Available C and N affect the utilization of glycine by soil microorganisms

Yang, Lo; Zhang, Lili; Geisseler, Daniel; Wu, Zhijie; Gong, Ping; Xue, Yan; Yu, Chenggang; Yang, Juan; Horwáth, William R.

doi:10.1016/j.geoderma.2016.07.022

Cited by 50 publications

(21 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The transformation and absorption of soil N is conducted by enzyme systems, and their synthesis and expression require C, N, and energy, suggesting that the form of available N, the source of C, and the C availability in relation to N are important factors ( Yang, Zhang & Geisseler, 2016 ). It is generally believed that all organic N is mineralized to NH before being absorbed by soil microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Ma¹,

Wang²,

Peng³

et al. 2021

PeerJ

View full text Add to dashboard Cite

The objective of this experiment was to study the effect of cotton residues incorporation on soil properties, soil organic nitrogen (N) fractions, and N-mineralizing enzyme (protease, and urease) activity in the 0–40 cm soil layer in the long-term continuous cotton field. In this experiment, seven treatments, including cotton residues incorporation for 5, 10, 15 and 20 years (marked as 5a, 10a, 15a, and 20a) and continuous cropping for 5, 10 and 20 years (marked as CK5, CK10 and CK20) were conducted. The results showed that the soil organic carbon (C) and N increased gradually with the increase in the duration of continuous cropping with cotton residues incorporation. Compared with CK20, the 20a treatments reduced the content of amino acid N (AAN), ammonium N (AN), amino sugar N (ASN), hydrolysable unidentified N (HUN), and acid insoluble N (AIN) significantly by 48.6, 32.2, 96.9, 48.3, and 38.7%, respectively (p < 0.05). The activity of protease and urease in 20a treatments significantly increased by 53.4 and 53.1% respectively as compared to CK20 (p < 0.05). Soil organic C and N-mineralizing enzyme activity decreased with the increase in cropping duration in the absence of cotton residues incorporation, while the organic N increased slightly. In conclusion, cotton residues returning can increase the storage of soil organic C and N in long-term continuous cropping cotton field, and improve the soil quality and soil fertility of continuous cropping cotton field.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Ma¹,

Wang²,

Peng³

et al. 2021

PeerJ

View full text Add to dashboard Cite

show abstract

“…Limited bacteria quantities in soil decreased available nutrients production, such as N and P, which may, in turn, restrict the population of microbes and affect the rates of the C decomposition process [44,45]. Related reports have revealed that soil available C and N affect the pivotal process of microbial growth, and N-assimilation that driven by soil microorganisms mostly occurs in the NH 4 + –N of inorganic N and alanine of organic N [46,47,48]. The microflora is positively correlated with soil C and available nutrients, and soil nutrients are conducive to increasing the abundance of soil microorganisms [49,50].…”

Section: Discussionmentioning

confidence: 99%

Integrated Effects of Co-Inoculation with Phosphate-Solubilizing Bacteria and N2-Fixing Bacteria on Microbial Population and Soil Amendment Under C Deficiency

Wang¹,

Chen²,

Fu³

2019

IJERPH

View full text Add to dashboard Cite

The inoculation of beneficial microorganisms to improve plant growth and soil properties is a promising strategy in the soil amendment. However, the effects of co-inoculation with phosphate-solubilizing bacteria (PSB) and N2-fixing bacteria (NFB) on the soil properties of typical C-deficient soil remain unclear. Based on a controlled experiment and a pot experiment, we examined the effects of PSB (M: Bacillus megaterium and F: Pseudomonas fluorescens), NFB (C: Azotobacter chroococcum and B: Azospirillum brasilence), and combined PSB and NFB treatments on C, N, P availability, and enzyme activities in sterilized soil, as well as the growth of Cyclocarya Paliurus seedlings grow in unsterilized soil. During a 60-day culture, prominent increases in soil inorganic N and available P contents were detected after bacteria additions. Three patterns were observed for different additions according to the dynamic bacterial growth. Synergistic effects between NFB and PSB were obvious, co-inoculations with NFB enhanced the accumulation of available P. However, decreases in soil available P and N were observed on the 60th day, which was induced by the decreases in bacterial quantities under C deficiency. Besides, co-inoculations with PSB and NFB resulted in greater performance in plant growth promotion. Aimed at amending soil with a C supply shortage, combined PSB and NFB treatments are more appropriate for practical fertilization at intervals of 30–45 days. The results demonstrate that co-inoculations could have synergistic interactions during culture and application, which may help with understanding the possible mechanism of soil amendment driven by microorganisms under C deficiency, thereby providing an alternative option for amending such soil.

show abstract

“…In a managed agroecosystem with annual fertilization, the available N provided from the subsequent application of mineral fertilizer was more available for plant and soil microorganisms, thus reducing the utilization of the accumulated residual fertilizer‐N. In such soil habitats, where N is usually not a limiting factor for microbial growth, the assimilation of complex and polymeric maize residue‐N constituents of soil microorganisms was primarily to meet their C requirement instead of meeting the N demand (Farrell et al, ; Geisseler & Horwath, ; Yang et al, ). Compared with annual maize residue mulching, the lack of subsequent maize residue return did not influence microbial utilization of the initially applied maize residue‐N despite the decreased C availability in the habitat (Table S4).…”

Section: Discussionmentioning

confidence: 99%

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis

Zhao

Liu³

et al. 2019

European J Soil Science

View full text Add to dashboard Cite

In agroecosystems, both fertilizer‐nitrogen (N) and crop residue‐N make important contributions to soil‐N retention. However, how different N sources are dynamically involved in microbial processes and how they govern soil‐N transformations is poorly understood. A field experiment with half‐yield maize residue mulching was conducted in an Alfisol. The 15N‐labelled fertilizer and maize (Zea mays L.) residue were applied in the first year and then unlabelled ones were used in the following 4 years. The origins of newly formed fungal and bacterial residues were investigated by amino sugar‐specific 15N analysis. The aim was to gain insights into the microbial transformation dynamics of fertilizer‐N and maize residue‐N, as well as the maintenance of these exogenous N sources in soil. The initial transformation of fertilizer‐N into amino sugars was much more rapid than that of maize residue‐N. However, the eventual accumulation of maize residue‐N in amino sugars was significantly greater than that of fertilizer‐N. The transformation of maize residue‐15N into amino sugars was 3.5–6.7 times higher than that of fertilizer‐15N over the course of 5 years, implying a higher immobilization of maize residue‐derived N than fertilizer‐derived N in the soil. The effective transformation of maize residue‐N into microbial residues and the low level of maize residue‐derived mineral N accumulation suggested that a direct route probably dominated the microbial process. Moreover, the maize residue‐derived fungal glucosamine was more apt to accumulate than muramic acid, compared with that derived from fertilizer, suggesting that fungi contributed more to the direct assimilation of maize residue‐derived N. Such a pattern was mostly attributed to fungal decomposition of less bioavailable components of maize residue. Thus, maize residue‐N played a significant role in building soil organic N reserves, being a sustaining foundation for the effective utilization of fertilizer‐N by crops. Highlights Fungal and bacterial residues derived from maize residue‐N and fertilizer‐N were investigated. Fungi dominated maize residue‐N immobilization mostly via direct route. Maize residue‐N had higher microbial immobilization efficiency than fertilizer‐N. Maize residue‐N contributed dominantly to the building of soil organic N pool.

show abstract

Available C and N affect the utilization of glycine by soil microorganisms

Cited by 50 publications

References 43 publications

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Integrated Effects of Co-Inoculation with Phosphate-Solubilizing Bacteria and N2-Fixing Bacteria on Microbial Population and Soil Amendment Under C Deficiency

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis

Contact Info

Product

Resources

About

Available C and N affect the utilization of glycine by soil microorganisms

Cited by 50 publications

References 43 publications

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Effect of cotton residues incorporation on soil properties, organic nitrogen fractions, and nitrogen-mineralizing enzyme activity under long-term continuous cotton cropping

Integrated Effects of Co-Inoculation with Phosphate-Solubilizing Bacteria and N2-Fixing Bacteria on Microbial Population and Soil Amendment Under C Deficiency

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific 15N analysis

Contact Info

Product

Resources

About

Comparing microbial transformation of maize residue‐N and fertilizer‐N in soil using amino sugar‐specific ¹⁵N analysis