Zhang Tong, Lv Xiangyang, Zhao Qian, Zhang Caijuan, Yin Honglin, Deng Shuyu, Yan Gui, Wang Guangzhi, Cao Xiaoyan, Ou Hong, Shen Gang
Chengdu Institute of Chinese Herbal Medicine Chengdu China.
Neijiang Academy of Agricultural Sciences Neijiang China.
Ecol Evol. 2024 Oct 3;14(10):e70354. doi: 10.1002/ece3.70354. eCollection 2024 Oct.
is a member of the Asparagaceae family whose medicinal part is the dried root tuber. The distribution of and its secondary metabolites are closely associated with environmental factors, such as climate and soil properties. By establishing and optimizing a maximum entropy model, we analyzed and predicted the distribution pattern and migration direction of suitable habitats for and determined the main environmental factors affecting the accumulation of secondary metabolites. Under current climatic conditions, the area of suitable habitats for (208.38 × 10 km) accounts for 21.71% of the land area of China, and the areas of lowly, moderately, and highly suitable areas were 64.15 × 10 km, 113.66 × 10 km, and 30.57 × 10 km, respectively. Under future climate scenarios, the total area of suitable habitats hardly changes. The area of highly suitable habitats significantly decreases under the SSP1-RCP2.6 scenario (to 83.22% of the current value) and the SSP3-RCP7 scenario (to 48.94% of the current value), but eventually increases to 112.86% of the current value under the SSP5-RCP8.5 scenario, which indicates that might adapt better to a high-carbon-emissions scenario. Under different climate scenarios, low-impact areas mainly occur in southern China and will correspond 92.07% of the current suitable area. Highly suitable habitats primarily occur in the southeastern Sichuan Basin, northern Guangxi, eastern Guizhou, and western Hunan. HPLC analysis showed that the content of protodioscin (0.373%) and protogracillin (0.044%) in S2 was the highest. The total saponins contents of S1 and S2 were the highest, which were 35.6586 and 33.1262 mg/g, respectively. The total polysaccharide content of S9 was the highest (16.9467%). The total contents of saponins and polysaccharides in were significantly, but oppositely, correlated with temperature, precipitation, and other factors. This study has identified environmental factors affecting the growth and quality of , which has guiding significance for resource conservation and site selection for large-scale cultivation.
是天门冬科的一员，其药用部位为干燥的块根。其分布及其次生代谢产物与气候和土壤性质等环境因素密切相关。通过建立和优化最大熵模型，我们分析并预测了其适宜生境的分布格局和迁移方向，并确定了影响次生代谢产物积累的主要环境因素。在当前气候条件下，其适宜生境面积（208.38×10平方千米）占中国陆地面积的21.71%，低度、中度和高度适宜区域面积分别为64.15×10平方千米、113.66×10平方千米和30.57×10平方千米。在未来气候情景下，适宜生境总面积变化不大。在SSP1-RCP2.6情景（降至当前值的83.22%）和SSP3-RCP7情景（降至当前值的48.94%）下，高度适宜生境面积显著减少，但在SSP5-RCP8.5情景下最终增至当前值的112.86%，这表明其可能更适应高碳排放情景。在不同气候情景下，低影响区域主要出现在中国南方，将占当前适宜面积的92.07%。高度适宜生境主要出现在四川盆地东南部、广西北部、贵州东部和湖南西部。高效液相色谱分析表明，S2中原薯蓣皂苷（0.373%）和原纤细皂苷（0.044%）的含量最高。S1和S2的总皂苷含量最高，分别为35.6586和33.1262毫克/克。S9的总多糖含量最高（16.9467%）。其皂苷和多糖的总含量与温度、降水等因素呈显著但相反的相关性。本研究确定了影响其生长和品质的环境因素，对资源保护和大规模种植选址具有指导意义。
