Comparison of Seasonally Adaptive Metabolic Response Strategies of Two Acer Species

Acer L. species are well known as ornamental trees due to their colourful leaves in autumn season. pictum subsp. mono (Maxim.) H. Ohashi (APM) and tataricum ginnala (Maximowicz) Wesmael (ATG) form with completely different colours autumn, yellow red, respectively. In response this phenomenon, we investigated the metabolic regulation of APM ATG seasons by combining metabolomics, ionomics, antioxidant system pigment content. The results showed that process senescence discolouration exists species, regulatory strategy shows specificity. Compared green leaves, accumulation primary metabolites was extensively depleted, chlorophyll content decreased, enzymes C6C3C6 type phenolic compounds synergistically enhanced capacity plants cope senescence. Carotenoid raised, which together (chlorogenic acid, rutin) provides a colour. is consistent APM, while sugar increases. increased anthocyanin explains transition from red colour, may be accompanied combined effect elements (Fe, Zn, Mn) isoflavones. This study reference for colouration mechanism seasonal adaptation species.