Interactive regulation of root exudation and rhizosphere denitrification by plant metabolite content and soil properties

Maurer, Daniel; Malique, François; Alfarraj, Salah; Albasher, Gada; Horn, Marcus A.; Butterbach‐Bahl, Klaus; Dannenmann, Michael; Rennenberg, Heinz

doi:10.1007/s11104-021-05069-7

Cited by 53 publications

(13 citation statements)

References 47 publications

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“…Soil metabolite patterns and quantities depend on plant age, species, and environment (Maurer et al, 2021). In a study of greenhouse pepper cultivation, soil metabolites were found to differ between RS and BS, and the abundance of metabolites was higher in RS than in BS (Song et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

et al. 2023

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Understanding soil metabolic diversity and the chemical signals that shape rhizosphere microbial activity is important for protecting plants and improving forest productivity. At present, little information is known about the metabolites in the rhizosphere soil of pecan (Carya illinoinensis) plantation. Based on technologies of untargeted metabolomics and high-throughput sequencing, we investigated differences in the metabolic profiles of rhizosphere and bulk soils and the relationship between metabolites and microorganisms in pecan plantations. The results showed that the abundance of metabolites in rhizosphere soil was significantly higher than that in bulk soil (p < 0.05), especially reflected in plant secondary metabolites and lipids. Orientaloside and marmesin rutinoside were significantly enriched in rhizosphere soil metabolites of pecan at three pecan ages (VIP >1, p < 0.05). The linoleic acid and α-linolenic acid metabolic pathways were significantly enriched in the differential metabolic set (p < 0.01). In addition, tryptophan metabolism, starch and sucrose metabolism, and galactose metabolism were also important factors affecting the rhizosphere metabolic spectrum. Differential metabolites between bulk and rhizosphere soils were more closely associated with bacteria than with fungal communities, particularly in young pecans. With the increasing age of pecans, new significant enrichment of plant secondary metabolites such as cyanidin, 3-trans-caffeoyltormentic acid, N-(1-Deoxy-1-fructosyl) serine and piperdia emerged in the rhizosphere soil.3-trans-caffeoyltormentic acid was positively related to Saitozyma and Protoglossum.Phenylacetaldehyde was positively correlated with Gaiellaceae, Tausonia, and Tuber.This study provides new insights into the mechanisms of interaction between pecans and microorganisms.

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Section: Discussionmentioning

confidence: 99%

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

et al. 2023

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“…Table S1). Instead, it is likely that the temporal patterns are directly related to root exudation, which in turn might reflect plant requirements driven by environmental conditions such as water or nutrient availability (Maurer et al, 2021). For example, the sharp decrease in AMF biomass in July, when the biomass of most other free-living microorganisms peaked, suggests altered root exudation patterns.…”

Section: Discussionmentioning

confidence: 99%

Uptake of plant-derived carbon and proximity to the root determine differences in temporal and spatial stability among microbial groups

Lange

Azizi-Rad

Dittmann

et al. 2023

Preprint

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The interactions between plants and soil microorganisms are fundamental for ecosystem functioning. However, it remains unclear if seasonality of plant growth impacts plant-microbial interactions, such as by inducing shifts in the microbial community composition, their biomass, or changes in the microbial uptake of plant-derived carbon. Here, we investigate the stability of microbial biomass of different functional groups and their net assimilation of plant-derived carbon over an entire growing season. Using a C3-C4 vegetation change experiment, and taking advantage of natural abundances of 13C, we measured the plant-derived carbon in lipid biomarkers of soil microorganisms in rhizosphere and non-rhizosphere soil. We found that temporal and spatial stability was higher in bacterial than in fungal biomass, while the high temporal stability of all bacterial groups even increased in close proximity to roots. Moreover, differences in the association to plants, i.e., symbionts vs. free-living microorganisms, tend to determine the stability in the uptake of plant-derived carbon. Our results indicate, the inputs of plant-derived carbon over the growing season did not result in a shift in the microbial community composition, but instead, functional groups that are not in obligate symbiosis with plants showed a varying use of soil- and plant-derived carbon.

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“…Several explanations exist that could explain such observations. These incude legumes' symbiotic N 2 xation, which enhances soil health by supplementing it with nutrients [8,11], root exudations (i.e., sugars, organic, and amino acids and secondary metabolites, such as avonoids, phenolic, and terpenoids) [75], bene cial soil bacterium (e.g., rhizobia, phosphate-solubilizing, and potassium-solubilizing bacteria) that aids in improving soil physio-chemical properties and nutrient availability [69]. For example, legume crop N xation ability could help improve soil-accessible N forms (i.e., N, NH 4 , and NO 3 ) during intercropping [24].…”

Section: Discussionmentioning

confidence: 99%

Maize/soybeans intercropping increases nutrient uptake, crop yield and modifies soil physio-chemical characteristics and enzymatic activities in a subtropical humid region based in Southwest China

NASAR,

AHMAD,

Gitari

et al. 2023

Preprint

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In China, the high use of nitrogen fertilization for agricultural production and intensive mono-cropping systems have adversely affected the agricultural ecosystem and environment. Therefore, to improve the sustainable agricultural production system, farming systems need to be adjusted within the country. Consequently, a two-year (2021–2022) field experiment was conducted on the maize/soybean intercropping practices with/without nitrogen (N) fertilization (i.e., N0; 0 N kg ha− 1 and N1; 225 N kg ha− 1) to know whether such cropping system can improve the nutrients uptake and crop yields, soil physio-chemical properties, and soil enzymes, which ultimately results in enhanced crop yield. The results revealed that maize intercropping treatments (i.e., N0MI and N1MI) had higher crop yield, biomass dry matter, and 1000-grain weight of maize than mono-cropping treatments (N0MM, and N1MM). Nonetheless, these parameters were optimized in N1MI treatments in both years. For instance, N1MI produced the maximum grain yield (10105 and 11705 kg ha− 1), biomass dry matter (13893 and 14093 kg ha− 1), and 1000-grain weight (420. and 449 g) of maize in the year 2021 and 2022, respectively. Conversely, soybean intercropping treatments (i.e., N0SI and N1SI) reduced such yield parameters for soybean. Also, the land equivalent ratio (LER) and land equivalent ratio for N fertilization (LERN) values were always greater than 1, showing the intercropping system's benefits in terms of yield and improved resource usage. Moreover, maize intercropping treatments (i.e., N0MI and N1MI) and soybean intercropping treatments (i.e., N0SI and N1SI) significantly (p < 0.05) enhanced the nutrient uptake (i.e., N, Fe, P, K, Ca, and Zn) of maize and soybean, however, these nutrients uptakes were more prominent in N1MI and N1SI treatments of maize and soybean, respectively in both years (2021 and 2022) compared with their mono-cropping treatments. Similarly, maize-soybean intercropping treatments (i.e., N0MSI and N1MSI) significantly (p < 0.05) improved the soil-based N, K, P, NH4, NO3, and soil organic matter, but, reduced the soil pH. Such maize-soybean intercropping treatments also improved the soil enzymatic activities such as protease (PT), sucrose (SC), acid phosphatase (AP), urease (UE), and catalase (CT) activities. This indicates that maize-soybean intercropping could potentially contribute to higher and better crop yield, enhanced plant nutrient uptake, improved soil nutrient pool, physio-chemical characteristics, and related soil enzymatic activities. Thus, preferring intercropping to mono-cropping could be a preferable choice for ecological viable agricultural development.

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Interactive regulation of root exudation and rhizosphere denitrification by plant metabolite content and soil properties

Cited by 53 publications

References 47 publications

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

Integrated microbiome and metabolomics analysis reveal a closer relationship between soil metabolites and bacterial community than fungal community in pecan plantations

Uptake of plant-derived carbon and proximity to the root determine differences in temporal and spatial stability among microbial groups

Maize/soybeans intercropping increases nutrient uptake, crop yield and modifies soil physio-chemical characteristics and enzymatic activities in a subtropical humid region based in Southwest China

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