Effects of Root Zone Aeration on Soil Microbes Species in a Peach Tree Rhizosphere and Root Growth

Sun, Maoxiang; Liu, Xiaolong; Shi, Kaiwu; Peng, Futian; Xiao, Yihong

doi:10.3390/microorganisms10101879

Cited by 15 publications

(6 citation statements)

References 44 publications

(49 reference statements)

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“…Frequent drying-wetting cycles were observed at the treatment outlet during the sampling campaigns, which may have in uenced microbial diversity in the channel bed. Previous studies found that aeration can affect soil microbial communities and increase their diversity [50,51]. However, the impact of aeration on ditch sediment needs further investigation.…”

Section: Discussionmentioning

confidence: 94%

Bioremediation of Nitrate in Agricultural Drainage Ditches: Impacts of Low-Grade Weirs on Microbiomes and Nitrogen Cycle Gene Abundance

Wang,

Strock,

Ranaivoson

et al. 2024

Preprint

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Artificial drainage is essential for the success of modern agriculture, but it can also accelerate the movement of nutrients, especially nitrate, from soil to surrounding and downstream water bodies. Reduction of nitrate from agricultural drainage through the use of controlled drainage systems, such as ditches installed with low-grade weirs, has been shown to help reduce nutrient loading into watersheds. However, the effect of weir-installed ditch varies a lot, likely due to microbial structures and functions in the ditch. In this study, we analyzed the temporal and spatial dynamics of microbiomes in the weir-installed and uninstalled (control) ditches over two years by using the 16S rRNA gene amplicon sequencing and the high-throughput quantitative PCR targeting various N cycle-associated genes [the Nitrogen Cycle Evaluation (NiCE) chip]. The installation of the low-grade weir had a significant impact on the microbiome structure and the distribution of denitrifiers. Specifically, microbiome structures were different between the ditch inlets to the outlets. Denitrification functional genes were also more abundant in the inlet than in the other locations and in the channel installed with a low-grade weir. The ditch microbiomes sampled during high-flow seasons (i.e., spring and fall) exhibited greater similarity to each other than microbiomes sampled during low-flow seasons (i.e., summer). Taken together, this study indicates that the low-grade weirs have the potential to foster a more favorable environment for denitrifiers, resulting in an increase in the abundance of denitrification functional genes. These findings could offer valuable insights into system management and optimization strategies.

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Section: Discussionmentioning

confidence: 94%

Bioremediation of Nitrate in Agricultural Drainage Ditches: Impacts of Low-Grade Weirs on Microbiomes and Nitrogen Cycle Gene Abundance

Wang,

Strock,

Ranaivoson

et al. 2024

Preprint

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“…We also conducted a root diameter classification analysis by selecting a range of root diameters. The results showed that LYGN1 significantly increased the root diameter, resulting in thicker roots, especially in pepper seedlings, which may show a longer lifespan and enhanced function [ 41 ]. All these indicators show the great potential of LYGN1 to promote cucumber and pepper seedling growth and root development.…”

Section: Discussionmentioning

confidence: 99%

Serratia marcescens LYGN1 Reforms the Rhizosphere Microbial Community and Promotes Cucumber and Pepper Growth in Plug Seedling Cultivation

Zhang,

Peng,

Hao

et al. 2024

Plants

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The vegetable plug seedling plays an important role in improving vegetable production. The process of plug seedling contributes to high-quality vegetable seedlings. The substrate composition and chemical fertilizer are widely studied to promote seedling growth. However, little is known about the effect of beneficial bacteria in the rhizosphere microbial community and vegetables’ growth during plug seedling. The use of beneficial microbes to promote vegetable seedling growth is of great potential. In this study, we showed that the Serratia marcescens strain LYGN1 enhanced the growth of cucumber and pepper seedlings in plug seedling cultivation. The treatment with LYGN1 significantly increased the biomass and the growth-related index of cucumber and pepper, improving the seedling quality index. Specifically, LYGN1 also improved the cucumber and pepper root system architecture and increased the root diameter. We applied high-throughput sequencing to analyze the microbial community of the seedlings’ rhizosphere, which showed LYGN1 to significantly change the composition and structure of the cucumber and pepper rhizosphere microbial communities. The correlation analysis showed that the Abditibacteriota and Bdellovibrionota had positive effects on seedling growth. The findings of this study provide evidence for the effects of Serratia marcescens LYGN1 on the cucumber and pepper rhizosphere microbial communities, which also promoted seedling quality in plug seedling cultivation.

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“…However, SCA showed high activity in the 20–40 cm soil layer. This may be related to the species and quantity of soil microorganisms in the root zone, soil hydrothermal conditions and root growth secretions ( Sun et al., 2022 ). In addition, the root zone SCA, SPA, SUA and SSA showed higher activity at S1 or S2.…”

Section: Discussionmentioning

confidence: 99%

Effects of drip irrigation on yield, soil fertility and soil enzyme activity of different potato varieties in Northwest China

Zhang,

Chen,

et al. 2023

Front. Plant Sci.

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The effects of different irrigation and fertilization on potato yield, soil fertility and soil enzyme activity of different varieties under drip irrigation fertilization mode were studied, which could provide support for selecting the best varieties in Northwest China. Three factors and three levels orthogonal experimental design method, a total of nine treatments. The three irrigation levels were W1 (100% crop evapotranspiration (ETC)), W2 (80% ETC) and W3 (60% ETC). The three fertilization levels were F1 (N-P2O5-K2O, 240-120-300 kg ha−1), F2 (180-90-225 kg ha−1) and F3 (120-60-150 kg ha−1). The three varieties were V1 (Feiuritar), V2 (Longshu7) and V3 (Qingshu 9). The results showed that different irrigation and fertilization had significant effects on potato yield, soil fertility and soil enzyme activity in root zone. The highest yield of T5 (80%ETC, 180-90-225 kg ha−1, Qingshu 9) was 49,222.3 kg ha−1. With the increase of fertilizer application rate, potato yield and soil enzyme activity in root zone increased first and then decreased, but soil electrical conductivity (SEC), soil nitrate-N content (SNNC), soil alkali-hydrolyzable nitrogen content (SAHC), soil available potassium (AK), soil available phosphorus (AP), soil ammonium-N content (SANC) and soil organic matter (SOM) in root zone increased continuously. The yield, soil catalase activity, soil urease activity and soil sucrase activity at W2 were 2.81% and 22.2%, 1.84% and 7.04%, 8.26% and 9.62%, 5.34% and 13.36% higher than those at W1 and W3, respectively. The overall trend of soil water content, soil nutrient content and enzyme activity in root zone was 0–20 cm >20–40 cm >40–60 cm soil layer. There were many soil factors affecting tuber yield, among which soil enzyme activity, pH value and root zone conductivity were the key factors. The results showed that T5 (80%ETC, 180-90-225 kg ha−1, Qingshu 9) was the best treatment to improve soil enzyme activity and yield.

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Effects of Root Zone Aeration on Soil Microbes Species in a Peach Tree Rhizosphere and Root Growth

Cited by 15 publications

References 44 publications

Bioremediation of Nitrate in Agricultural Drainage Ditches: Impacts of Low-Grade Weirs on Microbiomes and Nitrogen Cycle Gene Abundance

Bioremediation of Nitrate in Agricultural Drainage Ditches: Impacts of Low-Grade Weirs on Microbiomes and Nitrogen Cycle Gene Abundance

Serratia marcescens LYGN1 Reforms the Rhizosphere Microbial Community and Promotes Cucumber and Pepper Growth in Plug Seedling Cultivation

Effects of drip irrigation on yield, soil fertility and soil enzyme activity of different potato varieties in Northwest China

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