Leaching alleviates phenol-mediated root rot in Panax notoginseng by modifying the soil microbiota

Zhang, Yijie; Li, Tianyao; Wang, Hongzhi; Lu, Renchuang; Liu, Yixiang; Huang, Huichuan; He, Xiahong; Yang, Min; Zhu, Shusheng

doi:10.1007/s11104-021-05136-z

Cited by 14 publications

(7 citation statements)

References 66 publications

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“…and Lysobacter sp.) ( 29 ). These results imply that root rot-infected Sanqi ginseng could shape the yearly decline of beneficial bacterial agents by modulating the phenolic acid profiles.…”

Section: Discussionmentioning

confidence: 99%

The loss of microbial autotoxin degradation functions is associated with the decline of beneficial bacterial agents induced by phenolic acids

Wang,

Lin,

et al. 2023

Microbiol Spectr

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Continuous cultivation of medicinal plants can disrupt the rhizosphere’s microbial community. There is still a need to know about the beneficial bacterial community, their putative drivers, and the potential functions they may have. This study used different growth years of Sanqi ginseng ( Panax notoginseng ) with root rot to look at the beneficial microbial community structure, the function of microbial carbon source utilization, and the function of rhizosphere soil metabolism. The beneficial bacterial community changed and the relative abundance of beneficial agents was suppressed significantly with the successive Sanqi ginseng plantings. The carbon source utilization capacity and diversity increased significantly, whereas three autotoxin degradation-related pathways (biosynthesis of other secondary metabolites, metabolism of terpenoids and polyketides, and xenobiotics biodegradation and metabolism) were downregulated considerably with planting year extended. The changes in the beneficial agents were driven by the shifts in phenolic acid profiles, and the decline of beneficial microbes led to the loss of microbial autotoxin degradation functions. Overall, these results provide insight into beneficial microbes, microbial functions, phenolic acids, and their interactions, and these findings are essential for maintaining healthy and sustainable cultivation of Sanqi ginseng. IMPORTANCE Sanqi ginseng is a valuable perennial Chinese herb with various benefits for human health. However, continuous cultivation causes a high incidence of root rot disease, which leads to decreased yield and serious economic losses and ultimately impedes the sustainable development of Chinese medicine production. The significance of this study is to reveal the pattern of changes in beneficial bacteria and their related functions in root rot diseased rhizosphere with the successive planting years of Sanqi ginseng. This study found that the decline of beneficial bacterial agents mediated by phenolic acid profiles appears to be associated with the loss of microbial autotoxin degradation functions. This result may have new implications for deciphering the causes of Sanqi ginseng’s continuous cropping obstacles.

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Section: Discussionmentioning

confidence: 99%

The loss of microbial autotoxin degradation functions is associated with the decline of beneficial bacterial agents induced by phenolic acids

Wang,

Lin,

et al. 2023

Microbiol Spectr

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“…We hypothesized that the organic acids changed the soil's physicochemical properties and consequently affected the bacteria and fungi. Furthermore, increased fungal diversity and decreased bacterial diversity were major factors associated with Sanqi root rot [33]. Notably, all three types of organic acids with different concentrations and durations increased the fungal diversity to varying extents, especially the root rot pathogens.…”

Section: Organic Acid Concentrations Of >250 Mg/kg Increased Microbia...mentioning

confidence: 94%

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

Hei,

Li,

Wang

et al. 2024

Agronomy

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Panax notoginseng (Sanqi) is a precious traditional Chinese medicine that is commonly cultivated using conventional management methods in agricultural systems in Yunnan, China, where it faces the challenge of continuous cropping obstacles (CCOs). However, the existence of Sanqi CCOs in Sanqi–pine agroforestry systems remains unclear. Here, we applied three types of exogenous organic acids (phthalic acid, palmitic acid, and phthalic + palmitic mixed organic acids) mainly derived from the root exudates of Sanqi to simulate the CCOs; then, we compared the effects on plant growth, soil physicochemical properties, soil microbes, and soil metabolites. We found that organic acid concentrations of >250 mg/kg reduced the fresh weight of Sanqi and the levels of total nitrogen, ammonium nitrogen, soil water content, total phosphorus, and pH value; these concentrations also increased the soil bacterial and fungal α-diversity. The type of organic acid, as opposed to the concentration and duration of treatment, had a vital impact on the structure of the bacterial and fungal community in Sanqi soils. Moreover, the organic acid concentrations of >250 mg/kg also decreased the complexity and stability of the bacterial and fungal network. In addition, the metabolic pathways in the soils under different organic acids included 17 differential metabolites (DMs), which were involved in steroid hormone biosynthesis. The structural equation models (SEMs) revealed that plant growth, soil edaphic factors, and soil metabolites had direct or indirect influences on soil microbial communities under different organic acid conditions. Our results suggest that any phthalic or palmitic acid concentrations at concentrations >250 mg/kg are detrimental to multiple aspects of Sanqi cultivation, confirming the presence of Sanqi CCOs in Sanqi–pine agroforestry systems.

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“…Similarly, Hu et al (2007) also revealed that phenolic acids ≥ 150 μg g -1 could inhibit the growth of cucumber. Even high concentrations of some phenolic acid compounds can suppress the growth of Panax notoginseng (Zhang et al 2021). However, vanillic acid stimulates the proliferation of Fusarium and Rhizoctonia pathogens at low concentrations, but suppresses them at high concentrations.…”

Section: Action Of Phenolic Acidsmentioning

confidence: 99%

Long-term continuous cropping induced phenolic acid accumulation, acidification and microbial deterioration in greenhouse-based strawberry soil

tongyi,

Zou,

Wang

et al. 2023

Preprint

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Continuous cropping (CC) can trigger drastic variations in the microenvironment of farmland soil, resulting in the development of persistent soil-borne diseases. However, the integrated influences of long-term CC on the abiotic and biotic factors of the strawberry soil have not been sufficiently characterized. In this study, variations in physico-chemical characteristics, enzymatic activities, phenolic acids and microorganisms were investigated in long-term strawberry CC soil. The results demonstrated a continuous decrease in soil pH and a first increase and then decrease in soil enzyme activities. Additionally, phenolic acid concentrations were found to accumulate. CC for 15 and 18 years resulted in a significant decrease microbial diversity, relative abundance, and the ratio of bacteria to fungi in soil. Specifically, bacterial Bacillus (Top2 genus) increased considerably in the two and five years, while fungal Fusarium (Top2 genus) decreased in the fifteen and eighteen years. Moreover, the structural equation model (SEM) provided a comprehensive insight into the effects of strawberry CC on soil conditions. The SEM revealed that the standardized regression coefficients of CC on enzyme activity, phenolic acid, bacterial and fungal communities were 0.86, 0.95, -0.39, and 0.17, respectively. In conclusion, the findings contribute to a deeper knowledge of the challenges posed by CC and provide insights for future research and agricultural management practices.

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Leaching alleviates phenol-mediated root rot in Panax notoginseng by modifying the soil microbiota

Cited by 14 publications

References 66 publications

The loss of microbial autotoxin degradation functions is associated with the decline of beneficial bacterial agents induced by phenolic acids

The loss of microbial autotoxin degradation functions is associated with the decline of beneficial bacterial agents induced by phenolic acids

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

Long-term continuous cropping induced phenolic acid accumulation, acidification and microbial deterioration in greenhouse-based strawberry soil

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