文献类型：期刊文献

英文题名：Responses in shoot elongation, carbohydrate utilization and growth recovery of an invasive species to submergence at different water temperatures

作者：Ye, Xiao Qi[1] Zeng, Bo[2] Meng, Jin Liu[1] Wu, Ming[1] Zhang, Xiao Ping[2]

第一作者：叶小齐

通信作者：Zhang, XP[1]

机构：[1]Chinese Acad Forestry, Inst Subtrop Forestry, Res Stn Hangzhou Bay Wetlands Ecosyst, Natl Forestry Bur, Fuyang, Peoples R China;[2]Southwest Univ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Chongqing Key Lab Plant Ecol & Resources Three Go, Minist Educ,Sch Life Sci, Chongqing, Peoples R China

年份：2018

卷号：8

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85040450797);WOS:【SCI-EXPANDED(收录号:WOS:000419670000030)】；

基金：This work was supported by the Special Funds for Basic Science Research of Central Public Research Institutes (grant number CAFYBB2016SY010), the National Natural Science Foundation of China (grant number 31770578, 31400480) and National Key Research and Development Program of China (2017YFC050530401).

语种：英文

摘要：Widely distributed amphibious exotic plant species may respond plastically to water temperatures when submerged. Alternanthera philoxeroides, a highly flood-tolerant species, originates from tropical regions and has successfully invaded temperate regions. The wide distribution of this species suggests it can respond to flooding at different water temperatures. In this study, the plastic responses of A. philoxeroides plants to submergence at water temperatures of 10 degrees C, 20 degrees C and 30 degrees C were investigated. The A. philoxeroides plants had large pools of non-structural carbohydrates, which were readily mobilized upon submergence. Submergence hindered biomass accumulation and decreased the carbohydrate content level and respiration rate (P < 0.05). Water temperature had remarkable effects on shoot elongation, carbohydrate utilization and recovery growth. With decreasing water temperature, the respiration rate was lower and carbohydrate content decreased more slowly, but the post-submergence biomass accumulation was faster (P < 0.05), indicating a beneficial effect of low water temperature for recovery. However, high water temperatures accelerated shoot elongation (P < 0.05), which benefitted the submerged plants more if contact with air was restored. These results suggest that the species can respond to different water temperatures plastically, which may provide hints for its invasion success in regions with diverse climates.