ArticleBMC plant biology2025
ARGOS homolog evolution in brassicaceae and the role of BnaC6.ARGOS in conferring drought tolerance via expression-responsive localization and reduced seed porosity in rapeseed.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- A review of ARGOS-mediated regulation of plant organ size: molecular mechanisms, environmental interactions, and agricultural implications.Functional & integrative genomics · 2026Review
- ABA Signaling De-Repression Coordinates With Cytokinin to Drive Large Petal Formation in Brassica napus.Physiologia plantarumArticle
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6 authors.
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Abstract
backgroundThe ARGOS/OSR gene family regulates organ size and abiotic stress responses in plants. While well-characterized in model organisms like Arabidopsis thaliana, its functional significance in rapeseed (Brassica napus), a globally vital oilseed crop, lacks comprehensive study.
resultsGenome-wide analysis identified 19 OSR members in rapeseed, phylogenetically grouped into ARGOS, ARL1, and ARL2/3. All members possess the conserved OSR domain and display subgenome asymmetry, with 11 and 8 members located on the An and Cn subgenomes, respectively. Evolutionary analysis indicated strong purifying selection (mean Ka/Ks = 0.2772-0.3211), with greater selective pressure acting on the Cn subgenome. Crucially, the key protein BnaC6.ARGOS exhibited expression-level-dependent dual subcellular localization plasma membrane localization under native conditions versus endoplasmic reticulum localization upon overexpression. Expression profiling revealed exceptionally high expression of BnaC6.ARGOS in anthers (FPKM > 4,700). Its promoter is enriched with stress-responsive cis-elements. Transgenic overexpression of BnaC6.ARGOS (ARGOS-OE) significantly enhanced seed drought tolerance. This was achieved by reducing seed coat porosity and thickening cell walls, resulting in a threefold increase in germination rates compared to wild-type (WT) under drought stress (p < 0.05).
conclusionOur findings demonstrate that BnaC6.ARGOS modulates seed coat structural development and drought resistance, underscoring its potential as a target for engineering stress-resilient rapeseed. This study establishes a foundation for functional genomics research on the OSR gene family in crops.
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