Soil properties, bacterial community composition, and metabolic diversity responses to soil salinization of a semiarid grassland in northeast China

Zhang, Y.; Cao, Chengyou; Guo, Lingke; Wu, Qian; Cui, Zhiwei

doi:10.2489/jswc.70.2.110

Cited by 30 publications

(15 citation statements)

References 59 publications

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“…In this region, several environmental problems such as soil salinization, alkalinization, and desertification occur due to soil parent material, hydrological conditions, and overgrazing (Zhou et al, 2011). The annual rainfall exceeds the potential evaporation and poor management such as overgrazing and irrational utilization are common in the area (Gao and Liu, 2010;Liu et al, 2011a); thus, the affected alkali-saline area has been increasing in size by 20,000 ha per year (Zhang et al, 2015). Not only about two-thirds of the land in this area is salinized, but also increased by 1.5-2% annually (Ma et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Several recent studies on the composition of soil microbial diversity in saline soils revealed that soil salinization had negative effects not merely on soil biochemical properties, but also on the structure of microbial communities (Foti et al, 2007;Yuan et al, 2007;Hidri et al, 2013;Wang et al, 2014;Zhang et al, 2015). Regarding the soil microbial community in saline soils of Songnen Plain, only some representative new species of halophilic and halotolerant bacteria and archaea have been reported by pure culture methods (Wu et al, 2008;Wang et al, 2010;Liu et al, 2011b;He et al, 2014;Pan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

et al. 2020

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Songnen Plain is originally one of the three major glasslands in China and has now become one of the three most concentrated distribution areas of sodic-saline soil worldwide. The soil is continuously degraded by natural and anthropogenic processes, which has a negative impact on agricultural production. The investigation of microbial diversity in this degraded ecosystem is fundamental for comprehending biological and ecological processes and harnessing the potential of microbial resources. The Illumina MiSeq sequencing method was practiced to investigate the bacterial diversity and composition in saline-alkali soil. The results from this study show that the change in pH under alkaline conditions was not the major contributor in shaping bacterial community in Songnen Plain. The electrical conductivity (EC) content of soil was the most important driving force for bacterial composition (20.83%), and the second most influencing factor was Na + content (14.17%). Bacterial communities were clearly separated in accordance with the EC. The dominant bacterial groups were Planctomycetes, Proteobacteria, and Bacteroidetes among the different salinity soil. As the salt concentration increased, the indicators changed from Planctomycetes and Bacteroidetes to Proteobacteria and Firmicutes. Our results suggest that Proteobacteria and Firmicutes were the main indicator species reflecting changes of the main microbial groups and the EC as a key factor drives the composition of the bacterial community under alkaline conditions in saline-alkali soil of Songnen Plain.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

et al. 2020

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“…Furthermore, a large native meadow grassland lies in the Wulanaodu region and supports the production of local animal husbandry. The meadow grassland is typically used as clipping pastures, which are enclosed during the growing season (from April to late September) and openly grazed after the grasses are harvested (Zhang et al, 2015). In recent decades, the grasslands have been seriously degraded because of climate change, overgrazing, and the aridification of the habitat (Cao et al, 2006); a vast area of the degraded meadow grasslands was converted to farmland.…”

Section: Study Location and Site Descriptionmentioning

confidence: 99%

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

et al. 2017

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Abstract. The conversion of natural grassland into agricultural fields is an intensive anthropogenic perturbation commonly occurring in semiarid regions, and this perturbation strongly affects soil microbiota. In this study, the influences of land-use conversion on the soil properties and bacterial communities in the Horqin Grasslands in Northeast China were assessed. This study aimed to investigate (1) how the abundances of soil bacteria changed across land-use types, (2) how the structure of the soil bacterial community was altered in each land-use type, and (3) how these variations were correlated with soil physical and chemical properties. Variations in the diversities and compositions of bacterial communities and the relative abundances of dominant taxa were detected in four distinct land-use systems, namely, natural meadow grassland, paddy field, upland field, and poplar plantation, through the high-throughput Illumina MiSeq sequencing technique. The results indicated that landuse changes primarily affected the soil physical and chemical properties and bacterial community structure. Soil properties, namely, organic matter, pH, total N, total P, available N and P, and microbial biomass C, N, and P, influenced the bacterial community structure. The dominant phyla and genera were almost the same among the land-use types, but their relative abundances were significantly different. The effects of land-use changes on the structure of soil bacterial communities were more quantitative than qualitative.

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“…With the advent of new techniques and reduced sequencing cost, came a greater understanding of the influence of abiotic and biotic factors acting on microbial communities. Temperature [45][46][47][48], UV exposure [49,50], salinity [51,52], humidity [53], pH [54], irradiation [55], pressure [56], pollution [57] and oxygen concentration [58] have all been demonstrated to influence microbiomes.…”

Section: Aridity and Environmental Microbiologymentioning

confidence: 99%

A rather dry subject; investigating the study of arid-associated microbial communities

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Hall

Kronfeld‐Schor

et al. 2020

Environmental Microbiome

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Almost one third of Earth’s land surface is arid, with deserts alone covering more than 46 million square kilometres. Nearly 2.1 billion people inhabit deserts or drylands and these regions are also home to a great diversity of plant and animal species including many that are unique to them. Aridity is a multifaceted environmental stress combining a lack of water with limited food availability and typically extremes of temperature, impacting animal species across the planet from polar cold valleys, to Andean deserts and the Sahara. These harsh environments are also home to diverse microbial communities, demonstrating the ability of bacteria, fungi and archaea to settle and live in some of the toughest locations known. We now understand that these microbial ecosystems i.e. microbiotas, the sum total of microbial life across and within an environment, interact across both the environment, and the macroscopic organisms residing in these arid environments. Although multiple studies have explored these microbial communities in different arid environments, few studies have examined the microbiota of animals which are themselves arid-adapted. Here we aim to review the interactions between arid environments and the microbial communities which inhabit them, covering hot and cold deserts, the challenges these environments pose and some issues arising from limitations in the field. We also consider the work carried out on arid-adapted animal microbiotas, to investigate if any shared patterns or trends exist, whether between organisms or between the animals and the wider arid environment microbial communities. We determine if there are any patterns across studies potentially demonstrating a general impact of aridity on animal-associated microbiomes or benefits from aridity-adapted microbiomes for animals. In the context of increasing desertification and climate change it is important to understand the connections between the three pillars of microbiome, host genome and environment.

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Soil properties, bacterial community composition, and metabolic diversity responses to soil salinization of a semiarid grassland in northeast China

Cited by 30 publications

References 59 publications

Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

A rather dry subject; investigating the study of arid-associated microbial communities

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