ArticlePlanta2026
Multi-omics analyses suggest that tissue-specific calcium signaling is involved in the adaptation of Zostera marina L. to high salinity.
Article in Planta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
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conclusionThrough integrated transcriptomic and metabolomic analyses, we systematically assessed the role of calcium signaling pathways in adaptation of eelgrass to high-salinity environments. Phenylpropanoid biosynthesis is a crucial metabolic pathway through which calcium signaling involves to salt adaptability of eelgrass. There is a close crosstalk between calcium signaling and nitric oxide in eelgrass. Zostera marina L. (eelgrass), a representative marine submerged angiosperm, exhibits unique traits for salt adaptation. In previous studies, we found that the calcium signaling pathway in eelgrass was activated under high salt conditions, but the specific role of it in adaptation of eelgrass to salt environments is still unclear. In this study, we utilized ethylene glycol tetraacetic acid to inhibit calcium signaling, thereby to find differentially expressed genes and differential accumulated metabolites in eelgrass. Through integrated transcriptomic and metabolomic analyses, we systematically assessed the role of calcium signaling pathways in adaptation of eelgrass to high-salinity environments. Specifically, calcium signaling in roots adjusts homeostasis through cell wall regulation and plant hormone signaling pathways, contributing to osmotic regulation and antioxidant defenses; In stems, calcium signaling primarily mediates ion transport and osmotic regulation; In leaves, the antioxidant defense system would be activated as a compensatory mechanism to alleviate salt stress damage after inhibiting calcium signaling. Notably, phenylpropanoid biosynthesis is a crucial metabolic pathway through which calcium signaling is involved in salt adaptability of eelgrass. Additionally, there is a close crosstalk between calcium signaling and nitric oxide in eelgrass: calcium signaling regulates the expression of nitric oxide synthase, while nitric oxide also influences the expression of several calcium sensor proteins during calcium signaling transduction. These studies provide valuable insights into the role of calcium signaling in eelgrass, contributing to the understanding of the evolutionary processes of marine higher plants, and offering a theoretical foundation for the improved cultivation of salt-tolerant terrestrial crops.
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