Response of Fungal Sub-Communities in a Maize-Wheat Rotation Field Subjected to Long-Term Conservation Tillage Management

Zhang, Cunzhi; Líu, Hao; Liu, Senlin; Hussain, Sarfraz; Zhang, Liting; Yu, Xiaowei; Cao, Kaixun; Xin, Xiaozhou; Cao, Hui; Zhu, A. N.

doi:10.3389/fmicb.2022.829152

Cited by 5 publications

(4 citation statements)

References 68 publications

(86 reference statements)

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“…However, in this study, the relative abundance of phyla Acidobacteria and Firmicutes decreased with the application of straw retention in tillage and no-tillage treatment ( Supplementary Figure S1 ). The reduction in acidobacteria might be due to the high level of available carbon sources as it is reported that the relative abundance of acidobacteria was higher in the low level of carbon (Fierer et al, 2007 ), while in this study, total organic carbon was relatively higher with straw retention application (Zhang et al, 2022 ). The relative abundance of the genus Lactococcus, Bacillus , and Solibacillus ( Firmicutes ) and unclassified _o_ iii1-15 ( Actinobacteria ) decreased in tillage with straw retention treatment ( Figure 2 ).…”

Section: Discussionmentioning

confidence: 48%

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Conservation tillage practices affect soil microbial diversity and composition in experimental fields

et al. 2023

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IntroductionConservation tillage is a widely used technique worldwide, but the effects of conservation tillage on bacterial community structure are poorly understood. We explored proportional alterations in the bacterial community under different tillage treatments.MethodologyHence, this study utilized high-throughput sequencing technique to investigate the structure and assembly processes of microbial communities in different tillage treatments.Results and discussionTillage treatments included tillage no-straw retention (CntWt), no-tillage with straw retention (CntWntS), tillage with straw retention (CntWtS), no-tillage and no-straw retention (CntWnt). The influence of tillage practices on soil bacterial communities was investigated using Illumina MiSeq sequencing. Different tillage methods and straw retention systems significantly influenced soil parameters such as total potassium and pH were not affected by tillage practices, while straw retention significantly affected soil parameters including nitrogen content, available phosphorus and available potassium. Straw retention decreased bacterial diversity while increased bacterial richness. The effect of straw retention and tillage on bacterial communities was greater than with no tillage. Phylogenetic β-diversity analysis showed that deterministic homogeneous selection processes were dominated, while stochastic processes were more pronounced in tillage without straw retention. Ecological network analysis showed that microbial community correlation was increased in CntWntS and CntWnt. Straw retention treatment significantly increased the relative abundance of bacterial taxa Proteobacteria, Bacteroidetes, and OD1, while Nitrospirae, Actinobacteria, and Verrucomicrobia significantly decreased.ConclusionThe conservation tillage practices significantly affect soil properties, bacterial composition, and assembly processes; however, further studies are required to investigate the impact of different crops, tillage practices and physiological characteristics on bacterial community structure and functions.

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Section: Discussionmentioning

confidence: 48%

“…We explained the experimental site and sampling strategy in our recently published study (Zhang et al, 2022 ). In brief, the long-term conservation field was commenced in 2006 and based on a completely randomized block design with three replications.…”

Section: Methodsmentioning

confidence: 99%

Conservation tillage practices affect soil microbial diversity and composition in experimental fields

et al. 2023

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“…The soil pH, organic matter (SOM), total nitrogen (TN), total phosphorus (TP), available phosphorus (AP), total potassium (TK), and available potassium (AK) were measured as previously described [ 17 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

“…Recent studies, however, have shown that rare fungal taxa, which likewise include diverse genes and functions [ 14 ], can serve as an equally valuable genetic repository compared to the more abundant and metabolically active strains, and these rare taxa also play an important role in community function and stability [ 13 ]. Furthermore, abundant and rare sub-communities that have different ecological strategies [ 15 ] mean that the structure of those sub-communities is influenced by different controlling factors or ecological processes [ 16 , 17 ]. Compared to abundant taxa, rare taxa have a narrower ecological niche width and lower competitive ability, and are more influenced by external factors, while abundant taxa tend to have a wider ecological niche width and higher competitive ability and are less influenced by external factors [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Biogeographic Patterns of Fungal Sub-Communities under Different Land-Use Types in Subtropical China

Líu

Han

Zhang

et al. 2023

JoF

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Revealing the regional distribution and diversity of fungal sub-communities under different land management practices is essential to conserve biodiversity and predict microbial change trends. In this study, a total of 19 tilled and 25 untilled soil samples across different land-use types were collected from subtropical China to investigate the differences between the spatial distribution patterns, diversity, and community assembly of fungal sub-communities using high-throughput sequencing technology. Our results found that anthropogenic disturbances significantly reduced the diversity of abundant taxa but significantly increased the diversity of rare taxa, suggesting that the small-scale intensive management of land by individual farmers is beneficial for fungal diversity, especially for the conservation of rare taxa. Abundant, intermediate, and rare fungal sub-communities were significantly different in tilled and untilled soils. Anthropogenic disturbances both enhanced the homogenization of fungal communities and decreased the spatial-distance–decay relationship of fungal sub-communities in tilled soils. Based on the null model approach, the changes in the assembly processes of the fungal sub-communities in tilled soils were found to shift consistently to stochastic processes, possibly as a result of the significant changes in the diversity of those fungal sub-communities and associated ecological niches in different land-use types. Our results provide support for the theoretical contention that fungal sub-communities are changed by different land management practices and open the way to the possibility of predicting those changes.

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Soil quality associated with microbial community characteristics and dominant taxa across different tillage practices

Liu,

Zhu,

et al. 2024

Land Degrad Dev

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Despite conservation tillage being a promising strategy to mitigate soil degradation, the intricate role of microbial communities in shaping soil quality over long‐term tillage remains poorly understood. The study aimed to investigate the microbial mechanisms governing the soil quality index (SQI) and maize yield under different tillage practices spanning 13 years, including no‐till without straw retention (NT0), no‐till with straw retention (NTSR), plough tillage with straw retention (PTSR), and rotary tillage with straw retention (RTSR). The findings revealed that NTSR improved the SQI index by 22.4% and 11.3% higher than PTSR and RTSR, respectively, within the 0–10 cm soil layer. This improvement was correlated with an increase in maize yield (R2 = 0.39, p < 0.05). PERMANOVA analysis confirmed that both soil depth and tillage practices significantly impacted the composition of microbial communities (p < 0.05). Furthermore, conservation tillage, compared to PTSR and RTSR, increased the abundance of arbuscular mycorrhizal symbiosis by 78.6%–460.3% but decreased the saprophytic fungal abundance by 27.5%–28.3%. Soil quality was notably influenced by the interaction between bacterial and fungal communities. The presence of bacterial‐dominated Module 2 was associated with decreased soil quality in the 0–10 cm soil depth (r = −0.47, p < 0.01). This study emphasizes the pivotal role of microbial diversity and dominant taxa in driving soil quality after long‐term conservation tillage practices. Understanding these mechanisms is crucial for establishing farmland management to achieve agricultural and ecological sustainability in the face of climate change and soil degradation challenges.

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Response of Fungal Sub-Communities in a Maize-Wheat Rotation Field Subjected to Long-Term Conservation Tillage Management

Cited by 5 publications

References 68 publications

Conservation tillage practices affect soil microbial diversity and composition in experimental fields

Conservation tillage practices affect soil microbial diversity and composition in experimental fields

Biogeographic Patterns of Fungal Sub-Communities under Different Land-Use Types in Subtropical China

Soil quality associated with microbial community characteristics and dominant taxa across different tillage practices

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