|Table of Contents|

Effects of Silicon and Arbuscular Mycorrhiza on the Roots of Glycyrrhiza uralensis Under Drought Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年20
Page:
99-109
Research Field:
Publishing date:

Info

Title:
Effects of Silicon and Arbuscular Mycorrhiza on the Roots of Glycyrrhiza uralensis Under Drought Stress
Author(s):
HAO Shengjie; HUO Jiaxing; LI Yuye; DU Yuxin; LI Jinyue; KANG Junyu
(State Key Laboratory of Crops in Arid Habitat,Gansu Agricultural University,Lanzhou，Gansu 730070)
Keywords:
drought stress; Glycyrrhiza uralensis; application of Si; arbuscular mycorrhizal fungi; secondary metabolites
PACS:
S 567.7+1
DOI:
10.11937/bfyy.20240565
Abstract:
Taking Glycyrrhiza uralensis as the test material，two levels of exogenous silicon (Si) concentration，two levels of arbuscular mycorrhizal fungi (AMF) inoculation，and five different humidity treatments were randomly combined to detect and evaluate the yield，mineral absorption，antioxidant potential，and secondary metabolites of licorice.The effects of Si and AMF on Glycyrrhiza uralensis root system under drought stress were studied，in order to provide reference for the sustainable development of Glycyrrhiza uralensis industry.The results showed that,under drought stress,the root length,diameter,and dry weight (DG) of licorice significantly decreased compared to control group (P<0.05).However,Si and AMF significantly increased root area (P<0.05) and root colonization levels (P<0.05).Under the G40 treatment,the interaction between Si and AMF significantly increased the glycyrrhizic acid (GA) content (26.62 mg·g-1DG).Under severe drought conditions,total flavonoids (TF) and phenolic compounds (TP) decreased,but the application of Si and AMF significantly increased the levels of gallic acid (16.46 mg·g-1DG) and trans-ferulic acid (SA) (1.11 mg·g-1DG).Furthermore,the synergistic effects of Si and AMF positively impacted nitrogen (N) and phosphorus (P) concentrations in the roots,increasing them by 53.51% and 74.07%,respectively.Under low irrigation levels,the concentrations of phosphorus and silicon in the roots significantly increased,and potassium (K) concentrations also increased under Si treatment in the G100,G80,and G40 treatments,ranging from 38.5% to 44.7%.This study demonstrates that exogenous Si and AMF have a synergistic effect in improving plant growth and enhancing the accumulation of metabolites in licorice,providing important insights for mitigating the adverse effects of drought on the licorice industry.

References:

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Last Update: 2024-10-29