文献类型：期刊文献

英文题名：Effects of drought on leaf carbon source and growth of European beech are modulated by soil type

作者：Liu, Jian-Feng[1,2] Arend, Matthias[2,3] Yang, Wen-Juan[1] Schaub, Marcus[2] Ni, Yan-Yan[1] Gessler, Arthur[2,4] Jiang, Ze-Ping[1] Rigling, Andreas[2] Li, Mai-He[2,5]

第一作者：刘建锋;Liu, Jian-Feng

通信作者：Li, MH[1];Li, MH[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry A, Beijing, Peoples R China;[2]Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland;[3]Univ Basel, Inst Bot, Basel, Switzerland;[4]Berlin Brandenburg Inst Adv Biodivers Res BBIB, Berlin, Germany;[5]Chinese Acad Sci, Inst Appl Ecol, Shenyang, Peoples R China

年份：2017

卷号：7

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85012940463);WOS:【SCI-EXPANDED(收录号:WOS:000393941700001)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos 41371075 and 41371076) and the China Scholarship Council (No. 201303270003).

语种：英文

摘要：Drought potentially affects carbon balance and growth of trees, but little is known to what extent soil plays a role in the trade-off between carbon gain and growth investment. In the present study, we analyzed leaf non-structural carbohydrates (NSC) as an indicator of the balance of photosynthetic carbon gain and carbon use, as well as growth of European beech (Fagus sylvatica L.) saplings, which were grown on two different soil types (calcareous and acidic) in model ecosystems and subjected to a severe summer drought. Our results showed that drought led in general to increased total NSC concentrations and to decreased growth rate, and drought reduced shoot and stem growth of plants in acidic soil rather than in calcareous soil. This result indicated that soil type modulated the carbon trade-off between net leaf carbon gain and carbon investment to growth. In drought-stressed trees, leaf starch concentration and growth correlated negatively whereas soluble sugar: starch ratio and growth correlated positively, which may contribute to a better understanding of growth regulation under drought conditions. Our results emphasize the role of soil in determining the trade-off between the balance of carbon gain and carbon use on the leaf level and growth under stress (e.g. drought).