Improvement of nitrogen and phosphorus availability by Pseudoalteromonas sp. during salt-washing in saline-alkali soil

Liu, Zhe; Shang, Hongguo; Han, Fang; Zhang, Mengru; Li, Qian; Zhou, Weizhi

doi:10.1016/j.apsoil.2021.104117

Cited by 36 publications

(14 citation statements)

References 43 publications

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“…, and UA were significantly correlated with change in bacterial community composition in 13 saline soils. The soil pH account for 32.1% of variance in bacterial community, and acted as the most important driver in bacterial community, in consistent with other finding [11,20,34]. In addition, TS was an important factor affecting change in microbial community composition in saline soils in this study, as also reported by Rath et al [30].…”

Section: Effects Of Soil Properties On the Dominant Bacterial Phyla And Bacterial Community Structuresupporting

confidence: 92%

“…The Actinobacteria and Acidobacteria have been depicted as common inhabitants of all soils [18,44]. Furthermore, Actinomycetes can significantly inhibit the activities of some plant pathogenic fungi, and can also promote the germination of seeds and the growth of plant roots [20]. Halobacteria was the dominant bacterial class in all soils except for MS.ST, OS.CT, OS.ST, and BS.CT.…”

Section: Bacterial Community Diversity and Structurementioning

confidence: 95%

“…Soil salinization has become a worldwide problem that menaces the growth and yield of crops and impedes the development of modern agricultural sustainability [20]. In Gansu Province of China, about 1.02 × 10 6 hm 2 of cropping land are affected by soil salinity or sodicity [15], the salinity is mainly of sulfate-type saline soil (37.9%) or chloride -sulfate -type saline soil (35.3%).…”

Section: Introductionmentioning

confidence: 99%

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Diversity of bacterium communities in saline-alkali soil in arid regions of Northwest China

et al. 2022

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Background The saline-alkali soil area accounts for over 1/4-1/5 of the land area in Gansu Province of China, which are mainly distributed in the north of Hexi corridor and Jingtai basin. The unique ecological environment contains unique and diverse microbial resources. The investigation of microbial diversity in saline environment is vital to comprehend the biological mechanisms of saline adaption, develop and utilize microbial resources. Results The Illumina MiSeq sequencing method was practiced to investigate the bacterial diversity and composition in the 5 subtypes and 13 genera of saline-alkali soil in Gansu Province, China. The results from this study show that Proteobacteria, Bacteroidetes, Actinobacteria, Firmicutes, and Gemmatimonadetes were the dominant bacterial groups in 13 saline soil. Proteobacteria had the greatest abundance in sulfate-type meadow solonchaks and orthic solonchaks, chloride-type orthic solonchaks and bog solonchaks, sulfate-chloride-type, chloride-sulfate-type, and sulfate-type dry solonchaks. Halobacteria was the dominant bacterial class in soil samples except for sulfate-type meadow solonchaks and orthic solonchaks, chloride-type orthic solonchaks and bog solonchaks. The richness estimators of Ace and Chao 1 and the diversity indices of Shannon and Simpson revealed the least diversity in bacterial community in sulfate-chloride-type orthic solonchaks. Conclusions The sulfate anion was the most important driving force for bacterial composition (17.7%), and the second most influencing factor was pH value (11.7%).

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Section: Effects Of Soil Properties On the Dominant Bacterial Phyla And Bacterial Community Structuresupporting

confidence: 92%

Section: Bacterial Community Diversity and Structurementioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Diversity of bacterium communities in saline-alkali soil in arid regions of Northwest China

et al. 2022

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“…It was reported that biochar application significantly increased the abundance of AOB and AOA, and the rate and dynamics of nitrification were closely associated with the rate of biochar application [17]. In addition to the abundance, the community structures of AOB and AOA are altered by biochar addition in salt-affected soil, and the dominant genera Nitrosospira, Nitrosomonas, Nitrosovibrio, Nitrososphaera and Nitrosopumilus are the most frequently reported taxa that were sensitive to biochar addition [18]. It was also reported that biochar addition increased the diversity and abundance of amoA-AOB gene and shifted the AOB community structure from Nitrosospira-dominated toward Nitrosomonasdominated [19].…”

Section: Introductionmentioning

confidence: 99%

Biochar Addition Inhibits Nitrification by Shifting Community Structure of Ammonia-Oxidizing Microorganisms in Salt-Affected Irrigation-Silting Soil

Yao

Yang

et al. 2022

Microorganisms

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Biochar has been widely recognized as an effective and eco-friendly ameliorant for saline soils, but information about the mechanism of how biochar influences nitrification in salt-affected agroecosystem remains fragmented. An incubation experiment was performed on the salt-affected soil collected from a three-consecutive-year experiment at biochar application gradients of 7.5 t⋅ha−1, 15 t⋅ha−1 and 30⋅t ha−1 and under nitrogen (N) fertilization. Responses of the nitrification rate (NR), numbers of ammonia monooxygenase (amoA) gene copies, and community structures of ammonia-oxidizing bacteria (AOB) and archaea (AOA) to biochar application were investigated. The results indicated that, under N fertilization, the NR and numbers of amoA-AOB and amoA-AOA gene copies negatively responded to biochar addition. Biochar application increased the community diversity of AOB but decreased that of AOA. Biochar addition and N fertilization shifted the AOB community from Nitrosospira-dominated to Nitrosospira and Nitrosomonas-dominated, and altered the AOA community from Nitrososphaera-dominated to Nitrososphaera and Nitrosopumilus-dominated. The relative abundance of Nitrosospira, Nitrosomonas and Nitrosopumilus decreased, and that of Nitrosovibrio and Nitrososphaera increased with biochar application rate. Soil SOC, pH and NO3−-N explained 87.1% of the variation in the AOB community, and 78.1% of the variation in the AOA community was explanatory by soil pH and SOC. The SOC and NO3−-N influenced NR through Nitrosovibrio, Nitrosomonas, Norank_c_environmental_samples_p_Crenarchaeota and amoA-AOB and amoA-AOA gene abundance. Therefore, biochar addition inhibited nitrification in salt-affected irrigation-silting soil by shifting the community structures of AOB and AOA and reducing the relative abundance of dominant functional ammonia-oxidizers, such as Nitrosospira, Nitrosomonas and Nitrosopumilus.

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“…The mineralization rate and active N pools of SON largely determine soil N availability and N cycle in the agricultural system (Hartmann et al, 2014). Soil N availability, defined as the biological N turnover (mineralization of the SON to inorganic forms) capacity, has been widely used in an agroecosystem (Li et al, 2019;Liu et al, 2021;Waring & Bremmer, 1964). Crop residue return has been widely recommended as a sustainable management practice to enrich soil organic matter and nutrient availabilities (Medhn et al, 2020;Zhao et al, 2020a).…”

Section: Introductionmentioning

confidence: 99%

Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

Zhi

Liu

et al. 2022

Land Degrad Dev

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Soil organic nitrogen (SON) and its mineralization are among the most critical factors that affect soil N availability. However, it is unclear how crop residue return and chemical N fertilization affect soil N availability by altering SON and its mineralization. Therefore, we studied the SON pools, SON mineralization, and related soil properties and enzymes activities in the lower reaches of the Yangtze River Valley in China with stand ages of 7‐year N (0, 75, 150, and 300 kg N ha−1) fertilization and 4‐year barley‐cotton residue return. Regardless of residue retention or removal, the contents of total SON and its fractions (ammonium N, amino acid N, amino sugar N, and unidentified N) increased consistently with the increasing of N input, while SON mineralization, microbial biomass N content, urease and protease activities showed a curvilinear response that was highest at N rate of 150 kg N ha−1. Crop residue returning significantly increased SON content under 75 and 150 kg N ha−1, mostly due to the increase of amino acids N. Other variables, such as SON mineralization, microorganism, and enzymes, were also enhanced by residue returning, and the largest increases were observed at 150 kg N ha−1. In addition, our result also show that excessive N input (300 kg N ha−1) would reduce soil N availability by mainly suppressing microbial N processes. We concluded that crop residue combined with appropriate N has a great potential to improve soil N availability by mainly improving amino acid N content and SON mineralization.

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Improvement of nitrogen and phosphorus availability by Pseudoalteromonas sp. during salt-washing in saline-alkali soil

Cited by 36 publications

References 43 publications

Diversity of bacterium communities in saline-alkali soil in arid regions of Northwest China

Diversity of bacterium communities in saline-alkali soil in arid regions of Northwest China

Biochar Addition Inhibits Nitrification by Shifting Community Structure of Ammonia-Oxidizing Microorganisms in Salt-Affected Irrigation-Silting Soil

Crop residue return improved soil nitrogen availability by increasing amino acid and mineralization under appropriate N fertilization

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