Environmental factors regulate soil microbial attributes and their response to drought in rangeland ecosystems

Toledo, Santiago; Bondaruk, Viviana F.; Yahdjian, Laura; Oñatibia, Gastón R.; Loydi, Alejandro; Alberti, Juan; Bruschetti, Martín; Pascual, Jesús; Peter, Guadalupe; Agüero, Walter D.; Namur, Pedro R.; Blanco, Lisandro J.; Peri, Pablo Luís

doi:10.1016/j.scitotenv.2023.164406

Cited by 9 publications

(6 citation statements)

References 118 publications

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“…Soil factors, being pivotal constituents that exert a profound influence on the growth and development of vegetation, also exert a strong impact on the differentiation of ecological niches. Simultaneously, the decomposition function of soil microorganisms exerts a significant influence on the transformation of soil nutrients and the growth of aboveground vegetation [55,56]. Research findings suggest that a higher soil bacterial diversity index corresponds to greater resistance to environmental stress, thereby fostering a more stable micro-ecological function in the soil [57].…”

Section: Soil Bacterial Communities and Diversity In H Ammodendron Fo...mentioning

confidence: 99%

“…The functional structure of microbial communities is intricately linked to the environmental factors present in their respective habitats [56,60,69]. Particularly, the physicochemical properties of soil exert a profound influence on the composition and diversity of microbial communities, particularly in the face of the rapid and far-reaching effects of global climate change.…”

Section: Effects Of Soil Physicochemical Factors On the Structure And...mentioning

confidence: 99%

“…Secondly, Gemmatimonadetes, known for its remarkable capacity to solubilize potassium, phosphorus, and other elements, facilitates the uptake of available nutrients by plants from the soil. The growth of Gemmatimonadetes in H. ammodendron forests enhances the absorption and utilization of available soil nutrients by H. ammodendron, thereby potentially accounting for the significant influence of available potassium content on the soil bacterial community structure in H. ammodendron forests [56,77]. Moreover, the study of global geographical patterns necessitates the consideration of soil pH as a pivotal determinant, as it exerts a profound influence on the characteristics of bacterial communities.…”

Section: Effects Of Soil Physicochemical Factors On the Structure And...mentioning

confidence: 99%

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Soil Bacterial Community Structure and Physicochemical Influencing Factors of Artificial Haloxylon ammodendron Forest in the Sand Blocking and Fixing Belt of Minqin, China

Wang,

Ma,

et al. 2023

Forests

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Microbial activity plays a crucial role in upholding the functional stability of vegetation–soil ecosystems. Nevertheless, there exists a paucity of studies concerning the impact of sand-fixing vegetation (Haloxylon ammodendron) on the structure and functional attributes of soil microbial communities. We employed Illumina high-throughput sequencing and PICRUSt2 functional prediction technology to investigate the characteristics of soil bacterial community structure, diversity, and metabolic functions in an artificial H. ammodendron forest, and RDA analysis and the Mantel test were used to reveal the main environmental factors affecting the structure and ecological functions of soil bacterial communities. The findings revealed a significant increase in the principal nutrient contents (organic matter, total nitrogen, total phosphorus) in the H. ammodendron forest soil compared to the mobile dune soil, while a reduction of 17.17% in the surface soil water content was observed. The H. ammodendron forest exhibited a significant enhancement in the diversity and richness index of soil bacteria. Specifically, Actinobacteria (24.94% ± 11.85%), Proteobacteria (29.99% ± 11.56%), and Chloroflexi (11.14% ± 4.55%) emerged as the dominant bacterial phyla, with Actinobacteria displaying significantly higher abundance compared to the mobile dune soil. PICRUSt2 analyses revealed that the predominant secondary metabolic functions of soil bacteria were carbohydrate metabolism, amino acid metabolism, and the metabolism of cofactors and vitamins. Additionally, the tertiary metabolic pathways exhibited greater activity in relation to enzyme function, nucleotide metabolism, energy metabolism, and antibiotics. The RDA results demonstrated that SOM, AK, and pH collectively accounted for 82.4% of the cumulative contribution, significantly influencing the bacterial community. Moreover, the Mantel test revealed that the metabolic function of soil bacteria primarily relied on five environmental factors, namely SOM, TN, AK, pH, and EC. This study significantly advances our understanding of the structural and functional changes in soil bacterial communities during the reclamation of sandy land through the establishment of artificial H. ammodendron forests.

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Section: Soil Bacterial Communities and Diversity In H Ammodendron Fo...mentioning

confidence: 99%

Section: Effects Of Soil Physicochemical Factors On the Structure And...mentioning

confidence: 99%

Section: Effects Of Soil Physicochemical Factors On the Structure And...mentioning

confidence: 99%

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Soil Bacterial Community Structure and Physicochemical Influencing Factors of Artificial Haloxylon ammodendron Forest in the Sand Blocking and Fixing Belt of Minqin, China

Wang,

Ma,

et al. 2023

Forests

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“…The functional structure of microbial communities is intricately linked to the environmental factors present in their respective habitats [ 53 – 55 ]. In this study, we used PICRUSt2 to predict the function of epiphytic and endophytic microbial communities of C. oleifera .…”

Section: Discussionmentioning

confidence: 99%

Epiphytic and endophytic bacteria on Camellia oleifera phyllosphere: exploring region and cultivar effect

Chen,

Li,

2024

BMC Ecol Evo

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The epiphytic and endophytic bacteria play an important role in the healthy growth of plants. Both plant species and growth environmental influence the bacterial population diversity, yet it is inconclusive whether it is the former or the latter that has a greater impact. To explore the communities of the epiphytic and endophytic microbes in Camellia oleifera, this study assessed three representative C. oleifera cultivars from three areas in Hunan, China by Illumina high-throughput sequencing. The results showed that the diversity and species richness of endophytic microbial community in leaves were significantly higher than those of microbial community in the epiphytic. The diversity and species richness of epiphytic and endophytic microbes are complex when the same cultivar was grown in different areas. The C. oleifera cultivars grown in Youxian had the highest diversity of epiphytic microbial community, but the lowest abundance, while the cultivars grown in Changsha had the highest diversity and species richness of endophytic microbes in leaves. It was concluded that the dominant phylum mainly included Proteobacteria, Actinobacteriota and Firmicutes through the analysis of the epiphytic and endophytic microbial communities of C. oleifera. The species and relative abundances of epiphytic and endophytic microbial community were extremely different at the genus level. The analysis of NMDS map and PERMANOVA shows that the species richness and diversity of microbial communities in epiphytes are greatly influenced by region. However, the community structure of endophytic microorganisms in leaves is influenced by region and cultivated varieties, but the influence of cultivars is more significant. Molecular ecological network analysis showed that the symbiotic interaction of epiphytic microbial community was more complex.

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“…Microorganisms are the most active component of soil ecosystem, which can make timely response and feedback to soil ecosystem (Toledo et al, 2023;Zhao et al, 2023). The diversity and composition of soil microbial communities play a crucial role in preserving soil health and quality.…”

Section: Introductionmentioning

confidence: 99%

Impact of wine-grape continuous cropping on soil enzyme activity and the composition and function of the soil microbial community in arid areas

Song,

Zhu,

et al. 2024

Front. Microbiol.

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IntroductionContinuous cropping affected the stability of soil enzyme activity and the structural characteristics of microbial community. Owing to challenges in the study of complex rhizosphere microbial communities, the composition and function of these microbial communities in farmland ecosystems remain elusive. Here, we studied the microbial communities of the rhizosphere of wine grapes with different years of continuous cropping and investigated their relationships with soil enzyme activity.MethodsMetagenomic sequencing was conducted on the rhizosphere soils from one uncultivated wasteland and four vineyards with varying durations of continuous cropping.ResultsThe predominant microbial were bacteria (98.39%), followed by archaea (1.15%) and eukaryotes (0.45%). Continuous cropping caused a significant increase in the relative abundance of Rhizobiales and Micrococcales but a marked decrease in Solirubrobacterales. At the genus level, 75, 88, 65, 132, and 128 microbial genera were unique to uncultivated wasteland, 5, 10, 15, and 20 years of continuous cropping, respectively. The relative abundance of genes with signal transduction function was the highest. The activity of all enzymes measured in this study peaked at 5 years of continuous cropping, and then decreased with 10 to 15 year of continuous cropping, but increased at 20 years again. In addition, soil enzyme activity, especially of alkaline phosphatase was significantly correlated with the diversity of the dominant microorganisms at the genus level. Moreover, the coupled enzyme activities had a greater impact on the diversity of the microbial community than that of individual enzymes.ConclusionOur findings reveal the composition and function of the soil microbial communities and enzymes activity in response to changes in cropping years, which has important implications for overcoming continuous cropping obstacles and optimizing land use.

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Environmental factors regulate soil microbial attributes and their response to drought in rangeland ecosystems

Cited by 9 publications

References 118 publications

Soil Bacterial Community Structure and Physicochemical Influencing Factors of Artificial Haloxylon ammodendron Forest in the Sand Blocking and Fixing Belt of Minqin, China

Soil Bacterial Community Structure and Physicochemical Influencing Factors of Artificial Haloxylon ammodendron Forest in the Sand Blocking and Fixing Belt of Minqin, China

Epiphytic and endophytic bacteria on Camellia oleifera phyllosphere: exploring region and cultivar effect

Impact of wine-grape continuous cropping on soil enzyme activity and the composition and function of the soil microbial community in arid areas

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