Effects of continuous cucumber cropping on crop quality and soil fungal community

Sun, Kaining; Longyun, Fu; Song, Yang; Yuan, Liang; Zhang, Haoran; Wen, Dan; Yang, Ning; Wang, Xiao; Yue, Yaoquan; Li, Xuhua; Wang, Kean

doi:10.1007/s10661-021-09136-5

Cited by 26 publications

(15 citation statements)

References 35 publications

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“…This finding may explain the importance of P over N in this study because continuous cropping leads to an increasing crisis of fungal diseases in the tobacco plants. Consistent with our study results, similar results were previously reported ( Jin et al, 2021 ; Sun et al, 2021 ). Previous studies also suggested pH to be the most important factor that impacts the fungal community ( Zhou et al, 2016 ; Tarin et al, 2021 ).…”

Section: Resultssupporting

confidence: 94%

Application of Manure Rather Than Plant-Origin Organic Fertilizers Alters the Fungal Community in Continuous Cropping Tobacco Soil

Wei

et al. 2022

Front. Microbiol.

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Continuous cropping leads to the development of serious fungal diseases in tobacco plants and depleted yield of tobacco (Nicotiana tabacum), which can be mitigated by organic fertilization. Yet, we know little about how organic fertilizers affect the fungal community of continuous cropping tobacco soil. In this study, we investigated the soil fungal community after 11 years of tobacco planting with chemical fertilization (CF) or chemical fertilization combined with organic fertilizers obtained from plant or animal origin, including oil cake (CFO), straw (CFS), and farmyard fertilizer (CFM). The predominant phyla of Ascomycota (70%) and Mortierellomycota (15%) were identified in all the treatments. A significantly higher proportion of Pyrenochaetopsis and lower relative abundance of Sordariomycetes were observed in the CFM group compared to the controls. Compared to CF and non-fertilized control (CK), CFO and CFS led to higher species richness (P < 0.05), while CFM led to a less uniform fungal community, indicated by lower Shannon and higher Simpson diversity indices (P < 0.05). Pearson’s correlation and redundancy analysis suggested that fertilizations primarily influenced the fungal community by altering the soil nutrient conditions, among which soil organic carbon and total phosphorus significantly correlated with the fungal diversity and community composition (P < 0.05). Notably, FUNGuild annotation suggested that while other treatments showed no significant effect on the fungal trophic modes, CFM strongly increased the abundance of saprotrophic fungi by more than 30% (P < 0.05), thus preventing the prevalence of potential pathotypes and symbionts. The results suggest that the type of organic fertilizers is essential to the long-term effects of organic application on the fungal community, and the animal-origin manure seems to be a better choice than plant-origin materials in continuous cropping tobacco fields.

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Section: Resultssupporting

confidence: 94%

Application of Manure Rather Than Plant-Origin Organic Fertilizers Alters the Fungal Community in Continuous Cropping Tobacco Soil

Wei

et al. 2022

Front. Microbiol.

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“…However, due to the differences between crops, the causes of continuous cropping obstacles have not been fully revealed [5,16,18]. Traditional continuous monoculture will lead to a series of problems, such as the deterioration of soil physical and chemical properties, the reduction of soil biological enzyme activity, the accumulation of autotoxic substances, and the imbalance of soil microbial community [28,30], which will eventually lead to the decline of crop yield and quality and the reduction of disease resistance [31].…”

Section: Discussionmentioning

confidence: 99%

Effects of Continuous Cropping on Bacterial Community and Diversity in Rhizosphere Soil of Industrial Hemp: A Five-Year Experiment

Guo

Chen

Li³

et al. 2022

Diversity

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Long-term continuous monoculture cultivation harms soil physicochemical and microbial communities in agricultural practices. However, little has been reported on the effect of continuous cropping of industrial hemp on bacterial community and diversity in the rhizosphere soil. Our study investigated the changes in physicochemical properties and bacterial communities of industrial hemp rhizosphere soils in different continuous cropping years. The results showed that continuous cropping would reduce soil pH and available phosphorus (AP), while electrical conductivity (EC), available nitrogen (AN), and available potassium (AK) would increase. Soil bacterial diversity and richness index decreased with continuous cropping years. At the same time, continuous cropping marked Acidobacteria, Bacteroidetes, and Gemmatimonadetes increase, and the Proteobacteria and Actinobacteria decreased. Moreover, we found that pH, AK, and AP were the critical factors associated with the changes in the abundance and structure of the bacterial community. Overall, our study first reported the effect of continuous cropping on the rhizosphere soil microflora of industrial hemp. The results can provide a theoretical basis for revealing the obstacle mechanism of continuous cropping of industrial hemp and contribute to the sustainable cultivation of industrial hemp in the future.

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“…This is supported by previous studies of the cucumber rhizosphere, where AM fungi (AMF) significantly altered the nutrient composition of the branches of the host plant, with the strongest contrast observed between cucumber-irregular symbiotic plants and non-mycorrhizal cucumber plants ( Ravnskov and Larsen, 2016 ). The composition of soil fungal communities changed with continuous cucumber cultivation, which may have been caused by the combined cultivation period of cucumber and excessive application of chemical fertilizers ( Sun et al, 2021 ), such as nitrogen fertilizer and phosphate fertilizer.…”

Section: Discussionmentioning

confidence: 99%

Influence of Association Network Properties and Ecological Assembly of the Foliar Fugal Community on Crop Quality

Xing

Zhi

et al. 2022

Front. Microbiol.

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Revealing community assembly and their impacts on ecosystem service is a core issue in microbial ecology. However, what ecological factors play dominant roles in phyllosphere fungal community assembly and how they link to crop quality are largely unknown. Here, we applied internal transcriptional spacer high-throughput sequencing to investigate foliar fungal community assembly across three cultivars of a Solanaceae crop (tobacco) and two planting regions with different climatic conditions. Network analyses were used to reveal the pattern in foliar fungal co-occurrence, and phylogenetic null model analysis was used to elucidate the ecological assembly of foliar fungal communities. We found that the sensory quality of crop leaves and the composition of foliar fungal community varied significantly across planting regions and cultivars. In Guangcun (GC), a region with relatively high humidity and low precipitation, there was a higher diversity and more unique fungal species than the region of Wuzhishan (WZS). Further, we found that the association network of foliar fungal communities in GC was more complex than that in WZS, and the network properties were closely related to the sensory quality of crop. Finally, the results of the phylogenetic analyses show that the stochastic processes played important roles in the foliar fungal community assembly, and their relative importance was significantly correlated with the sensory quality of crop leaves, which implies that ecological assembly processes could affect crop quality. Taken together, our results highlight that climatic conditions, and plant cultivars play key roles in the assembly of foliar fungal communities and crop quality, which enhances our understanding of the connections between the phyllosphere microbiome and ecosystem services, especially in agricultural production.

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Effects of continuous cucumber cropping on crop quality and soil fungal community

Cited by 26 publications

References 35 publications

Application of Manure Rather Than Plant-Origin Organic Fertilizers Alters the Fungal Community in Continuous Cropping Tobacco Soil

Application of Manure Rather Than Plant-Origin Organic Fertilizers Alters the Fungal Community in Continuous Cropping Tobacco Soil

Effects of Continuous Cropping on Bacterial Community and Diversity in Rhizosphere Soil of Industrial Hemp: A Five-Year Experiment

Influence of Association Network Properties and Ecological Assembly of the Foliar Fugal Community on Crop Quality

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