Reclamation of abandoned saline-alkali soil increased soil microbial diversity and degradation potential

Yin, Fating; Zhang, Fenghua

doi:10.1007/s11104-022-05451-z

Cited by 14 publications

(7 citation statements)

References 73 publications

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“…After adding 5% humic acid-magnetic biochar, the soil moisture content is the highest, which is 13.85%, increased by 3.76%. This proves that the addition of biochar can effectively improve the waterholding capacity of saline-alkali soil, consistent with previous research results [30,31]. The addition of biochar increases saline-alkali soil's cation exchange capacity, and the humic acid-magnetic biochar group's change is the most significant, which is the same as previous research results [32,33].…”

Section: Results and Analysis Of Soil Remediation By Modified Biocharsupporting

confidence: 91%

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Wang

et al. 2023

Sustainability

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To solve the problem of soil degradation in coastal saline–alkali land, three different types of biochar (rice straw biochar, magnetic biochar, and humic acid–magnetic biochar) were prepared to remedy the saline–alkali soil under different mixing ratios. The effects of biochar on the growth of crops in saline–alkali soil were explored through a pot experiment on Chinese cabbage. The experimental results showed that the soil leaching treatment combined with humic acid–magnetic biochar could effectively repair the coastal saline–alkali soil. After adding 5% humic acid–magnetic biochar, the content of soil organic matter was 33.95 g/kg, the water content was 13.85%, and the contents of available phosphorus and available potassium were 9.43 mg/kg and 29.51 mg/kg. After adding 5% humic acid–magnetic biochar, the plant height of Chinese cabbage was 9.16 ± 0.19 cm, and the plant germination rate reached 83.33 ± 5.54%. The incorporation of biochar could effectively increase the chlorophyll content and soluble protein content of pakchoi and reduce the soluble sugar content of pakchoi. The study analyzed the effect of different modified biochar on saline–alkali land restoration and crop growth and explored the action rule of hydrochloric acid magnetic biochar on saline–alkali land restoration, which has important practical value for improving coastal saline–alkali land.

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Section: Results and Analysis Of Soil Remediation By Modified Biocharsupporting

confidence: 91%

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Wang

et al. 2023

Sustainability

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“…The CAZyme gene abundances may reflect the C cycling potential of a microbial community. Therefore, in this study annotation with the CAZy database was used to reveal the functional shifts in soil microbial communities following vegetation changes such as been done previously for the conversion of cropland to plantation (Zhang and Lv 2020), reclamation of saline-alkali soil (Yin and Zhang 2022) and afforestation of farmland (Ren et al, 2021). Previous studies have provided CAZy annotations of soil metagenomes in grasslands (Howe et al, 2016;Noronha et al, 2017;Yeager et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Variation in microbial CAZyme families across degradation severity in a steppe grassland in northern China

Zhang

Duan

et al. 2023

Front. Environ. Sci.

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Little is known about the effects of grassland degradation on the carbohydrate-active enzyme (CAZYme) genes responsible for C cycling. Here we used a metagenomic approach to reveal variation in abundance and composition of CAZyme genes in grassland experiencing a range of degradation severity (i.e., non-, light, moderately, and severely degraded) in two soil layers (0–10 cm, 10–20 cm) in a steppe grassland in northern China. We observed a higher CAZyme abundance in severely degraded grassland compared with the other three degradation severities. Glycoside hydrolase (GH) and glycosyltransferase (GT) were identified as the most abundant gene families. The Mantel test and variation partitioning suggested an interactive effect of degradation severity and soil depth with respect to CAZyme gene composition. Structural equation modeling indicated that total soil carbon, microbial biomass carbon and organic carbon were the three soil characteristics most important to CAZyme abundance, which suggests an interaction between degradation and soil carbon fractions in determining CAZyme gene composition. Both above- and below-ground factors linked to soil organic matter play a central role in determining the abundance of CAZyme gene families.

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“…The turnover of plants and microbial biomass represents a key step in the carbohydrate decomposition and can be tracked by analyzing microbial enzymes and carbohydrate-active enzymes (CAZymes) [15,16]. CAZymes can be classified as glycoside hydrolases (GHs), glycosyl transferases (GTs), polysaccharide lyases (PLs), carbohydrate esterases (CEs), auxiliary activities (AAs), and carbohydrate-binding modules (CBMs) based on the similarity of amino acid sequences in the protein domains [17]. Specifically, genes encoding several GH families in CAZymes are the degradation of plant biomass and microbial biomass including chitinases and peptidoglycan lytic transglycosylase and GT families are primarily involved in biosynthesis of disaccharides, oligosaccharides, and polysaccharides [16,18].…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, genes encoding several GH families in CAZymes are the degradation of plant biomass and microbial biomass including chitinases and peptidoglycan lytic transglycosylase and GT families are primarily involved in biosynthesis of disaccharides, oligosaccharides, and polysaccharides [16,18]. PLs are involved in the degradation of glycosaminoglycans and pectin by cleaving the glycosidic bonds of uronic acid-containing polysaccharides and CEs dislodge ester-based modifications present in mono-, oligo-, and polysaccharides [17,19,20]. Some genes encoding AA families in CAZymes are associated with lignin decomposition, and CBMs can associate CAZymes with carbohydrate-related substrates [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the abundance of the CAZyme genes are affected by several factors, including SOC, Total nitrogen (TN), Na + , and K + , which influence the decomposition potential [9,17]. Previous studies have shown that the carbon-nitrogen ratio, temperature, soil water content, soil pH, and normalized difference vegetation index (NDVI) are the main factors influencing the enrichment of carbohydrate enzyme genes [16,18,23].…”

Section: Introductionmentioning

confidence: 99%

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Different Response of Plant- and Microbial-Derived Carbon Decomposition Potential between Alpine Steppes and Meadows on the Tibetan Plateau

Yang

Chen

Liu

et al. 2023

Forests

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The alpine grasslands account for approximately 54.5% of the total carbon in China’s grasslands, and carbohydrate-active enzymes (CAZymes) play key roles in the turnover of carbon. However, the variation and factors influencing gene-encoding enzymes for plant- and microbial-derived carbon decomposition in alpine steppes and alpine meadows remain unclear. Here, the trends in microbial carbohydrate-active enzymes (CAZymes) and their responses to the decomposition of biomass of different origins were studied using metagenomics in the alpine steppes and alpine meadows on the Tibetan Plateau. Our results revealed the abundance of GTs and CBMs was higher in the alpine steppes than in the alpine meadows, whereas AAs were higher in the alpine steppes than in the alpine meadows. Soil properties (i.e., soil water content, soil ammonium nitrogen, and nitrate nitrogen) highly related to CAZyme genes (GTs, CBMs, and AAs) showed an abundant pattern between the alpine steppes and alpine meadows. Moreover, our results indicated that the relative abundance of genes encoding CAZymes involved in the decomposition of plant- (indicated by cellulose, hemicellulose, and lignin) and fungal-derived carbon (indicated by chitin and glucans) was higher by 8.7% and 10.1%, respectively, in the alpine steppes than in the alpine meadows, whereas bacterial-derived carbon (indicated by peptidoglycan) was lower by 7.9% in the alpine steppes than in the alpine meadows. Soil water content (SWC), nitrate nitrogen (NO3−), and pH influenced on the abundance of CAZyme genes involved in the decomposition of plant-, fungal-, bacterial-derived carbon. In addition, the dominant microbial phyla (Actinobacteria, Protebacteria, and Acidobacteria) mineralized carbon sources from plant- and microbial-derived carbon through their corresponding CAZyme families. In conclusion, our study compared plant- and microbial-derived carbon decomposition potentials and influencing factors to illustrate the contribution of dead biomass to carbon accumulation in alpine grasslands.

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Reclamation of abandoned saline-alkali soil increased soil microbial diversity and degradation potential

Cited by 14 publications

References 73 publications

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Variation in microbial CAZyme families across degradation severity in a steppe grassland in northern China

Different Response of Plant- and Microbial-Derived Carbon Decomposition Potential between Alpine Steppes and Meadows on the Tibetan Plateau

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