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2024 Vol.42, Issue 4 Preview Page

Research Article

Temperature-Mediated Alterations in the Growth, Physiology, Morphology, and Pharmacology of Astragalus membranaceus Bunge: Implications for Medicinal Herb Cultivation and Therapeutic Efficacy
Myeong Ja Kwak1†
,
Yong-il Kim12†
,
Jongkyu Lee1
,
Jooyoung Kim1
,
Eunji Kim1
,
Dawon Kang1
,
Wontae Choi1
,
Su Young Woo1*
1Department of Environmental Horticulture, University of Seoul, Seoul 02504, Korea
2Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong 27709, Korea
*Corresponding Author
†These authors contributed equally to this work.
31 August 2024. pp. 433-451
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Abstract

Climate change is known to affect the physiobiochemical aspects of plants throughout their life cycles, including their growth and maturation stages. This study was conducted to assess the influence of different temperatures on the growth characteristics, physiological responses, leaf surface microstructure, and pharmacological properties of Astragalus membranaceus Bunge (Hwang-gi) cultivated in a temperature-gradient greenhouse (T1, control; T2, moderate increase; T3, high increase; and T4, extreme increase). As the temperature was increased, there was a pronounced decrease in the soil moisture content, leading to alterations in the growth patterns of Hwang-gi. Specifically, a reduction in the chlorophyll content was observed, resulting in diminished photosynthetic capacity. Additionally, changes in leaf surface microstructures indicated adaptive strategies aimed at minimizing moisture loss, such as an increase in the trichome density and a reduction in the pore size. Moreover, a pharmacological analysis of Hwang-gi roots showed that the contents of certain secondary metabolites, in this case astragaloside I, calycosin-7-O-glucoside, and formononetin, were significantly altered by temperature stress. These findings suggest that climate change poses a potential threat to the growth, physiological function, and pharmacological quality of Hwang-gi, highlighting the need for adaptive strategies to protect this valuable medicinal herb.

Keywords
Hwang-gi
marker compounds
medicinal plants
physiopharmacological properties
temperature-gradient greenhouse
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 42
  • No :4
  • Pages :433-451
  • Received Date : 2023-12-12
  • Revised Date : 2024-01-25
  • Accepted Date : 2024-02-16
  • DOI :https://doi.org/10.7235/HORT.20240036
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