Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting

Bai, Yani; Ren, Ping; Feng, Peng; Yan, Hong; Li, Wenxiao

doi:10.1016/j.scitotenv.2020.139388

Cited by 18 publications

(6 citation statements)

References 39 publications

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“…For example, the endophytic microbiome of apple scion differs when grafted with different rootstock-scion combinations (Liu et al, 2018). In tomato plants, grafting combinations have increased the diversity of leaf endophytic bacterial communities under high saline conditions (Bai et al, 2020). Furthermore, different tomato rootstocks were found to have an impact on the diversity and composition of bacterial communities in both the root and shoot endosphere, with the above-ground microbiome structure being preferentially associated with particular rootstock genotypes (Poudel et al, 2019;Toju et al, 2019).…”

Section: Plant-associated Microbiomes Assembled By Plant Graftingmentioning

confidence: 99%

“…Therefore, it is plausible to hypothesize that plant performance can be enhanced with the optimization of microbial community assembly that develops with adequate grafting combinations (Bai et al, 2020;Gao et al, 2015;Ge et al, 2022;Rolli et al, 2015), and this includes understanding the grafting effects on the core microbiome, i.e. the commonly occurring organisms that appear in all assemblages of a particular habitat and that are critical to the function of that type of community (Shade and Handelsman, 2012).…”

Section: Exploring Grafting Traits Through Signaling and Core Microbiomementioning

confidence: 99%

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Plant grafting: Maximizing beneficial microbe-plant interactions

Morais,

Torres,

Kuramae

et al. 2024

Rhizosphere

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Section: Plant-associated Microbiomes Assembled By Plant Graftingmentioning

confidence: 99%

Section: Exploring Grafting Traits Through Signaling and Core Microbiomementioning

confidence: 99%

Plant grafting: Maximizing beneficial microbe-plant interactions

Morais,

Torres,

Kuramae

et al. 2024

Rhizosphere

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“…Soil microorganisms are directly involved in soil nutrient cycling and nutrient acquisition by root systems and are an important factor affecting crop yields (Lareen et al, 2016). Saline soils reduce the diversity of bacterial communities through saline osmotic pressure (Jiang et al, 2019), which affects the secretion of soil enzymes (such as urease and alkaline phosphatase), reduces the availability of nutrients, and leads to a lack of competition within the community that causes some pathogenic species to proliferate and endanger crop health (Y. Bai et al, 2020). Furthermore, soil salinization also directly affects microbial metabolic functions, such as by reducing the abundance of glycosyltransferase and glycoside hydrolase genes and decreasing carbohydrate metabolism (Zuluaga et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Response of the tomato rhizosphere bacterial community to water–oxygen coupling under micronanobubble oxygenated drip irrigation in mildly saline soil

Wang,

Guo,

Zhang

et al. 2023

Land Degrad Dev

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The deterioration of the soil water–air environment due to salinization can reduce soil bacterial activity and cause crop yield reduction. Micronanobubble oxygenated drip irrigation can significantly improve the nonsaline soil water–air environment and enhance bacterial activity, but its effect on salinized soil bacteria is unknown. In this study, we used a tomato cultivation experiment in mildly saline soil to evaluate the responses of the rhizosphere bacterial community to the soil microenvironment created by micronanobubble oxygenated drip irrigation. The results indicated that the soil environmental factors (including soil electrical conductivity, i.e., EC) (r = 0.46) and root length (r = −0.86) had important regulatory effects on bacterial community function, which had significant direct effects on tomato yield (r = 0.46). The moderate dissolved oxygen concentration treatment significantly reduced the EC by 63.22%–73.32% compared with CK (noncultivated soil treatment) and generally increased the root length; however, only the combination of a moderate dissolved oxygen concentration and excess irrigation (A15W1.2) significantly increased tomato yields by 190.90% compared with A0W0.8 (the combination of a low dissolved oxygen concentration and insufficient irrigation) because the irrigation water volume was the limiting condition affecting the benefits of the root length increase. The high dissolved oxygen concentration treatment significantly reduced the EC by 60.36%–92.31% and increased the bacterial community diversity by 4.08%–6.16% compared with CK; these aforementioned changes favored the increase in tomato yield. However, similar to the result of the moderate dissolved oxygen treatments, the tomato yields were significantly higher and among the highest of all treatments only when a high dissolved oxygen concentration was combined with sufficient irrigation or excess irrigation (A30W1 or A30W1.2) due to the limiting effect of the irrigation water volume. Therefore, accounting for the changes in EC, soil bacterial community, and tomato yields, A15W1.2, A30W1, and A30W1.2 are recommended for tomato production in mildly saline soils.

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“…Microbial groups (dominant and key microorganisms) play essential roles in promoting the utilization of nutrient elements by plant. Rhizosphere microorganisms are affected by soil nutrients and pH, electrical conductivity (EC), and soil moisture ( Jiang J. et al, 2017 ; Bahram et al, 2018 ; Bai et al, 2020 ; Zhou et al, 2020 ). The composition, diversity, and dominance of bacteria vary among soils with different pH and soil organic carbon content ( Sui et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Populus root exudates are associated with rhizosphere microbial communities and symbiotic patterns

Song

et al. 2022

Front. Microbiol.

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IntroductionMicrobial communities in the plant rhizosphere are critical for nutrient cycling and ecosystem stability. However, how root exudates and soil physicochemical characteristics affect microbial community composition in Populus rhizosphere is not well understood.MethodsThis study measured soil physiochemistry properties and root exudates in a representative forest consists of four Populus species. The composition of rhizosphere bacterial and fungal communities was determined by metabolomics and high-throughput sequencing.ResultsLuvangetin, salicylic acid, gentisic acid, oleuropein, strigol, chrysin, and linoleic acid were the differential root exudates extracted in the rhizosphere of four Populus species, which explained 48.40, 82.80, 48.73, and 59.64% of the variance for the dominant and key bacterial or fungal communities, respectively. Data showed that differential root exudates were the main drivers of the changes in the rhizosphere microbial communities. Nitrosospira, Microvirga, Trichoderma, Cortinarius, and Beauveria were the keystone taxa in the rhizosphere microbial communities, and are thus important for maintaining a stable Populus microbial rhizosphere. The differential root exudates had strong impact on key bacteria than dominant bacteria, key fungi, and dominant fungi. Moreover, strigol had positively effects with bacteria, whereas phenolic compounds and chrysin were negatively correlated with rhizosphere microorganisms. The assembly process of the community structure (keystone taxa and bacterial dominant taxa) was mostly determined by stochastic processes.DiscussionThis study showed the association of rhizosphere microorganisms (dominant and keystone taxa) with differential root exudates in the rhizosphere of Populus plants, and revealed the assembly process of the dominant and keystone taxa. It provides a theoretical basis for the identification and utilization of beneficial microorganisms in Populus rhizosphere.

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Shift in rhizospheric and endophytic bacterial communities of tomato caused by salinity and grafting

Cited by 18 publications

References 39 publications

Plant grafting: Maximizing beneficial microbe-plant interactions

Plant grafting: Maximizing beneficial microbe-plant interactions

Response of the tomato rhizosphere bacterial community to water–oxygen coupling under micronanobubble oxygenated drip irrigation in mildly saline soil

Populus root exudates are associated with rhizosphere microbial communities and symbiotic patterns

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