Phylogenetic and Multivariate Analyses To Determine the Effects of Different Tillage and Residue Management Practices on Soil Bacterial Communities

Ceja-Navarro, Javier A.; Rivera-Orduña, Flor N.; Patiño-Zúñiga, Leonardo; Vila-Sanjurjo, Antón; Crossa, J.; Govaerts, Bram; Dendooven, Luc

doi:10.1128/aem.02726-09

Cited by 166 publications

(93 citation statements)

References 62 publications

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“…Tillage treatment effects were less pronounced at the 5-15 cm depth. These observations are in agreement with previous findings reported by, for example, Ceja-Navarro et al [35], Drijber et al [36], Ekenler and Tabatabai [37], Feng et al [12], Helgason et al [13], and Ibekwe et al [15]. Total PLFAs in the no-till surface soil were much higher than those reported in a previous study during the fallow period [12] conducted on the same soil type although organic carbon contents at the two sites were similar.…”

Section: Discussionsupporting

confidence: 51%

Impact of No-Tillage and Conventional Tillage Systems on Soil Microbial Communities

Mathew

Feng

Githinji

et al. 2012

Applied and Environmental Soil Science

266

142

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Soil management practices influence soil physical and chemical characteristics and bring about changes in the soil microbial community structure and function. In this study, the effects of long-term conventional and no-tillage practices on microbial community structure, enzyme activities, and selected physicochemical properties were determined in a continuous corn system on a Decatur silt loam soil. The long-term no-tillage treatment resulted in higher soil carbon and nitrogen contents, viable microbial biomass, and phosphatase activities at the 0-5 cm depth than the conventional tillage treatment. Soil microbial community structure assessed using phospholipid fatty acid (PLFA) analysis and automated ribosomal intergenic spacer analysis (ARISA) varied by tillage practice and soil depth. The abundance of PLFAs indicative of fungi, bacteria, arbuscular mycorrhizal fungi, and actinobacteria was consistently higher in the no-till surface soil. Results of principal components analysis based on soil physicochemical and enzyme variables were in agreement with those based on PLFA and ARISA profiles. Soil organic carbon was positively correlated with most of the PLFA biomarkers. These results indicate that tillage practice and soil depth were two important factors affecting soil microbial community structure and activity, and conservation tillage practices improve both physicochemical and microbiological properties of soil.

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Section: Discussionsupporting

confidence: 51%

Impact of No-Tillage and Conventional Tillage Systems on Soil Microbial Communities

Mathew

Feng

Githinji

et al. 2012

Applied and Environmental Soil Science

266

142

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“…in different soil management and crop rotation systems, observing that, in regard to the soil management system, the number of isolates obtained on the no-tillage system was very similar to the number obtained in the conventional tillage system, 51 and 49 % respectively. In contrast with this study, Ceja-Navarro et al (2010) observed that the Pseudomonadales group, represented mainly by fluorescent Pseudomonas sp., was favored mainly by treatments in which crop residues were maintained, both in the conventional and the no-tillage systems. However, these microorganisms were negatively affected by the no-vegetation treatment.…”

Section: Management Systemcontrasting

confidence: 52%

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Nascimento

Cruz

Dantas

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:Microorganisms have a fundamental importance in agricultural ecosystems and may be influenced by several factors, including soil management. The aim of this study was to evaluate the effects of cropping systems and soil covers on the microbial community in soil cultivated with muskmelon (Cucumis melo L.). The experiment was conducted in a randomized complete block design with four replications. The treatments were arranged in a split plot design with cropping systems (no-tillage and conventional tillage systems) assigned to the whole plot treatments, while a group of seven soil covers (sunn hemp; millet; sunn hemp + millet; corn + brachiaria; spontaneous vegetation; bare soil; and spontaneous vegetation + polyethylene film) defined the subplot treatments. Total bacteria, sporulating bacteria, fluorescent Pseudomonas sp., and total fungi were quantified at six different times (in fallow soil, at planting of green manures in the soil, when transplanting muskmelon seedlings, and 20, 40, and 60 days after transplanting [DAT]). To determine the quantity of microorganisms, the plate count method was used, with a specific culture medium for the groups. The cultivation of sunn hemp associated with no-tillage at transplanting of muskmelon showed a greater quantity of colony forming units (CFUs) of total bacteria compared to the conventional tillage system. In most treatments, conventional tillage showed greater amounts of sporulating bacteria in relation to no-tillage at the time of transplanting muskmelon and at 40 DAT. The tillage systems and soil cover did not change the total amount of fungi and fluorescent Pseudomonas sp.

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“…The differences in silt and sand fraction under zero tillage suggest that it was a safer agriculture treatment to improve and preserve soil microbial diversity Significance of taxonomic and phylogenetic similarity between pairwise tillage treatments (CPT and ZT, CPT and PT, ZT and PT) were tested. * 0.01 < P < 0.05, ** P < 0.01, ns not significant, PT plow tillage, ZT zero tillage, CPT chisel plough tillage (Ceja-Navarro et al 2010), leading to higher nutrient levels (organic carbon) than plow tillage was in our study. This can explain why larger differences in both bacterial polygenetic and taxonomic diversity were found between the zero tillage and plow tillage (Fig.…”

Section: Tillage Treatment Contributes To Differences In Soil Charactmentioning

confidence: 68%

“…Numerous studies have focused on how microbial abundance and structure are affected by reduced tillage and have indicated that soil organic carbon is a majority factor modifying the soil microbial community (Ceja-Navarro et al 2010;Pastorelli et al 2013). However, a few studies have shown that conservation tillage enhances soil carbon sequestration, but these reports have described changes in microbial biomass and diversity in northern China that account for approximately 56 % of the Chinese land area, only using indirect techniques (Chen et al 2009;Wang et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Conservation tillage increases soil bacterial diversity in the dryland of northern China

Wang

Lü

Chen

et al. 2016

Agron. Sustain. Dev.

124

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Agricultural practices change soil's physical and chemical properties, therefore modifying soil microbial communities. Conservation tillage is widely used to improve the soil texture and nutrient status in the dryland regions of northern China. However, little is known about the influence of soil properties on microbes, in particular on the effect of conservation tillage on soil bacterial communities. Here, we studied the effect of a 5-year tillage treatment on soil properties and soil bacterial communities in the dryland regions of northern China using a high-throughput sequencing technology and quantitative PCR of 16S rRNA genes. We compared the changes in soil bacterial diversity, and composition was measured for conservation tillage, including zero plow or chisel plow, and for conventional tillage using plow. Our results show that conservation tillage increased the Simpson index by 378 % and exhibited significantly dissimilar polygenetic diversity, with r of 1, and taxonomic diversity, of r higher than 0.49, compared to conventional tillage. This finding demonstrates that conservation tillage modifies soil bacterial diversity. Chisel plow and zero tillage increase the abundance of the genus Bacillus, including 85 % of the phylum Firmicutes, and of Rhizobiales belonging to the Alphaproteobacteria. Overall conservation tillage increased the abundance of profitable functional bacteria species.

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Phylogenetic and Multivariate Analyses To Determine the Effects of Different Tillage and Residue Management Practices on Soil Bacterial Communities

Cited by 166 publications

References 62 publications

Impact of No-Tillage and Conventional Tillage Systems on Soil Microbial Communities

Impact of No-Tillage and Conventional Tillage Systems on Soil Microbial Communities

Microbial Communities in Soil Cultivated with Muskmelon under Different Management Systems

Conservation tillage increases soil bacterial diversity in the dryland of northern China

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