Scholarlink

Abstract <p><i>Inula racemosa</i> Hook. F., a rare aromatic herb from the Northern Himalaya, is prized for its roots, which contain pharmacologically active sesquiterpene lactones. This study examines the impact of environmental and edaphic factors on the root morphology, anatomy, and essential oil (EO) composition of <i>I. racemosa</i> cultivated in the field (FLD) and greenhouse (GH). The FLD plants were grown in significantly higher relative humidity (43.9 ± 3.1%) and light intensity (1413 ± 120&#xa0;µmol photons m<sup>−2</sup>&#xa0;s<sup>−1</sup>). However, GH soil had relatively higher nutrients—Nitrogen (25.8%), Phosphorus (47.1%) and organic carbon (6.8 times). Plants grown in the GH developed denser root hairs (2 times) and had enlarged secretory canal area (4.1 times) and secretory canal perimeter (44%) than FLD. Roots grown in FLD showed 1.9 times more lateral roots than GH. GC–MS analysis revealed the presence of fifteen volatile compounds in the EO of the root of <i>I. racemosa</i>. The levels of the majority of the main metabolites were greater in GH roots than in FLD roots, where alantolactone and isoalantolactone increased by 50.4% and 27.7%, respectively. Correlation analysis showed that the components of EO increased under increasedlight intensity, temperature and soil nutrient levels. These results provide insight into how environmental and edaphic factors can affect the production of EO in high-altitude medicinal plants by regulating the environmental conditions that enhance the accumulation of secondary metabolites.</p> Graphical abstract <p></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

Environmental modulation of root essential oil composition in Inula racemosa Hook. F. under field and greenhouse conditions

  • 期刊论文

  • 发表日期：

    2026年6月3日

查看全文
  • Himani Sharma,
  • Mehnaz Gull,
  • Rajendra Bhanwaria,
  • Nagaraju Nekkala,
  • Dhiraj Vyas,
  • Manu Khajuria

摘要

Abstract

Inula racemosa Hook. F., a rare aromatic herb from the Northern Himalaya, is prized for its roots, which contain pharmacologically active sesquiterpene lactones. This study examines the impact of environmental and edaphic factors on the root morphology, anatomy, and essential oil (EO) composition of I. racemosa cultivated in the field (FLD) and greenhouse (GH). The FLD plants were grown in significantly higher relative humidity (43.9 ± 3.1%) and light intensity (1413 ± 120 µmol photons m−2 s−1). However, GH soil had relatively higher nutrients—Nitrogen (25.8%), Phosphorus (47.1%) and organic carbon (6.8 times). Plants grown in the GH developed denser root hairs (2 times) and had enlarged secretory canal area (4.1 times) and secretory canal perimeter (44%) than FLD. Roots grown in FLD showed 1.9 times more lateral roots than GH. GC–MS analysis revealed the presence of fifteen volatile compounds in the EO of the root of I. racemosa. The levels of the majority of the main metabolites were greater in GH roots than in FLD roots, where alantolactone and isoalantolactone increased by 50.4% and 27.7%, respectively. Correlation analysis showed that the components of EO increased under increasedlight intensity, temperature and soil nutrient levels. These results provide insight into how environmental and edaphic factors can affect the production of EO in high-altitude medicinal plants by regulating the environmental conditions that enhance the accumulation of secondary metabolites.

Graphical abstract