文献类型：期刊文献

英文题名：Plant Growth and Nutrient Composition of Shrub and Arbor Willows Grown in Cu-Contaminated Flooded Soil

作者：Cao, Yini[1] Xiao, Jiang[1] Chen, Jie[2] Li, Xiaogang[1] Shi, Jiuxi[1] Chen, Guangcai[1]

第一作者：Cao, Yini

通信作者：Shi, JX[1];Chen, GC[1]|[a0005413acfe1d8f3f021]史久西;[a000551c9abd7c3960d59]陈光才;

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]China Construct Fifth Engn Div Co Ltd, Changsha 410004, Peoples R China

年份：2022

卷号：13

期号：7

外文期刊名：FORESTS

收录：;EI(收录号：20222612304607);Scopus(收录号：2-s2.0-85132992134);WOS:【SCI-EXPANDED(收录号:WOS:000831999700001)】；

基金：This work was supported by the Fundament Research Funds of CAF (Grant No. CAFYBB201 9SZ001), the Natural Science Foundation of China (Grant No. 31770653).

语种：英文

外文关键词：willow; phytoremediation; nutrients; photosynthesis; flooding

摘要：Flooding can adversely worsen metal-contaminated soil and influence phytoremediation efficiency; thus, it is crucial to explore the eco-physiological responses of plants to the combined stress of metals and flooding. Here, the plant growth, photosynthesis, and nutrient composition in the arbor willow (Salix jiangsuensis 'J172') and shrub willow (Salix integra 'Yizhibi') were studied using a pot experiment with Cu-contaminated soil (239.5 mg center dot kg(-1)) under flooded versus non-flooded conditions. S. integra showed a larger bioconcentration factor (BCF) than S. jiangsuensis in both treatments. Flooding markedly decreased the BCFs while obviously increasing the translocation factor in the two willows (p < 0.05). Flooding enhanced the leaf C:P and N:P ratios while significantly decreased root C:P and N:P ratios, compared to the non-flooded condition. The shrub willow exhibited better tolerance to flooding, with little alteration in biomass and photosynthetic rate, and showed greater potential Cu accumulation capacity, even though its total biomass was significantly lower than that of the arbor willow. Our study also helps further understanding of nutrient balance and stoichiometry of willows in response to flooding and Cu contamination, promoting the management of Cu-contaminated flooded soils.