Wang Xiaobo, Shen Cheng, Chen Tao, Zhou Xiaodan, Li Yulin
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences (CAS), Lanzhou, China.
Northwest Institute of Plateau Biology, Chinese Academy of Sciences (CAS), Xining, China.
Front Plant Sci. 2023 Jun 28;14:1112164. doi: 10.3389/fpls.2023.1112164. eCollection 2023.
is the most authentic raw material used in Tibetan medicine in China for its various bioactivities. This natural medicine resource is at risk of being exhausted due to the double interference of climate change and anthropogenic over-collection. Little is known about habitat characteristics and the crucial environmental factors that influence the levels of active ingredients. The goal of this study is to understand the variability in the bioactive compound content of a wide range of wild as it adapts to changing environmental conditions. The target compound content of the whole plant material was analyzed with the environmental explanatory variables of the field sample sites using a constrained ordination method for their correlation analysis. The results show that 16.3 percent of the sampled wild populations with the highest bioactive content can be grouped into the elite type. The most prominent environmental variables affecting the content of major bioactive products include altitude, aspect, soil TK content, Fe content, and C/N and N/P ratios. Altitude and aspect put indirect effects that are mediated by plant height and density, N/P ratio puts a direct effect, while soil TK content, Fe content and C/N ratio have both direct and indirect effects on the bioactivity of . In addition to the total negative effects of altitude and C/N ratio, the remaining factors play a driving role. These findings demonstrate variation by geographical conditions across S. mussotii accessions for physiologic responses and secondary compounds in wild populations. The knowledge gained from this study can be used for environmental and plant physiology research, efficient collection of naturally active compounds, and conservation strategies for rare natural plant resources.
是中国藏药中使用的最正宗的原材料，因其具有多种生物活性。由于气候变化和人为过度采集的双重干扰，这种天然药物资源面临枯竭的风险。关于其栖息地特征以及影响活性成分含量的关键环境因素知之甚少。本研究的目的是了解广泛的野生[植物名称]在适应不断变化的环境条件时生物活性化合物含量的变异性。使用约束排序方法对田间采样点的环境解释变量与全株材料的目标化合物含量进行相关性分析。结果表明，生物活性含量最高的16.3%的野生[植物名称]种群可归为精英类型。影响主要生物活性产物含量的最显著环境变量包括海拔、坡向、土壤全钾含量、铁含量以及碳氮比和氮磷比。海拔和坡向通过株高和密度产生间接影响，氮磷比产生直接影响，而土壤全钾含量、铁含量和碳氮比对[植物名称]的生物活性既有直接影响也有间接影响。除了海拔和碳氮比的总体负面影响外，其余因素均起促进作用。这些发现表明，[植物名称]不同地理种源在野生种群中的生理反应和次生化合物存在地理条件差异。本研究获得的知识可用于环境和植物生理学研究、天然活性化合物的高效采集以及珍稀天然植物资源的保护策略。
