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Epigenetic Stress Memory and Adaptive Responses in Plants: Metabolic Reprogramming, Organelle Signalling and Systemic
1Department of Horticulture and Life Science, Yeungnam University, Gyeongsan, Republic of Korea.
Plant, Cell & Environment
|July 21, 2026
Summary
Plants can remember past environmental stresses through epigenetic and metabolic changes, improving their resilience. This stress memory, involving molecular imprints and organelle signaling, enhances future adaptation and crop performance.
Area of Science:
- Plant biology
- Environmental stress response
- Epigenetics
Background:
- Plants face recurring environmental stresses, requiring more than immediate responses for adaptation.
- Prior stress exposure creates lasting molecular, metabolic, and physiological changes, leading to stress memory and plasticity.
- Epigenetic regulation (e.g., DNA methylation, histone modifications) and metabolic reprogramming are key to these persistent states.
Purpose of the Study:
- To synthesize current knowledge on plant stress memory and adaptive plasticity.
- To propose a unified framework integrating epigenetic, metabolic, organelle, and systemic signaling mechanisms.
- To identify limitations and future research directions in understanding plant stress memory.
Main Methods:
- Literature review and synthesis of existing research on plant stress responses.
- Analysis of epigenetic mechanisms, metabolic reprogramming, organelle signaling, and systemic communication.
- Discussion of theoretical frameworks for stress memory and adaptive plasticity.
Main Results:
- Plant stress memory involves a complex interplay of epigenetic modifications, metabolic adjustments, organelle communication (chloroplasts, mitochondria, ER), and whole-plant signaling.
- Distinguishing between transient acclimation and true memory, and understanding the balance between maintaining and resetting stress-induced states are crucial.
- Significant gaps exist in defining stress memory, validating epigenetic roles, integrating molecular data with phenotypes, and translating findings to crop improvement.
Conclusions:
- Plant resilience to fluctuating environments relies on the integration of stress memory, metabolic plasticity, organelle signaling, and systemic acclimation.
- Further research is needed to address current limitations and translate the understanding of stress memory into practical applications for crop enhancement.
Keywords:
adaptive plasticityepigenetic regulationmetabolic reprogrammingnon‐coding RNAsplant stress memoryretrograde signallingsystemic acquired acclimationMore Related Videos
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