ArticleFrontiers in plant science2026
Diurnal asymmetric warming promotes the growth of the perennial species
Article in Frontiers in plant science, 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
Introduction: Global warming exhibits asymmetric patterns (differential day-night warming rates), yet its effects on early plant regeneration and physiological adaptation remain unclear. This study aimed to investigate the effects of different warming regimes on seedling emergence, growth, and physiological traits of Methods: A controlled experiment was conducted with symmetric warming, daytime warming (asymmetric), nocturnal warming (asymmetric), and a control treatment. Measurements included seedling emergence time and final emergence percentage, morphological traits (plant height, root length, leaf area), biomass allocation (stem dry mass, root fresh mass, root-shoot ratio, specific root length, specific leaf area), and physiological indices (antioxidant system activity). Results: Emergence: Symmetric warming significantly advanced the onset of emergence, but none of the warming treatments altered final emergence relative to the control. Growth: Asymmetric warming induced stronger stimulation of leaf area than nocturnal warming; excessively high night-time temperatures suppressed plant height and markedly inhibited root elongation while reducing leaf area. Symmetric warming significantly increased stem dry mass, whereas asymmetric warming produced the highest root fresh mass among all treatments. Biomass allocation: Diurnal asymmetric warming markedly shifted biomass allocation patterns and morphological characteristics; it inhibited root elongation while increasing root biomass accumulation, resulting in an elevated root-shoot ratio but reduced specific root length and specific leaf area. Physiological response: Under diurnal asymmetric warming, plants activated their antioxidant systems to mitigate oxidative damage. Discussion: Asymmetric warming (particularly diurnal asymmetry) may enhance the invasive potential of
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