About this Research Topic
Plants being sessile, rely heavily on intricate hormonal signaling to regulate ontogeny and responses to stress. Phytohormones, including auxins, gibberellins, cytokinins, ethylene, abscisic acid (ABA), jasmonates, salicylic acid and strigolactones, play pivotal roles. Each hormone influences various aspects of plant physiology, and their interactions involves extensive crosstalk essential for plant survival. Hormonal signal transduction converts external signals into cellular responses. Perception begins with receptor proteins, often located on the cell surface or within the cell. Like TIR1/AFB receptors which perceives auxins, and PYR/PYL/RCAR receptors which binds ABA. Hormone binding to receptors often triggers the production of secondary messengers, such as cAMP, Ca2+, and ROS. These messengers amplify the signal and activate downstream components. Protein Kinases and Phosphatases modulate the activity of target proteins through phosphorylation and dephosphorylation. Transcription Factors, the final step in signal transduction, often involves the activation or repression of transcription factors, which regulate the expression of hormone-responsive genes. Examples include ARFs for auxin and ABI5 for ABA. Understanding these complex interactions and signal transduction pathways is crucial for advancing our knowledge of plant biology and improving agricultural practices.
How do hormone signaling and crosstalk function in relation to plant ontogeny and stress responses? How conserved are these processes across different plant species, and what aspects are unique? Hormonal signaling pathways exhibit significant spatial and temporal variations at the cellular level, which play critical roles in regulating plant development and responses to stress. These variations in hormone levels and signaling components impact ontogeny and stress responses in complex ways that are not yet fully understood.
Hormonal signaling pathways often exhibit redundancy, where multiple hormones or signaling components perform similar functions, making it challenging to pinpoint specific roles and interactions. This redundancy needs further elucidation. Additionally, environmental factors such as temperature, light, and soil conditions profoundly influence hormone signaling, adding another layer of complexity.
By addressing these challenges and leveraging recent advances in research, we can significantly enhance our understanding of hormonal interactions and signal transduction in plant ontogeny and stress responses, ultimately leading to innovative strategies for improving crop performance.
We will include contributions on the following, but not limited to, themes:
- Hormonal signaling and crosstalk, including multi-omics studies and mathematical modeling approaches
- Studies elucidating the spatiotemporal dynamics of hormones, utilizing fluorescent reporters and synthetic biosensors to visualize hormone distribution and signaling events in real-time. This also includes the implementation of single-cell RNA sequencing and other single-cell technologies to study signaling at the cellular level
- Redundancy and specificity studies on hormones, using gene-editing technologies and mutant screening to better understand the roles of individual hormones and signaling components
- Environmental variability studies and their impact on hormone crosstalk and signal transduction. This may involve automated high-throughput phenotyping to screen large populations of plants for traits related to hormone signaling and stress responses, as well as complementing controlled studies with field research to understand how laboratory findings translate to natural conditions
- Synthetic biology approaches to engineer pathways for improved stress resilience and ontogeny
How do hormone signaling and crosstalk function in relation to plant ontogeny and stress responses? How conserved are these processes across different plant species, and what aspects are unique? Hormonal signaling pathways exhibit significant spatial and temporal variations at the cellular level, which play critical roles in regulating plant development and responses to stress. These variations in hormone levels and signaling components impact ontogeny and stress responses in complex ways that are not yet fully understood.
Hormonal signaling pathways often exhibit redundancy, where multiple hormones or signaling components perform similar functions, making it challenging to pinpoint specific roles and interactions. This redundancy needs further elucidation. Additionally, environmental factors such as temperature, light, and soil conditions profoundly influence hormone signaling, adding another layer of complexity.
By addressing these challenges and leveraging recent advances in research, we can significantly enhance our understanding of hormonal interactions and signal transduction in plant ontogeny and stress responses, ultimately leading to innovative strategies for improving crop performance.
We will include contributions on the following, but not limited to, themes:
- Hormonal signaling and crosstalk, including multi-omics studies and mathematical modeling approaches
- Studies elucidating the spatiotemporal dynamics of hormones, utilizing fluorescent reporters and synthetic biosensors to visualize hormone distribution and signaling events in real-time. This also includes the implementation of single-cell RNA sequencing and other single-cell technologies to study signaling at the cellular level
- Redundancy and specificity studies on hormones, using gene-editing technologies and mutant screening to better understand the roles of individual hormones and signaling components
- Environmental variability studies and their impact on hormone crosstalk and signal transduction. This may involve automated high-throughput phenotyping to screen large populations of plants for traits related to hormone signaling and stress responses, as well as complementing controlled studies with field research to understand how laboratory findings translate to natural conditions
- Synthetic biology approaches to engineer pathways for improved stress resilience and ontogeny
Keywords: plant ontogeny, hormonal interactions, signal transduction, synthetic biology, signaling pathways
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.
