Scholarlink

<p><i>Phlomoides rotata</i> (<i>P. rotata</i>) is an endangered medicinal plant on the Qinghai Tibet plateau. It is widely used due to its significant analgesic and hemostatic effects without addiction risk. At present, the resource pressure rises with the increase of the medicinal demand of <i>P. rotata</i>. However, research on the mechanism of its environmental adaptation is still relatively limited. Therefore, we set up four gradients (75%, 55%, 35%, and 15% FC) groups of drought treatments on <i>P. rotata</i> to investigate their production parameters, physiological, and metabolic responses. Drought decreased the seedling survival rate but enhanced root development and increased the root-shoot ratio. In comparison to the well-watered group, drought increased the stomatal index and glandular density. As to the biochemical parameters, the levels of proline and malondialdehyde increased under drought conditions. Activities of antioxidant enzymes and sugars levels initially increased but then decreased during drought stress. Levels of soluble protein did not change significantly in this process. Shanzhiside methyl ester and 8-O-acetyl shanzhiside methyl ester contents of 15% FC decreased by 41.32% and 42.98% respectively in the aerial parts, and increased by 18.91% and 18.85% respectively in root parts compared to 75% FC. Similarly, the contents of Forsythia glycoside B, Acteoside, Chlorogenic acid, and Luteoloside in the aerial parts decreased, while an increase was detected in root parts. Under drought stress, the concentration of secondary metabolites in the aerial parts decreased, whereas it increased in the roots. The adaptation of <i>P. rotata</i> seedlings to drought stress results from multiple factors. This study offers preliminary insights into the adaptation mechanism of <i>P. rotata</i> to drought, and provides suggestions for its artificial cultivation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the Response and Adaptation Mechanism of Phlomoides rotata to Drought Stress

  • 期刊论文

  • 发表日期：

    2026年2月2日

查看全文
  • Zihong Wang,
  • Xin Bao,
  • Rui Gu,
  • Shihong Zhong

摘要

Phlomoides rotata (P. rotata) is an endangered medicinal plant on the Qinghai Tibet plateau. It is widely used due to its significant analgesic and hemostatic effects without addiction risk. At present, the resource pressure rises with the increase of the medicinal demand of P. rotata. However, research on the mechanism of its environmental adaptation is still relatively limited. Therefore, we set up four gradients (75%, 55%, 35%, and 15% FC) groups of drought treatments on P. rotata to investigate their production parameters, physiological, and metabolic responses. Drought decreased the seedling survival rate but enhanced root development and increased the root-shoot ratio. In comparison to the well-watered group, drought increased the stomatal index and glandular density. As to the biochemical parameters, the levels of proline and malondialdehyde increased under drought conditions. Activities of antioxidant enzymes and sugars levels initially increased but then decreased during drought stress. Levels of soluble protein did not change significantly in this process. Shanzhiside methyl ester and 8-O-acetyl shanzhiside methyl ester contents of 15% FC decreased by 41.32% and 42.98% respectively in the aerial parts, and increased by 18.91% and 18.85% respectively in root parts compared to 75% FC. Similarly, the contents of Forsythia glycoside B, Acteoside, Chlorogenic acid, and Luteoloside in the aerial parts decreased, while an increase was detected in root parts. Under drought stress, the concentration of secondary metabolites in the aerial parts decreased, whereas it increased in the roots. The adaptation of P. rotata seedlings to drought stress results from multiple factors. This study offers preliminary insights into the adaptation mechanism of P. rotata to drought, and provides suggestions for its artificial cultivation.