文献类型：期刊文献

英文题名：Nitrogen addition and clonal integration alleviate water stress of dependent ramets of Indocalamus decorus under heterogeneous soil water environment

作者：Guo, Zi-Wu[1] Hu, Jun-Jing[2] Chen, Shuang-Lin[1] Li, Ying-Chun[1] Yang, Qing-Ping[1] Cai, Han-Jiang[3]

第一作者：郭子武

通信作者：Guo, ZW[1];Chen, SL[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Peoples R China;[2]Hangzhou Acad Forestry, Hangzhou 310028, Zhejiang, Peoples R China;[3]China Natl Bamboo Res Ctr, Hangzhou 310012, Zhejiang, Peoples R China

年份：2017

卷号：7

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000396650400001)】；

基金：This study was funded by the Natural Science Foundation of Zhejiang Province (No. LY13C160001), and the Fundamental Research Funds for Central Non-Profit Research Institutes (CAFYBB2016SY007). We acknowledge Prof. Xing-Cui Ding and Fei-Hai Yu for the help during the paper formation and revision. The anonymous reviewers provided positive feedback on a previous draft.

语种：英文

摘要：Water and nitrogen are two of the most important factors for plant growth and development. However, little is known about effects of N on water translocation between connected bamboo ramets. We performed experiment connected Indocalamus decorus ramets in adjacent pots with different soil water contents and three N levels. We determined antioxidase activities, concentration of osmotic adjustment products, O-2.(-), MDA and photosynthetic pigments, and electrolyte leakage rate in paired unit. When N supply to supporting ramets increased, their electrolyte leakage rates and contents of O-2.(-) and MDA significantly increased, while antioxidase activities and contents of osmotic adjustment products and photosynthetic pigments in connected dependent ramets increased markedly as their electrolyte leakage rates and contents of O-2.(-) and MDA decreased greatly. When N addition to dependent ramets increased, antioxidant enzyme activity and contents of osmotic adjustment products and photosynthetic pigments decreased in both ramets, but electrolyte leakage rates and O-2.(-) and MDA contents increased significantly. Therefore, N addition to either supporting or dependent ramets can improve water integration among I. decorus ramets. N addition to supporting ramets promotes water translocation and alleviates water stress of dependent ramets, but N addition to dependent ramets exacerbates drought stress damage to dependent ramets.