应用生态学报2024，Vol.35Issue(8)：2073-2081,9.DOI:10.13287/j.1001-9332.202408.002
兴安落叶松叶片解剖结构对气候暖化的响应及种源差异
Response of leaf anatomical structure of Larix gmelinii to climate warming and provenance variation
摘要
Abstract
Exploring the response of leaf anatomical structure to climate warming is helpful for understanding the adaptive mechanisms of trees to climate change.We conducted a warming experiment by transplanting seedlings of Larix gmelinii from 11 provenances to two common gardens,and examined the response of leaf anatomical structure to climate warming.The results showed that warming significantly increased leaf thickness(TL),upper epidermal mesophyll thickness(TUEM),lower epidermal mesophyll thickness(TLEM),endodermal thickness(TE),vascular bundle diameter(DVB),transfer tissue thickness(TTT),and the percentage of mesophyll thickness to TL(PMT),and significantly decreased the upper epidermal thickness(TUE)and the percentage of epidermal thickness to TL(PE).The mesophyll thickness was positively associated with chlorophyll concentration and maximum net photosyn-thetic rate.The responses of TL,TUEM,TLEM,TE,DVB,TTT,TUE,PMT and PE to warming differed among all the provenances.As the aridity index of the original site increased,the magnitude of the warming treatment's effect decreased for TL,TUEM,TLEM,TTT and PMT,and increased for TUE and PE.Warming increased the thickness and proportion of profit tissue(e.g.,mesophyll)and decreased the thickness and proportion of defensive tissue(e.g.,epidermis),and those changes varied among provenances.L.gmelinii could adapt to climate warming by adjusting leaf anatomical structure,and this ability was weak for trees from provenance with high aridity index.关键词
气候变化/同质园/解剖结构/驯化/适应Key words
climate change/common garden/anatomical structure/acclimation/adaptation引用本文复制引用
张海宁,张俊,张栋甲,李璐瑶,田瑞萍,王传宽,全先奎..兴安落叶松叶片解剖结构对气候暖化的响应及种源差异[J].应用生态学报,2024,35(8):2073-2081,9.基金项目
本文由国家重点研发计划项目(2021YFD220040107)和国家级大学生创新训练项目(202210225130)资助. （2021YFD220040107）
