biostudies-literatureUnknown13Yang X<i>Leersia japonica</i> is a perennial Gramineae grass that is dominant in shallow wetlands of the Yihe and Shuhe River Basin, North China. Previous studies have shown that <i>L. japonica</i> recovers early (March), tillers strongly, and has an excellent ability to purify sewage in spring. This early revival might play a vital role in water purification function; however, whether the plant benefits from the physiological activities during senescence remains unclear. Therefore, in this study, an experiment was conducted during the winter of 2016 and in the following spring. Morphology (height, biomass, root morphology), physiology (root vitality, malondialdehyde [MDA], superoxide dismutase [SOD]), substance contents (soluble sugar, soluble protein) and substance transportation (activity of Frontiers in plant science996587https://www.ebi.ac.uk/biostudies/studies/S-EPMC9608780biostudies-literatureSubstance accumulation of a wetland plant, <i>Leersia japonica</i>, during senescence in the Yihe and Shuhe River Basin, North China.PMC9608780Yang XZeng BLi ZWang GLei SfalseSubstance accumulation of a wetland plant, <i>Leersia japonica</i>, during senescence in the Yihe and Shuhe River Basin, North China.<i>Leersia japonica</i> is a perennial Gramineae grass that is dominant in shallow wetlands of the Yihe and Shuhe River Basin, North China. Previous studies have shown that <i>L. japonica</i> recovers early (March), tillers strongly, and has an excellent ability to purify sewage in spring. This early revival might play a vital role in water purification function; however, whether the plant benefits from the physiological activities during senescence remains unclear. Therefore, in this study, an experiment was conducted during the winter of 2016 and in the following spring. Morphology (height, biomass, root morphology), physiology (root vitality, malondialdehyde [MDA], superoxide dismutase [SOD]), substance contents (soluble sugar, soluble protein) and substance transportation (activity of 2022-01-01T00:00:00Z20222025-04-22T02:08:35.15Z2025-04-05T20:13:00.853ZS-EPMC96087803631112310.3389/fpls.2022.996587