文献类型：期刊文献

英文题名：Effects of Simulated Wind Load on Leaf Photosynthesis and Carbohydrate Allocation in Eight Quercus Species

作者：Yang, Xiuqing[1] Zhang, Peng[2] Wu, Qianting[2] Yan, Haibin[1] Yu, Mukui[2] Wang, Geoff[3] Wu, Tonggui[2]

第一作者：Yang, Xiuqing

通信作者：Wu, TG[1]

机构：[1]Shanxi Agr Univ, Coll Forestry, Taigu 030801, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, East China Coastal Forest Ecosyst Long Term Res S, Hangzhou 311400, Zhejiang, Peoples R China;[3]Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA

年份：2017

卷号：11

期号：6

起止页码：629-634

外文期刊名：JOURNAL OF BIOBASED MATERIALS AND BIOENERGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000430408000014)】；

基金：We acknowledge the imported program of SFA under No. 2015-4-29, and CFERN and GENE Award Funds on Ecological Paper.

语种：英文

外文关键词：Wind Load; Photosynthesis; Carbohydrate Allocation; Leaf Shape; Quercus Trees

摘要：The effect of wind on leaf photosynthesis has been well studied, and is found to be complex. Leaf shape could regulate wind-forces on leaves and influence photosynthesis and physiology. However, the photosynthetic response to wind remains unclear for plants with different leaf shapes. In this study, leaf photosynthesis, stomatal conductance, chlorophyll fluorescence, and carbohydrate allocation were determined under simulated wind load in eight Quercus species with different leaf shapes. In Q. acutissima, photosynthesis decreased significantly with the increase in wind speed (47.58%, P < 0.05), owing to decreased stomatal conductance and photochemical efficiency of PSII, induced by relatively higher drag and destruction under wind for broad leaves. Photosynthesis is also significantly decreased in Quercus trees with broad lobed leaves, resulting from decreased photochemical efficiency of PSII and carbohydrate feedback inhibition. Meanwhile, photosynthesis decreased, albeit insignificantly in Q. phellos and Q. virginiana, because of lower drag and destruction for lanceolate leaves. It indicates that Quercus with lanceolate and broad lobed leaves show better adaptations to wind, which is helpful for Quercus trees selection in windy areas. Under wind load, structural carbohydrates (SC) concentration increased and NSC/SC decreased in Quercus trees, meaning that more carbohydrates were allocated to SCs to restrict leaf tearing.