盐胁迫对药用植物生长生理及次生代谢的影响

中图分类号 S567 文献标识码A 文章编号 1007-7731（2025）23-0064-04

DOI号10.16377/j.cnki.issn1007-7731.2025.23.015

Effects of salt stress on the growth physiology and secondary metabolism of medicinal plants

XUE Peng1 ZHANG Ting1 DAI Dongming1 WANG Miao1 LU Xue1 SHAO Yupeng² DUAN Jiaru³ （ 1 Tongliao City Agriculture and Animal Husbandry Development Center，Tongliao O28Ooo， China; ²Tongliao City Farmland Construction Service Center，Tongliao O28Oo， China; 3Tongliao City Khorchin District Agriculture Popularization Station，Tongliao O28Ooo，China）

AbstractTheresearch on the efectsof salt stress on the growth，physiology，and secondary metabolism of medicinal plantswasreviewed.In terms of growth，medicinal plantsexhibit varying responses to salt stress during germinationand growth stages.Low-concentration salt stressmay promote seed germination in Salvia miltiorrhiza （if thesalt concentration is 2O mmol/L）or enhance seedling growth in Periploca sepium （if thesalt concentration is （204 0.2% -0.5%），while high-concentration stress often inhibits biomass accumulation and inducesmorphological changessuch as alterations inroot-to-shootratio.Atthe physiological level，salt stress induces membrane lipid peroxidation in medicinal plants，leading to increased malondialdehyde content and relative electrical conductivity， resulting in celular membrane damage.To scavenge reactive oxygen species，the activities of antioxidant enzymes suchassuperoxide dismutase and peroxidase initially increase but subsequently decline.Regarding secondary metabolism，moderate salt stresscan enhance theaccumulation of pharmacologically active compounds，such as flavonoids，alkaloids，andcardiacglycosides，in various medicinal plants （e.g.，Pogostemon cablin，Rumexjaponicus， and Taraxacum mongolicum），thereby improving the qualityof medicinal materials.In summary，lowsalt stress may promote the growth of some salt-tolerant medicinal plants，but stressbeyond their tolerance range causes cellular damage.Appropriately appliedsalt stress can stimulate the production of higher levelsof active compounds in certain medicinal plants.Thisreview provides insightsforselecting suitable soil conditionsfor medicinal plant cultivation.

近年来，仅依靠药材小规模栽培和采挖野生资源较难满足日益增长的市场需求。（剩余5657字）