Sulfur Metabolism

Takahashi, Hideki

doi:10.1002/9781119991311.ch4

Cited by 1 publication

(2 citation statements)

References 189 publications

(280 reference statements)

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“…This fraction serves as this nutrient reservoir for plants and microbes because, in general, more than 95% of soil S is organically bound [ 12 , 13 , 14 ]. Organic sulfur compounds in the soil are mainly sulfate ester and carbon-bonded S, and their conversion to mineral forms involves biochemical and biological mineralization, respectively; see, e.g., [ 15 , 16 , 17 ]. The hydrolysis of the ester-bonded S fraction of SOM by extracellular sulfatase enzymes in plant roots or microbes increases if a low amount of mineral S-SO 4 occurs in the soil solution, while the oxidation of the C-bonded S fraction requires direct microbial activity and is driven by its need for organic carbon to provide energy [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…Organic sulfur compounds in the soil are mainly sulfate ester and carbon-bonded S, and their conversion to mineral forms involves biochemical and biological mineralization, respectively; see, e.g., [ 15 , 16 , 17 ]. The hydrolysis of the ester-bonded S fraction of SOM by extracellular sulfatase enzymes in plant roots or microbes increases if a low amount of mineral S-SO 4 occurs in the soil solution, while the oxidation of the C-bonded S fraction requires direct microbial activity and is driven by its need for organic carbon to provide energy [ 17 , 18 ]. According to this model, factors such as the plant species [ 6 ] and S fertilizer can affect the degradation process of SOM [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Various Forms of Sulfur on Soil Organic Matter Fractions and Microorganisms in a Pot Experiment with Perennial Ryegrass (Lolium perenne L.)

Magnucka,

Kulczycki,

Oksińska

et al. 2023

Plants

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This article focuses on the agronomic evaluation of the supplementation of mineral NPKMg fertilizers with elemental sulfur, magnesium, potassium, or ammonium sulfates in pot experiments with ryegrass growing in a sandy Arenosol with very low sulfur content. A benefit evaluation was carried out on the basis of biomass production, crop nutritional status, and changes in the content of soil organic matter fractions. Furthermore, the total number of bacteria, nitrogen-fixing bacteria, and fungi was estimated using the qPCR technique in soil samples after 60 days of ryegrass growth. The combined application of NPKMg and sulfur or sulfate fertilizers significantly increased the summary yield of three cuttings of fresh ryegrass biomass in the range of 32.3% to 82.7%. The application, especially in the form of sulfates, significantly decreased the content of free phenolic acids. Furthermore, compared to the control, i.e., soil with NPKMg applied alone, an increase in the content of glomalin-related proteins and a decrease in the amount of water-soluble organic carbon compounds were observed. Neither the number of DNA marker copy numbers of the total bacterial community nor the nitrogen-fixing bacteria were noticeably different. In turn, the total number of genetic markers for fungi was significantly higher in soils with potassium or ammonium sulfates compared to the control soil. The general results suggest that the application of sulfur fertilizers with NPKMg mineral fertilizer can benefit crops and support soil fertility due to the stabilization of aggregates and the decrease in water-soluble organic compounds.

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