Effects of exogenous organic acids on the growth, edaphic factors, soil extracellular enzymes, and microbiomes predict continuous cropping obstacles of Panax notoginseng from the forest understorey

Hei, Jingying; Wang, Shu; He, Xiahong

doi:10.1007/s11104-023-06044-0

Cited by 4 publications

(7 citation statements)

References 54 publications

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“…In our previous study, UPLC/Q-TOF-MS was performed to detect and identify the types and ratios of organic acids in root secretions and soil of Sanqi. Hence, the phthalic:palmitic acid ratio (10:1) as an optimal ratio was selected in our experiment [9]. A total of 6 g of phthalic acid, 6 g of palmitic acid, and mixed acids (6.0 g of phthalic acid + 0.6 g of palmitic acid) were dissolved in 1 mL ethanol solution (0.3%), respectively, and then diluted with water to 0.5 g/L, 25 g/L, and 5 g/L.…”

Section: Experimental Design and Sample Collectionmentioning

confidence: 99%

“…Furthermore, the soil organic acids of Sanqi cultivated using conventional management methods mainly consist of p-hydroxybenzoic, syringic, ferulic, p-coumaric, vanillic, and benzoic acid [8]. However, the organic acids in the soil of Sanqi cultivated in the agroforestry system are mainly phthalic acid and palmitic acid, according to our previous studies [9]. These results suggest that different planting patterns can affect the secretion and soil metabolites of Sanqi.…”

Section: Introductionmentioning

confidence: 96%

“…For example, single organic acids have positive or negative impacts on the growth of Panax ginseng and Glycine max at low or high concentrations, respectively [11,12]. However, mixed organic acids significantly inhibit the growth and survival rate of Panax notoginseng and Andrographis paniculata [9,10]. The applied organic acids can also alter the contents of soil nutrients and organic matter.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the continuous cultivation of Ananas comosus for 15 years resulted in reduced sugar content (sophorose and pinotriose) and increased organic acid content (organic acid metabolites) in the soil, indicating soil quality deterioration [19]. As previously mentioned, mixed organic acids, as opposed to single organic acids, can significantly decrease the plant survival rate [12] and enhance pathogenic bacteria [9,20] while inhibiting beneficial bacteria [20] due to the stronger autotoxicity caused by the synergistic influence of mixed organic acids [21]. Most of the previous research has focused on the effects of a single organic acid on plant growth, soil physicochemical properties, and microorganisms.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous study, four organic acids as a mixture were applied to simulate Sanqi CCOs, and the results showed that a soil organic acid concentration of >150 mg/kg indicated the occurrence of Sanqi CCOs [9]. However, it is more challenging to determine each organic acid concentration representing Sanqi CCOs in soil.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Experimental Design and Sample Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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Tree root-mediated soil metabolome in agroforestry enhancing the growth and quality of Panax notoginseng

Wang,

Mao,

et al. 2024

Plant Soil

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Purpose The ecological cultivation of Panax notoginseng under a forest canopy relies on the coupling of the P. notoginseng growth environment and the forest ecosystem Methods In this study, six tree species, such as Platycladus orientalis (L.) Franco, were chosen to research the effects of species interactions on the growth, quality, and disease occurrence under intercropping with P. notoginseng, with single P. notoginseng serving as the control. Results Intercropping P. notoginseng with PO (Platycladus orientalis, a coniferous tree species) or with SW (Schima wallichii Choisy, a broad-leaved tree species) promoted the accumulation of P. notoginseng biomass, reduced the occurrence of root rot, improved the contents of nitrogen, phosphorus and potassium in P. notoginseng, and increased the saponin concentration. Then, 43 differentially abundant metabolites were screened in the P. notoginseng-tree intercropping system by soil metabolism analysis and compared with those in the monocropped system. Indole-3-carboxaldehyde showed a significant negative relationship with the occurrence of root rot disease and inhibited Fusarium oxysporum. In addition, 2-naphthalenesulfonic acid was significantly positively correlated with biomass and increased the dry weight in the underground part of P. notoginseng in the pot experiments. Conclusions Thus, the coniferous tree species PO and the broad-leaved tree species SW are potentially good neighbours of P. notoginseng, and soil metabolic changes may be important mechanisms for the growth and disease resistance benefits observed in the understorey of P. notoginseng.

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Managing faba bean wilt disease through intercropping with wheat and reasonable nitrogen application: enhancing nutrient absorption and biochemical resistance in faba beans

Hu,

Zheng,

Wang

et al. 2024

Physiol Mol Biol Plants

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Effects of exogenous organic acids on the growth, edaphic factors, soil extracellular enzymes, and microbiomes predict continuous cropping obstacles of Panax notoginseng from the forest understorey

Cited by 4 publications

References 54 publications

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

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

Tree root-mediated soil metabolome in agroforestry enhancing the growth and quality of Panax notoginseng

Managing faba bean wilt disease through intercropping with wheat and reasonable nitrogen application: enhancing nutrient absorption and biochemical resistance in faba beans

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