ArticleBMC genomics2025
Integrated transcriptomic, metabolomic and lipidomic analyses uncover the crucial roles of lipid metabolism pathways in oat (Avena sativa) responses to heat stress.
Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Mechanisms and Advances in Plant Lipid Regulatory Responses Under Biotic and Abiotic Stress.Genes · 2026Review
- Deciphering lipid biosynthesis and regulation in Isatis species through combined metabolomic and transcriptomic analysis.BMC plant biology · 2026Article
- Genome-wide identification and stress-responsive expression analysis of the Actin-Depolymerizing Factor (ADF) gene family in Avena sativa L.BMC plant biology · 2026Article
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Authors and funding
8 authors.
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Abstract
backgroundOat (Avena sativa), an economically important cereal crop globally, is highly vulnerable to high-temperature stress, challenging its geographic distribution and grain production. However, the mechanisms underlying oat's response to heat stress remain pooly understood.
resultsA time-course transcriptome revealed significant enrichment in lipid metabolism pathways during heat stress, which was corroborated by metabolomic findings. Integrated co-expression network analysis and KEGG enrichment further underscored the critical role of lipid metabolism in oat's adaptive response to heat stress. Comprehensive lipidomic profiling of heat-stressed oat seedlings demonstrated a substantial increase in the proportion of neutral lipids, suggesting an evolutionarily conserved protective strategy. Synergistic transcriptional responses indicated that heat-induced triacylglycerol (TAG) accumulation primarily originated from extensive membrane lipid turnover rather than de novo fatty acid (FA) synthesis, with the Kennedy pathway serving as the dominant route for TAG production. Enhanced phospholipid hydrolysis, acyl editing, and endoplasmic reticulum-localized FA desaturation collectively contributed to TAG enrichment in polyunsaturated FAs. Additionally, elevated levels of phosphatidylglycerol (PG) and phosphatidylinositol (PI) in oat may confer adaptive benefits under heat stress.
conclusionsThis study demonstrates that lipid metabolism critically regulates heat stress response in oat. The findings provide valuable target genes for genetic improvement in enhancing oat thermotolerance.
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