文献类型：期刊文献

英文题名：Leaf Structural Carbohydrate Decreased for Pinus thunbergii along Coast-Inland Gradients

作者：Zhang, Peng[1,2] Wen, Yuxiang[1] Wang, Lei[1,3] Zhang, Hui[1] Wang, G. Geoff[4] Wu, Tonggui[1]

第一作者：Zhang, Peng

通信作者：Wu, TG[1]

机构：[1]Chinese Acad Forestry, East China Coastal Forest Ecosyst Long Term Res S, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Northeast Forestry Univ, Ctr Ecol Res, Harbin 150030, Peoples R China;[3]Nanjing Normal Univ, Coll Life Sci, Nanjing 210023, Peoples R China;[4]Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA

年份：2020

卷号：11

期号：4

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000534632500087)】；

基金：This research was funded by National Natural Science Foundation of China (31770756).

语种：英文

外文关键词：coast-inland gradients; wind load; carbohydrates allocation; SC; NSC; Pinus thunbergii

摘要：Although photosynthesis (carbohydrate production) decreases under wind load, it is unclear how carbohydrate categories allocation changes. We determined the leaf morphology (specific leaf area (SLA), needle thickness), anatomy (cuticle thickness, epidermal thickness), photosynthesis (effective quantum yield of Photosystem II (Y(II)), carbohydrate (structure carbohydrate (SC) and non-structure carbohydrate (NSC)), and environmental variables in Pinus thunbergii plantations from coast to inland, with wind speed decreasing. As expected, wind, accounting for 19-69% of the total variation, was the most dominant environmental variable determining the leaf traits. Y(II) and NSC increased, while SC and SC/NSC decreased along the coast-inland gradients (p < 0.01). These results confirmed that, although carbohydrate production decreased, SC allocation increased with increasing wind load. SLA and needle thickness decreased, while cuticle thickness and epidermal thickness increased from coast to inland. Needle thickness and cuticle thickness showed strong correlations to SC/NSC. These variations indicated that carbohydrate categories allocation related to variations of needle morphology and anatomy for P. thunbergii under wind, because of more SC allocation in leaf to support tensile strength and hardness of the cell wall under wind. Therefore, allocation between SC and NSC may be helpful for understanding the long-term adaptation of plants to wind load.