Soil microbial carbon metabolism reveals a disease suppression pattern in continuous ginger mono-cropping fields

Liu, Xiaojiao; Jiang, Qipeng; Hu, Xueqin; Zhang, Shuting; Liu, Ying; Huang, Wen; Ding, Wei

doi:10.1016/j.apsoil.2019.07.020

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…Rhizosphere microflora has been shown to be a key component of agricultural ecosystems that not only plays a significant role in basic soil processes, but is also actively involved in enhancing soil fertility and crop productivity [9]. 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].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Effects of Continuous Sugar Beet Cropping on Rhizospheric Microbial Communities

Huang¹,

Sun²,

Fu³

et al. 2019

Genes

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“…This may be due to the difference in crop rhizosphere soil types and the ecological environment of the test area, as they have an effect on the composition of the soil microbial community (Cui et al., 2018). Besides, the collection time of soil samples and the age of crop planting may also contribute to this difference (Liu et al., 2019). In addition, the inconsistencies are related to crop species, since the variety and quantity of root exudates of different crops are distinct (Bais, Weir, Perry, Gilroy, & Vivanco, 2006; Larkin, Griffin, & Honeycutt, 2010).…”

Section: Discussionmentioning

confidence: 99%

Ridge–mulch tillage and rotation with broad bean affect soil microbial community, diversity and crop yield in a long‐term potato continuous cropping field

Kang

Yun

Qin

et al. 2020

Soil Use and Management

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Soil microbial disorder caused by continuous cropping of potato is a major challenge in the semi-arid region of northwest China. Crop rotation can enhance crop productivity and increase soil microbial diversity. However, the functional significance of changes in soil microbial communities in different ridge-mulching patterns of potato continuous cropping soil is poorly understood. In view of this, a study was conducted in a 5-year potato field, to determine the effect of three different tillage practices (nonfilm-mulched flat plot-CK, half-mulched ridge cropping-T1 and fully mulched ridge cropping-T2) and two cropping systems (potato-potato-C and potato/ How to cite this article: Kang Y, Liu Y, Qin S, et al. Ridge-mulch tillage and rotation with broad bean affect soil microbial community, diversity and crop yield in a long-term potato continuous cropping field.

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“…Meanwhile, diverse beneficial rhizobacterial genera have been identified as disease-suppressing microbes, including the genera of Bacillus ( 23 , 24 ), Pseudomonas ( 25 ), Streptomy ces ( 23 ), Paenibacillus ( 26 ), Flavobacterium ( 27 ), and Arthrobac ter ( 28 ). Moreover, in bacterial wilt-suppression soil, the enrichment of beneficial microbes in soil was closely related to the metabolism of l -arginine and 4-hydroxybenzoic acid (an auto-toxic substance secreted by plant root) ( 29 ).…”

Section: Introductionmentioning

confidence: 99%