丁香属次生代谢产物及其与系统演化和地理环境的关联  

Secondary Metabolites of Syringa and the Linking with Phylogenetic Evolution and Geographical Distributions

作　　者：张照宇[1,2,3] 王清芸 石雷 余文刚[4] 张永清[1,2] 崔洪霞[3] Zhaoyu Zhang;Qingyun Wang;Lei Shi;Wengang Yu;Yongqing Zhang;Hongxia Cui(Shandong University of Traditional Chinese Medicine,Jinan 250300,China;Key Laboratory of Chinese Medicine Resources in Colleges and Universities of Shandong Province,Jinan 250355,China;Key Laboratory of Plant Resources and Beijing Botanical Garden,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;Horticulture College,Hainan University,Haikou 570228,China)

机构地区：[1]山东中医药大学,济南250300 [2]山东省高等学校中药资源学重点实验室,济南250355 [3]中国科学院植物研究所,北方资源植物重点实验室/北京植物园,北京100093 [4]海南大学园艺学院,海口570228

出　　处：《植物学报》2021年第4期470-479,共10页Chinese Bulletin of Botany

基　　金：国家自然科学基金(No.31370361,No.31870516)。

摘　　要：环境塑造的植物次生代谢产物富于变化,也可能带有系统演化的信息。由于完整或具有系统学代表性的专属植物收集存在较大困难,使得次生代谢产物与系统学的关联研究尚不多见。通过文献汇总获得了存在于丁香属(Syringa)植物根、茎、叶和花中的10类377个次生代谢产物,主要涉及甲戊二羟酸途径、脱氧木酮糖磷酸酯途径以及莽草酸途径。在叠加丁香属的系统演化背景后发现:在先分化的组系中特定类型次生代谢产物的优势度较高,后继分化的组系成分优势度降低,化学多样性呈增加趋势,各类次生代谢产物的相对占比趋于均衡;苯丙素类和环/裂环烯醚萜类化合物的表达具有明显的系统保守性。在叠加了地理分布跨度后发现:部分后继分化的局域种比在先分化的广布种具有更为多样的次生代谢成分;木脂素类成分的占比优势与环境胁迫相关。该文为化学多样性与进化的关联研究及次生代谢调控的系统性研究提供了新的启示。Secondary metabolites of plants induced by environmental factors are highly variable, but the given metabolic pathways may have some phylogenetic implications. Due to the difficulty in complete and systematic collections in certain plant groups, the research on the correlation between secondary metabolites and phylogeny is limited. Based on the published papers, 377 secondary metabolites in the roots, stems, leaves and flowers of Syringa were collected, which mainly derived from the mevalonic acid pathway, deoxyxylulose-5-P pathway and shikimic acid pathway. After superimposing phylogenetic background, we found that dominance of a given type of secondary metabolites was high for the firstly diverged series, and the dominance declined for subsequently diverged series with the increase of chemical diversity. Phenylpropanoids and iridoids/secoiridoids were phylogenetically conserved. After superimposing geographical distributions, we found that some local species which were lately diverged had more diverse secondary metabolites compared with widespread species firstly diverged. The high proportion of lignans was highly related to the environmental pressure. This review provided a new clue for the systematic study on the variation pattern of chemical diversity in the taxa within genus in the light of evolution.

关 键 词：丁香属 次生代谢产物 系统学 进化 环境胁迫 

分 类 号：Q948[生物学—植物学]