Rhizospheric soil and root endogenous fungal diversity and composition in response to continuous Panax notoginseng cropping practices

Tan, Yong; Cui, Yinshan; Li, Haoyu; Kuang, Anxiu; Li, Xiaoran; Wei, Yunlin; Ji, Xiuling

doi:10.1016/j.micres.2016.09.009

Cited by 165 publications

(138 citation statements)

References 38 publications

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“…In this study, fungal diversity showed inconsistency; however, compared to CK, fresh and old cropped tea fields significantly decreased the fungal diversity ( Figure 2D,E). These results are in line with previous findings, in which the fungal diversity decreased in response to continuous planting of Panax notoginseng [40]. The decrease in fungal diversity has been recognized as a foremost threat to ecosystem services [41], resulting in partial loss of soil function (plant growth promotion or disease inhibition) [42,43], which may result in reduced tea production under a consecutive monoculture system.…”

Section: Discussionsupporting

confidence: 91%

“…Correspondingly, Xiong et al [35] also observed a significant influence on alterations in the fungal community structure during continuous cultivation of vanilla. In fact, this phenomenon also occurs in both perennials and annual crops such as soybean [10,39], Panax notoginseng [40], potato [9], and coffee [6] continuous cropping systems. In addition, the UPGMA and PCoA helped to explain that the fungal communities fluctuated after 30 years of tea monoculture.…”

Section: Discussionmentioning

confidence: 99%

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Long-Term Monoculture Negatively Regulates Fungal Community Composition and Abundance of Tea Orchards

et al. 2019

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Continuous cropping frequently leads to soil acidification and major soil-borne diseases in tea plants, resulting in low tea yield. We have limited knowledge about the effects of continuous tea monoculture on soil properties and the fungal community. Here, we selected three replanted tea fields with 2, 15, and 30 years of monoculture history to assess the influence of continuous cropping on fungal communities and soil physiochemical attributes. The results showed that continuous tea monoculture significantly reduced soil pH and tea yield. Alpha diversity analysis showed that species richness declined significantly as the tea planting years increased and the results based on diversity indicated inconsistency. Principal coordinate analysis (PCoA) revealed that monoculture duration had the highest loading in structuring fungal communities. The relative abundance of Ascomycota, Glomeromycota, and Chytridiomycota decreased and Zygomycota and Basidiomycota increased with increasing cropping time. Continuous tea cropping not only decreased some beneficial fungal species such as Mortierella alpina and Mortierella elongatula, but also promoted potentially pathogenic fungal species such as Fusarium oxysporum, Fusarium solani, and Microidium phyllanthi over time. Overall, continuous tea cropping decreased soil pH and potentially beneficial microbes and increased soil pathogenic microbes, which could be the reason for reducing tea yield. Thus, developing sustainable tea farming to improve soil pH, microbial activity, and enhanced beneficial soil microbes under a continuous cropping system is vital for tea production.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Long-Term Monoculture Negatively Regulates Fungal Community Composition and Abundance of Tea Orchards

et al. 2019

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“…Ascomycota, Basidiomycota, and Zygomycota were the top three fungal phyla detected in both healthy and diseased A. macrocephala plants, which was similar to the profile of soil fungi. This pattern fits with earlier publications, which have shown that endophytic fungi are primarily derived from soil fungi that enter the plants via roots, tubers, leaves and stems (Dai et al, 2010;Tan et al, 2017b). At the genus level, Fusarium and Alternaria abundance significantly increased in the root-rot diseased A. macrocephala samples.…”

Section: Discussionsupporting

confidence: 91%

“…The soil which was loosely attached to the roots was removed by gentle shaking. Tightly bound soil was considered rhizospheric and was obtained by firmly shaking the root system in a sterile plastic bag (Kobayashi et al, 2015;Tan et al, 2017b). The rhizospheric soil samples were thoroughly mixed, and randomly divided into three subsamples, as described previously (Yu et al, 2019).…”

Section: Study Site and Experimental Designmentioning

confidence: 99%

Diversity of rhizosphere and endophytic fungi in Atractylodes macrocephala during continuous cropping

Zhu

Ji³

et al. 2020

PeerJ

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Rhizospheric and endophytic fungi are key factors which influence plant fitness and soil fertility. Atractylodes macrocephala is one of the best-known perennial herbs used in traditional Chinese medicine. Continuous cropping has been shown to have a negative effect on its growth and renders it more susceptible to microbial pathogen attacks. In this study, we investigated the effects of continuous cropping on the endophytic and rhizospheric fungi associated with A. macrocephala using culture-independent Illumina MiSeq. Continuous cropping was found to decrease fungal diversity inside plant roots, stems, leaves and tubers. Additionally, we found that the structure and diversity of rhizospheric and endophytic fungal communities were altered by root-rot disease. Fusarium was overrepresented among root-rot rhizospheric and endophytic fungi, indicating that it has a major negative impact on plant health during A. macrocephala monocropping. Canonical correspondence analysis of the control and diseased samples revealed that pH, hydrolysis N, electrical conductivity and Hg content were well-correlated with fungal community composition during continuous cropping. Taken together, these results highlight the ecological significance of fungal communities in maintaining plant fitness and will guide the development strategies to attenuate the negative impacts of A. macrocephala continuous cropping.

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“…This implies that Proteobacteria is generally adapted to the rhizosphere environment across diverse plant species. In terms of fungi, there were the distinct dominant phyla between the growth stages, but these dominant phyla, Basidiomycota, Ascomycota, Chytridiomycota and Zygomycota, have been identified as dominant phyla in previous studies on Panax notoginseng (Tan et al, 2017), ramie , and wheat and canola (Schlatter et al, 2019). However, unlike plant and animal ecology, there is not a clear definition for the dominant phylum in microbial ecology until now.…”

Section: Discussionmentioning

confidence: 98%

Rhizosphere bacterial and fungal communities during the growth of Angelica sinensis seedlings cultivated in an Alpine uncultivated meadow soil

Zhigang

Guo

Chen

et al. 2020

PeerJ

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Background: Angelica sinensis seedlings are grown in alpine uncultivated meadow soil with rainfed agroecosystems to ensure the quality of A. sinensis after seedling transplantation. The aim was to investigate the rhizosphere bacterial and fungal communities during the growth stages of A. sinensis seedlings. Methods: The bacterial and fungal communities were investigated by HiSeq sequencing of 16S and 18S rDNA, respectively. Results: Proteobacteria and Bacteroidetes were bacterial dominant phyla throughout growth stages. Fungal dominant phyla varied with growth stages, dominant phyla Ascomycota and Chytridiomycota in AM5, dominant phyla Basidiomycota, Ascomycota and Zygomycota in BM5, and dominant phyla Basidiomycota and Ascomycota in CM5. There was no significant variation in the alpha-diversity of the bacterial and fungal communities, but significant variation was in the beta-diversity. We found that the variation of microbial community composition was accompanied by the changes in community function. The relative abundance of fungal pathogens increased with plant growth. We also identified the core microbes, significant-changing microbes, stage-specific microbes, and host-specific microbes. Plant weight, root length, root diameter, soil pH, rainfall, and climate temperature were the key divers to microbial community composition. Conclusions: Our findings reported the variation and environmental drivers of rhizosphere bacterial and fungal communities during the growth of A. sinensis seedlings, which enhance the understanding of the rhizosphere microbial community in this habitat.

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Rhizospheric soil and root endogenous fungal diversity and composition in response to continuous Panax notoginseng cropping practices

Cited by 165 publications

References 38 publications

Long-Term Monoculture Negatively Regulates Fungal Community Composition and Abundance of Tea Orchards

Long-Term Monoculture Negatively Regulates Fungal Community Composition and Abundance of Tea Orchards

Diversity of rhizosphere and endophytic fungi in Atractylodes macrocephala during continuous cropping

Rhizosphere bacterial and fungal communities during the growth of Angelica sinensis seedlings cultivated in an Alpine uncultivated meadow soil

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