ArticleScientific reports2025
Heat stress-induced metabolomic shifts in chickpea (Cicer arietinum L.) flowers insights from contrasting genotypes.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Seed metabolomic profiling of contrasting mung bean (Vigna radiata) genotypes under heat stress.Scientific reports · 2026Article
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7 authors.
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Abstract
Chickpea (Cicer arietinum L.), a vital cool-season pulse crop, experiences significant yield losses when exposed to heat stress during its reproductive stages, a vulnerability exacerbated by weather extremes. Chickpea plants synthesize numerous metabolites when subjected to heat stress; however, the underlying metabolomic mechanisms of heat tolerance remain poorly understood. In this study, we employed widely targeted metabolomics to identify key metabolites and potential biomarkers in the flower buds of two contrasting chickpea genotypes: the heat-tolerant PI518255 and the heat-sensitive PI598080. The tolerant genotype showed improved chlorophyll index, photochemical efficiency, antioxidant activity, along with low electrolyte leakage and malondialdehyde content. In contrast, the sensitive genotype exhibited low chlorophyll index, photochemical efficiency and low antioxidant activity, and high electrolyte leakage and malondialdehyde content, under heat stress conditions (35/20 °C day/night). Volcano plot analysis identified 86 up-regulated and 230 down-regulated metabolites in response to heat stress. Heatmap analysis revealed that elevated levels of specific flavonoids, phenolic acids, lignans, coumarins, alkaloids, quinones, and terpenoids characterized the heat-tolerant genotype, suggesting their potential as biomarkers for screening heat stress tolerance. KEGG enrichment and pathway analysis highlighted isoflavonoid biosynthesis, flavonoid metabolism, lysine degradation, and butanoate metabolism as key pathways affected by heat stress. Future targeted metabolomics studies may provide deeper insights into the biochemical mechanisms underlying chickpea acclimation to heat stress.
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