Review synthesizes transcriptional regulation of secondary metabolic pathways in plants under abiotic stresses

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Frontiers in Medicine Published May 19, 2026 Medically reviewed May 19, 2026 DOI ↗ By Dr. Julia Lee, PhD · Oncology, Genomics & Drug Development

Key Takeaway

Note that this review discusses transcriptional regulation in plants under abiotic stresses without specific quantitative data.

This narrative review focuses on transcriptional regulation of secondary metabolic pathways and metabolomics-driven discoveries within the context of plants exposed to abiotic stresses. The scope includes drought, salinity, extreme temperatures, and heavy metal toxicity. The authors explore how these factors influence adaptive resilience, tolerance, and the development of stress-resilient crops.

The review notes that key details regarding sample size and setting were not reported. Consequently, specific quantitative data or adverse event rates are unavailable for clinical or agricultural application. The primary outcome centers on transcriptional regulation of secondary metabolic pathways and metabolomics-driven discoveries.

Secondary outcomes include adaptive resilience, tolerance, and the development of stress-resilient crops. The authors highlight the practice relevance of developing stress-resilient crops in the era of climate change. However, the absence of reported safety data and specific study populations limits direct translation to standard agricultural practices.

The review does not provide pooled effect sizes or causal conclusions. It serves as a qualitative synthesis of current knowledge rather than a primary trial. Readers should interpret these findings as a broad overview of mechanisms and potential strategies for crop improvement under changing environmental conditions.

Study Details

Study typeSystematic review

EvidenceLevel 1

PublishedMay 2026

View Original Abstract ↓

Plants are continuously exposed to diverse abiotic stresses such as drought, salinity, extreme temperatures, and heavy metal toxicity, each of which disrupts cellular homeostasis and reactive oxygen species (ROS) generation and impairs development. To survive under these adverse conditions, plants activate a complex network of transcriptional regulators that remodel primary and secondary metabolic pathways. These regulatory cascades, involving transcription factors such as AP2, WUSCHEL, MYB, bHLH, WRKY, and NAC, orchestrate the biosynthesis of key secondary metabolites, including phenolics, flavonoids, terpenoids, and alkaloids, that function as antioxidants, osmoprotectants, and signaling molecules. Advances in metabolomics have provided deeper insights into stress-induced metabolic reconfigurations, enabling high-resolution profiling of pathway metabolic fluxes and revealing novel metabolites associated with adaptive resilience and tolerance. Alongside engineering abiotic stress resistance, nanobiological approaches have emerged as innovative strategies to modulate and remediate transcriptional responses and secondary metabolite production. This review comprehends current understanding of transcriptional regulation of secondary metabolism under abiotic stress, integrates metabolomics-driven discoveries, and highlights the potential of metabolites and metabolomics-based tools to augment plant adaptive mechanisms. Together, these interconnected perspectives offer a comprehensive framework for developing stress-resilient crops in the era of climate change.