Impact of rice straw management strategies on rice rhizosphere microbiomes

Otero-Jiménez, Vanessa; Carreño-Carreño, Jibda del Pilar; Elsas, Jan Dirk van; Uribe-Vélez, Daniel

doi:10.1016/j.apsoil.2021.104036

Cited by 15 publications

(8 citation statements)

References 46 publications

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“…Our results indicate that Ascomycota plays a vital role in the process of straw decomposition under freeze-thaw conditions, which is consistent with previous findings [59]. For example, Penicillium sp.…”

Section: Discussionsupporting

confidence: 93%

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

et al. 2021

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Rice is a staple food for the world’s population. However, the straw produced by rice cultivation is not used sufficiently. Returning rice straw to the field is an effective way to help reduce labor and protect the soil. This study focused on the effect of water-covered depth with the freeze–thaw cycle on rice straw decomposition and the soil fungal community structure in a field in Northeast China. The field and controlled experiments were designed, and the fungal ITS1 region was tested by high-throughput sequencing for analyzing the fungal communities in this study. The results showed that water coverage with the freeze–thaw cycle promoted the decomposition of rice straw and influenced the fungal community structure; by analyzing the network of the fungal communities, it was found that the potential keystone taxa were Penicillium, Talaromyces, Fusarium, and Aspergillus in straw decomposition; and the strains with high beta-glucosidase, carboxymethyl cellulase, laccase, lignin peroxidase, and manganese peroxidase could also be isolated in the treated experiment. Furthermore, plant pathogenic fungi were found to decrease in the water-covered treatment. We hope that our results can help in rice production and straw return in practice.

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Section: Discussionsupporting

confidence: 93%

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

et al. 2021

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“…The composition of root secretions varies between stands of different ages, thus affecting the proportions of soil microorganisms and community structures (Llado et al, 2018). In general, Proteobacteria , Bacteroidetes, and Firmicutes were found to be common soil inhabitants (Otero‐Jiménez et al, 2021). In our study, the dominant bacteria at the phylum level were Actinobacteriota , Proteobacteria , Acidobacteriota, and Chloroflexi .…”

Section: Discussionmentioning

confidence: 99%

“…Hence, plantation management measures such as fertilization and disease control require attention. It has been reported that Sordariales and Pleosporale s produce cellobiohydrolases and respond to high inputs of fresh carbon (Otero‐Jiménez et al, 2021). Our research showed that the relative abundance of Pleosporale s was positively related to the AK content (Figure 6b), which increased with increasing pecan age (Table S3).…”

Section: Discussionmentioning

confidence: 99%

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Pecan plantation age influences the structures, ecological networks, and functions of soil microbial communities

et al. 2022

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Understanding the changes in microbial communities with increasing plantation age will benefit the maintenance of forest health and productivity and the sustainable development of forest ecosystems. It was not clear before this study whether the microbial communities of pecan (Carya illinoinensis) plantations would be affected by their age. Based on MiSeq sequencing, we studied the effects of pecan age on microbial communities in rhizosphere and bulk soils of pecan plantations for the first time.The results showed that the bacterial alpha diversity of bulk soil increased significantly with plantation age (p < 0.05), while fungal alpha diversity was less influenced by pecan age in both rhizosphere soil and bulk soil. Pecan age significantly influenced

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“…Reports of rhizosphere microorganisms were mostly concentrated on grassland and farmland ecosystems (Nan et al, 2020 ; Latz et al, 2021 ; Otero-Jiménez et al, 2021 ); however, there are relatively few studies on woody plants in forest ecosystems, particularly there is no sufficient information on pecan plantation. Soil bacteria and fungi are the two largest groups, and their community composition and abundance can characterize soil health and productivity level (Xu H. et al, 2021 ; Yang et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

et al. 2022

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Understanding microbial communities associated with bulk and rhizosphere soils will benefit the maintenance of forest health and productivity and the sustainable development of forest ecosystems. Based on MiSeq sequencing, we explored the differences between the bulk soil and the rhizosphere soil on bacterial and fungal communities of pecan plantation. Results suggested that rhizosphere-associated fungal rather than bacterial community structures differed from bulk soil, and rhizosphere soil had lower fungal diversity than bulk soil. Actinobacteria and Cantharellales were the bacterial and fungal biomarkers of the rhizosphere soil of pecan plantation, respectively. In addition, Pleosporales, which are mainly involved in saprophylaxis and plant pathogenic processes, was identified as one of the most important fungal biomarkers for the bulk soil, and the FunGuild predicted a higher relative abundance of pathogenic fungi in bulk soil compared to rhizosphere soil. The pH, ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), and total carbon (TC) contents drove microbial community structure and composition. The bacterial network was simpler in the rhizosphere soil than in the bulk soil. However, fungi showed the opposite network pattern. Keystone species in bacterial and fungal networks were mostly involved in nutrient cycling and the C cycling, and were found to be enriched in the rhizosphere soil. Overall, in terms of bacterial and fungal communities, the rhizosphere soil behaves more healthily than the bulk soil and has a higher potential for nutrient cycling.

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Impact of rice straw management strategies on rice rhizosphere microbiomes

Cited by 15 publications

References 46 publications

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

Water-Covered Depth with the Freeze–Thaw Cycle Influences Fungal Communities on Rice Straw Decomposition

Pecan plantation age influences the structures, ecological networks, and functions of soil microbial communities

A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

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