Plant Stress Granules: Trends and Beyond

Area of Science:

• Plant Biology
• Cellular Biology
• Biochemistry

Background:

• Stress granules (SGs) are dynamic, membrane-less condensates formed via liquid-liquid phase separation (LLPS) in response to cellular stress.
• SGs possess a core-shell architecture, with the core containing conserved proteins essential for assembly and the shell housing variable components specific to cell type and species.
• SG assembly is linked to translation stalling, playing critical roles in cellular adaptation, recovery, signaling, and metabolic regulation.

Purpose of the Study:

• To review and synthesize current knowledge on plant stress granules (SGs).
• To discuss the composition, organization, dynamics, and regulation of plant SGs.
• To explore potential connections between plant SGs and those in yeast and mammals.

Main Methods:

• Literature review compiling recent advancements in plant SG research.
• Discussion of genetic studies and adapted techniques like affinity capture coupled with multi-omics analyses.
• Comparative analysis of SGs across different model organisms (plants, yeast, mammals).

Main Results:

• Plant SG research is an emerging field, building on established knowledge from yeast and mammals.
• Genetics and multi-omics approaches are enhancing understanding of plant SG composition.
• Plant SGs share conserved core components but exhibit species-specific shell compositions.

Conclusions:

• Plant SGs are crucial for cellular adaptation to stress, with dynamics that can impact homeostasis.
• Further research is needed to fully elucidate plant SG biology and its cross-species conservation.
• Comparative studies promise a comprehensive understanding of SG functions across eukaryotes.