Continuous cropping of soybean alters the bulk and rhizospheric soil fungal communities in a Mollisol of Northeast PR China

Liu, Junjie; Yao, Qin; Li, Yansheng; Zhang, Wu; Mi, Gang; Chen, Xueli; Yu, Zhenhua

doi:10.1002/ldr.3378

Cited by 44 publications

(44 citation statements)

References 68 publications

(122 reference statements)

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“…The dominant genus Pseudombrophila in T5 (14.3%) became one of the least abundant genera in T30 (1.5%). These observed differences in different groups further support previous reports demonstrating that the abundance and structure of fungal communities are highly influenced by continuous cropping [11][12][13][14].…”

Section: Discussionsupporting

confidence: 90%

“…Previous studies on soybean, ginger, potato, cucumber, and cotton have found that the alpha diversity of bacteria and fungi was decreased due to continuous cropping year, and the soil microbial metabolic diversity and soil physicochemical properties were also significantly affected [10][11][12][13]. The relative abundance of pathogenic fungi in rhizospheric soil was revealed to be significantly higher in continuous cropping than in cropping rotation systems [14]. However, the mechanism underlying the effect on soil microbial communities and the relationship between these effects and continuous cropping systems have not yet been fully elucidated for sugar beet.…”

Section: Introductionmentioning

confidence: 82%

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Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Huang¹,

Sun²,

Fu³

et al. 2019

Genes

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The continuous cropping of sugar beet can result in soil degradation and a decrease in the sugar beet yield and quality. However, the role of continuous sugar beet (Beta vulgaris L. var. saccharifera) cropping in shaping the structure and function of the rhizosphere microbial community remains poorly investigated. In this study, we comparatively investigated the impact of different numbers of years of continuous sugar beet cropping on structural and functional changes in the microbial community of the rhizosphere using high-throughput sequencing and bioinformatics analysis. We collected rhizosphere soils from fields continuously cropped for one-year (T1), five-year (T5), and thirty-year (T30) periods, as well as one bulk soil (T0), in the Xinjiang Uygur Autonomous Region. The results demonstrated that continuous sugar beet cropping resulted in a significant decline in the community diversity of soil bacterial and fungal populations from T1 to T5. With continuous change in the structure of the microbial community, the Shannon diversity and observed species were increased in T30. With an abundance of pathogenic microbes, including Acidobacteria, Alternaria, and Fusarium, that were highly enriched in T30, soil-borne diseases could be accelerated, deduced by functional predictions based on 16S rRNA genes. Continuous sugar beet cropping also led to significant declines in beneficial bacteria, including Actinobacteria, Pseudomonas spp., and Bacillus spp. In addition, we profiled and analyzed predictive metabolic characteristics (metabolism and detoxification). The abundance of phenolic acid decarboxylase involved in the phenolic acid degradation pathway was significantly lower in groups T5 and T30 than that in T0 and T1, which could result in the phenolic compounds becoming excessive in long-term continuous cropping soil. Our results provide a deeper understanding of the rhizosphere soil microbial community's response to continuous sugar beet cropping, which is important in evaluating the sustainability of this agricultural practice.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 82%

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Huang¹,

Sun²,

Fu³

et al. 2019

Genes

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“…Likewise, Fusarium oxysporum and Fusarium solani cause root rot and wilt, collar canker, and dieback disease in tea plants [45,46]. Recent studies show that continuous planting of strawberry and soybean leads to an increase in the relative abundance of Fusarium oxysporum [53,54]. In this study, Fusarium (Fusarium oxysporum, Fusarium solani) and Microidium phyllanthi produced the same result as in a previous study in response to tea monoculture, suggesting that continuous tea cropping may increase the occurrence of pathogenic fungi in soils.…”

Section: Discussionmentioning

confidence: 99%

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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“…Continuous cropping of soybean increased the relative abundance of Fusarium oxysporum in soil 6 , and…”

Section: Discussionmentioning

confidence: 99%

“…Continuous cropping, which is the agricultural practice of long-term cultivation of the same crop in identical soil, is a vital agricultural issue because it leads to reduced the soil quality and augmentation of harmful pests and soilborne microbial communities, resulting in yield decline of plants 1 . Rhizosphere soil microorganisms affect the growth, development, and health status of plants 2 , and the in uences of continuous cropping on microbial community structures in rhizosphere soil have gained considerable attention [3][4][5][6][7] . When compared with bacteria, rhizosphere fungi are important decomposers that play vital roles in balancing the rhizosphere ecosystem 8 .…”

Section: Introductionmentioning

confidence: 99%

Continuous Cropping Regulates Fungal Community Structures and Functional Groups in Rhizosphere Soil of Tibet Barley

Yao

Zhao

Yao

et al. 2020

Preprint

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Continuous cropping regulates the community structure of rhizosphere soil microbes; however, the effects of continuous cropping on the community structure and function of rhizosphere fungal communities of plants cultivated in high-altitude regions are not well understood. In this study, 18S rRNA gene high-throughput sequencing was applied to examine the rhizosphere fungal community structure during continuous cropping of Tibet barley (a principal cereal cultivated on the Qinghai-Tibetan Plateau). The results showed that the Chao1 and phylogenetic diversity (PD) indices declined as cropping years increased. Additionally, relative abundance of the genera Cystofilobasidium, Mucor, and Ustilago increased, whereas the abundance of Fusarium decreased during continuous cropping. Furthermore, identification of ecological groups using FUNGuild revealed that saprotrophs, pathogens, and symbiotrophs were the dominant groups in rhizosphere soil, and these three trophic modes all increased significantly with continuous cropping. During continuous cropping, the fungal plant-pathogens Parastagonospora and Ustilago also increased remarkably, as did the endophyte fungi Verticillium. Collectively, continuous cropping of Tibet barely increased the potential for plant-pathogenic and endophyte fungi in rhizosphere soil. Thus, the development of sustainable farming practices to reduce the abundance of harmful fungi is vital to Tibet barley growth and production during continuous cropping of plants cultivated in high-altitude regions.

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Continuous cropping of soybean alters the bulk and rhizospheric soil fungal communities in a Mollisol of Northeast PR China

Cited by 44 publications

References 68 publications

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

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

Continuous Cropping Regulates Fungal Community Structures and Functional Groups in Rhizosphere Soil of Tibet Barley

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