal transduction pathway and biochemical reactions involved in plant responses.
