Rehmannia glutinosa Replant Issues: Root Exudate-Rhizobiome Interactions Clearly Influence Replant Success

Bao, Zhang; Weston, Leslie A.; Li, Mingjie; Zhu, Xiaocheng; Weston, Paul A.; Feng, Fan; Zhang, Bingyong; Zhang, Liuji; Gu, Li; Zhang, Zhongyi

doi:10.3389/fmicb.2020.01413

Cited by 19 publications

(11 citation statements)

References 87 publications

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“…Soil sickness is complex problem caused by the interaction of plants, root exudates, the rhizosphere soil environment and other factors ( Zhang B. et al, 2020 ). Studies have shown that allelopathy is one of the main factors causing soil sickness in patchouli ( Xu et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

“…However, there are serious continuous cropping obstacles (also called soil sickness; Zhou et al, 2018 ) in the cultivation of patchouli, which greatly reduce its yield and quality ( Xu et al, 2015 ; Zhang J. F. et al, 2018 ; Zeng et al, 2020 ; Yan et al, 2022 ). Many studies have shown that physical and chemical deterioration of rhizosphere soil, imbalances in the rhizosphere soil microbial community structure and autotoxicity are the main causes of soil sickness ( Dong L. L. et al, 2018 ; Zhang B. et al, 2020 ). Autotoxicity refers to the phenomenon in which plants release allelochemicals to inhibit the growth and development of the same plant, which is a special type of allelopathy ( Liu et al, 2019 ; Zhang Z.…”

Section: Introductionmentioning

confidence: 99%

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Combined physiological and transcriptome analysis revealed the response mechanism of Pogostemon cablin roots to p-hydroxybenzoic acid

et al. 2022

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Pogostemon cablin (patchouli) cultivation is challenged by serious soil sickness, of which autotoxins accumulation is a major cause. p-hydroxybenzoic acid (p-HBA) is one of the main autotoxins of patchouli. However, the molecular mechanism underlying the response of patchouli to p-HBA remains unclear. In this study, RNA-sequencing combined with physiological analysis was used to monitor the dynamic transcriptomic and physiological changes in patchouli seedlings 0, 6, 12, 24, 48, and 96 h after p-HBA treatment. p-HBA stress inhibited root biomass accumulation, induced excessive hydrogen peroxide accumulation and lipid peroxidation, and activated most antioxidant enzymes. Compared with that of the control, the osmotic adjustment substance content was elevated with treatment. Subsequently, 15,532, 8,217, 8,946, 2,489, and 5,843 differentially expressed genes (DEGs) at 6, 12, 24, 48, and 96 h after p-HBA treatment, respectively, were identified in patchouli roots. GO functional enrichment analysis showed that the DEGs were enriched mainly in plasma membrane, defense response, response to chitin, DNA-binding transcription factor activity and abscisic acid-activated signaling pathway. The upregulated genes were involved in glycolysis/gluconeogenesis, cysteine and methionine metabolism, starch and sucrose metabolism, biosynthesis of unsaturated fatty acids, and linoleic acid metabolism. Genes associated with MAPK signaling pathway-plant, plant-pathogen interaction, plant hormone signal transduction were downregulated with p-HBA treatment. These pathways are related to root browning and rotting, leading to plant death.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Combined physiological and transcriptome analysis revealed the response mechanism of Pogostemon cablin roots to p-hydroxybenzoic acid

et al. 2022

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“…strain SSB81 could degrade the accumulated phenolic acids by oxidative and non-oxidative pathways to reduce the toxic level and increase soil fertility. Meanwhile, Pseudomonas aeruginosa with catalpol-degrading capacity was considered to have great potential in mitigating the autotoxicity of medicinal Rehmannia glutinosa [ 283 ].…”

Section: Function Of Soil Microorganisms In Growth Promotion and Qual...mentioning

confidence: 99%

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

Gang

Ren

Bai

et al. 2022

Plants

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Medicinal plants (MPs) are important resources widely used in the treatment and prevention of diseases and have attracted much attention owing to their significant antiviral, anti-inflammatory, antioxidant and other activities. However, soil degradation, caused by continuous cropping, excessive chemical fertilizers and pesticide residues and heavy metal contamination, seriously restricts the growth and quality formation of MPs. Microorganisms, as the major biota in soil, play a critical role in the restoration of the land ecosystem. Rhizosphere microecology directly or indirectly affects the growth and development, metabolic regulation and active ingredient accumulation of MPs. Microbial resources, with the advantages of economic efficiency, harmless to environment and non-toxic to organisms, have been recommended as a promising alternative to conventional fertilizers and pesticides. The introduction of beneficial microbes promotes the adaptability of MPs to adversity stress by enhancing soil fertility, inhibiting pathogens and inducing systemic resistance. On the other hand, it can improve the medicinal quality by removing soil pollutants, reducing the absorption and accumulation of harmful substances and regulating the synthesis of secondary metabolites. The ecological and economic benefits of the soil microbiome in agricultural practices are increasingly recognized, but the current understanding of the interaction between soil conditions, root exudates and microbial communities and the mechanism of rhizosphere microecology affecting the secondary metabolism of MPs is still quite limited. More research is needed to investigate the effects of the microbiome on the growth and quality of different medicinal species. Therefore, the present review summarizes the main soil issues in medicinal plant cultivation, the functions of microbes in soil remediation and plant growth promotion and the potential mechanism to further guide the use of microbial resources to promote the ecological cultivation and sustainable development of MPs.

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“…Continuous cropping refers to crops being farmed in the same field year after year, resulting in lower crop yields, quality deterioration, poor growth, and disease aggravation even under normal cultivation management measures; these problems are also known as soil sickness, replant disease, and consecutive monoculture problems (He et al, 2019;. These problems are typically observed in agricultural crops, especially medicinal plants, such as Panax ginseng (Tong et al, 2021), Panax notoginseng (Tan et al, 2017), Rehmannia glutinosa (Li M. et al, 2017;Zhang et al, 2020), Lepidium meyeni (Wang et al, 2019), and Andrographis paniculata (Li et al, 2020), severely hindering the production, and quality of crops. A number of studies on related continuous cropping obstacles have suggested that allelopathic autotoxicity, aggravation of soil-borne diseases, increase in nematode abundance, deterioration of soil physicochemical properties, and imbalance of soil nutrients are the main causes underlying the continuous cropping obstacles (Zhang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…These problems are typically observed in agricultural crops, especially medicinal plants, such as Panax ginseng (Tong et al, 2021), Panax notoginseng (Tan et al, 2017), Rehmannia glutinosa (Li M. et al, 2017;Zhang et al, 2020), Lepidium meyeni (Wang et al, 2019), and Andrographis paniculata (Li et al, 2020), severely hindering the production, and quality of crops. A number of studies on related continuous cropping obstacles have suggested that allelopathic autotoxicity, aggravation of soil-borne diseases, increase in nematode abundance, deterioration of soil physicochemical properties, and imbalance of soil nutrients are the main causes underlying the continuous cropping obstacles (Zhang et al, 2020). Presently, some scholars have conducted studies on the continuous cropping obstacles of patchouli, but the underlying mechanism remains unclear Zhang J. et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Integrated Analysis of Physiological, mRNA Sequencing, and miRNA Sequencing Data Reveals a Specific Mechanism for the Response to Continuous Cropping Obstacles in Pogostemon cablin Roots

Yan

Cao

et al. 2022

Front. Plant Sci.

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Pogostemon cablin (patchouli) is a commercially important medicinal and industrial crop grown worldwide for its medicinal and aromatic properties. Patchoulol and pogostone, derived from the essential oil of patchouli, are considered valuable components in the cosmetic and pharmaceutical industries. Due to its high application value in the clinic and industry, the demand for patchouli is constantly growing. Unfortunately, patchouli cultivation has suffered due to severe continuous cropping obstacles, resulting in a significant decline in yield and quality. Moreover, the physiological and transcriptional changes in patchouli in response to continuous cropping obstacles remain unclear. This has greatly restricted the development of the patchouli industry. To explore the mechanism underlying the rapid response of patchouli roots to continuous cropping stress, integrated analysis of the transcriptome and miRNA profiles of patchouli roots under continuous and noncontinuous cropping conditions in different growth periods was conducted using RNA sequencing (RNA-seq) and miRNA-seq and complemented with physiological data. The physiological and biochemical results showed that continuous cropping significantly inhibited root growth, decreased root activity, and increased the activity of antioxidant enzymes (superoxide dismutase, peroxidase, and catalase) and the levels of osmoregulators (malondialdehyde, soluble protein, soluble sugar, and proline). Subsequently, we found 4,238, 3,494, and 7,290 upregulated and 4,176, 3,202, and 8,599 downregulated differentially expressed genes (DEGs) in the three growth periods of continuously cropped patchouli, many of which were associated with primary carbon and nitrogen metabolism, defense responses, secondary metabolite biosynthesis, and transcription factors. Based on miRNA-seq, 927 known miRNAs and 130 novel miRNAs were identified, among which 67 differentially expressed miRNAs (DEMIs) belonging to 24 miRNA families were induced or repressed by continuous cropping. By combining transcriptome and miRNA profiling, we obtained 47 miRNA-target gene pairs, consisting of 18 DEMIs and 43 DEGs, that likely play important roles in the continuous cropping response of patchouli. The information provided in this study will contribute to clarifying the intricate mechanism underlying the patchouli response to continuous cropping obstacles. In addition, the candidate miRNAs and genes can provide a new strategy for breeding continuous cropping-tolerant patchouli.

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Rehmannia glutinosa Replant Issues: Root Exudate-Rhizobiome Interactions Clearly Influence Replant Success

Cited by 19 publications

References 87 publications

Combined physiological and transcriptome analysis revealed the response mechanism of Pogostemon cablin roots to p-hydroxybenzoic acid

Combined physiological and transcriptome analysis revealed the response mechanism of Pogostemon cablin roots to p-hydroxybenzoic acid

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

Integrated Analysis of Physiological, mRNA Sequencing, and miRNA Sequencing Data Reveals a Specific Mechanism for the Response to Continuous Cropping Obstacles in Pogostemon cablin Roots

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