Recovery of microbial community structure of biological soil crusts in successional stages of Shapotou desert revegetation, northwest China

Liu, Lichao; Liu, Yubing; Rong, Hui; Xie, Ming‐Jin

doi:10.1016/j.soilbio.2016.12.030

Cited by 79 publications

(54 citation statements)

References 23 publications

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“…Cyanobacteria were most abundant in BSCs, where they might contribute to soil stabilization and carbon and nitrogen fixation (Belnap & Gardner, ), whereas Actinobacteria , Chloroflexi and Acidobacteria were most abundant in SBCs. These results are similar to those from the Tengger Desert, where the mean annual precipitation is 180 mm (Liu et al, ), suggesting that bacterial diversity is independent of a precipitation gradient (Bachar et al, ).…”

Section: Discussionsupporting

confidence: 84%

“…However, Gemmatimonadetes were not found in BSCs or SBCs in the Colorado Plateau (Gundlapally & Garcia‐Pichel, ; Steven et al, ). Verrucomicrobia , Armatimonadetes and Planctomyces differ widely among BSCs of various regions, including the Gurbantunggut and the Tengger Deserts (Liu et al, ). This might be because of minor differences in the climates of these regions.…”

Section: Discussionmentioning

confidence: 99%

“…Analysis of the relative abundance of microbial taxa, including bacteria, fungi and archaea, and the taxonomic diversity of microbial communities in BSCs of some desert ecosystems, has been performed with culturing techniques, denaturing gradient gel electrophoresis and DNA sequencing (Bates, Cropsey, Caporaso, Knight, & Fierer, 2011;Liu, Liu, Hui, & Xie, 2017;Nagy, Perez, & Garcia-Pichel, 2005;Steven, Gallegos-Graves, Yeager, Belnap, & Kuske, 2014). These studies showed that some dominant species exist in microbial communities of BSCs across drylands, despite the regional specificity or endemic species of soils and the variation in relative abundance of their dominant species in different types of BSCs.…”

Section: Introductionmentioning

confidence: 99%

“…Microbial community structure has been shown to differ among various types of BSC in desert ecosystems (Liu et al, 2017;Zhang, Kong, Wu, & Zhang, 2016). Microbial biomass (Taylor, Wilson, Mills, & Burns, 2002) and composition (Steven et al, 2013(Steven et al, , 2014 also differ between the surface layer and different soil depths.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Differences in bacterial community structure between three types of biological soil crusts and soil below crusts from the Gurbantunggut Desert, China

Liu

Wang

Zhao

et al. 2019

European J Soil Science

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The scarcity of knowledge on differences in the microbial assemblage between biological soil crusts (BSCs) and soil below crusts (SBCs) limits our understanding of the contribution of different layers of topsoil to desert ecosystems. This study used Illumina MiSeq sequencing to determine whether differences in bacterial communities among different types of BSCs (algae, lichen and moss dominated) are greater than those between BSCs and their corresponding underlying soils (0–5 cm) in the Gurbantunggut Desert, China. Alpha and beta diversity of bacterial communities showed that richness and diversity were greater in SBCs than in BSCs, but the absolute bacterial abundance was larger in BSCs than in soils. Differences were mainly in the phyla Cyanobacteria, Actinobacteria, Chloroflexi and Acidobacteria. Cyanobacteria were concentrated in BSCs, especially in algae‐dominated BSCs. The relative abundances of Actinobacteria, Chloroflexi and Acidobacteria in SBCs were more than twice those in BSCs, and they were also abundant in the lichen‐ and moss‐dominant crusts. The number of sample‐specific genera was larger in BSCs, but there were more shared genera among SBCs. These results, combined with the principal coordinate analysis and the predicted function profiles, showed that differences in microbial community structure and function in desert ecosystems were greatest between BSCs and the underlying soils, followed by differences among the three types of BSCs, and differences were smallest between the soils below different crusts. These differences might be closely related to the soil chemical properties, especially to pH and fertility. Our study indicated that microbial communities tended to converge in SBCs of different microhabitats. Highlights We studied bacterial community composition in different types of BSCs and SBCs. Differences in bacterial community were greatest between BSCs and SBCs. BSC components contributed to small‐scale microbial heterogeneity in SBCs. Surface soil bacterial communities were strongly stratified even at the centimetre scale from BSCs.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Differences in bacterial community structure between three types of biological soil crusts and soil below crusts from the Gurbantunggut Desert, China

Liu

Wang

Zhao

et al. 2019

European J Soil Science

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“…A recent study on crusts in the Tengger Desert, China, showed that bacterial diversity and richness were highest after 15 years, and at least 15 years might be needed for recovery of bacterial abundance of BSCs (Liu et al, 2017). To better understand these questions, we must analyze in detail the bacterial community composition of BSCs at all levels of classification and their corresponding function in the recovery process of BSCs.…”

Section: Introductionmentioning

confidence: 99%

Development of bacterial communities in biological soil crusts along a revegetation chronosequence in the Tengger Desert, northwest China

Liu

Zhang

et al. 2017

Biogeosciences

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Abstract. Knowledge of structure and function of microbial communities in different successional stages of biological soil crusts (BSCs) is still scarce for desert areas. In this study, Illumina MiSeq sequencing was used to assess the compositional changes of bacterial communities in different ages of BSCs in the revegetation of Shapotou in the Tengger Desert. The most dominant phyla of bacterial communities shifted with the changed types of BSCs in the successional stages, from Firmicutes in mobile sand and physical crusts to Actinobacteria and Proteobacteria in BSCs, and the most dominant genera shifted from Bacillus, Enterococcus and Lactococcus to RB41_norank and JG34-KF-361_norank. Alpha diversity and quantitative real-time polymerase chain reaction (PCR) analysis indicated that bacterial richness and abundance reached their highest levels after 15 years of BSC development. Redundancy analysis showed that silt + clay content and total K were the prime determinants of the bacterial communities of BSCs. The results suggested that bacterial communities of BSCs recovered quickly with the improved soil physicochemical properties in the early stages of BSC succession. Changes in the bacterial community structure may be an important indicator in the biogeochemical cycling and nutrient storage in early successional stages of BSCs in desert ecosystems.

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Potential complementary functions among bacteria, fungi, and archaea involved in carbon cycle during reversal of desertification

Wang

Zhang

et al. 2020

Land Degrad Dev

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Development of biological soil crusts (BSCs) on bare land is a sign of reversal of desertification, and microbial communities of BSCs are the biogeochemical engineers of desert ecosystems. However, regulation of different microbial groups involved in the carbon (C) cycle is not clear. This study investigated the correlation between bacteria, fungi, and archaea of BSCs involved in the C cycle during reversal of desertification through community abundance analysis by quantitative PCR and functional gene detection using GeoChip 5.0. Among the known C cycle genes found in BSCs, 84.5% of C degradation genes, 95% of C fixation genes, and all of methane oxidation genes were derived from bacteria owing to their highest proportion among the total microbial abundance of BSCs; some recalcitrant C degradation genes were derived from fungi; and other C fixation pathway and methanogenesis genes originated from archaea. The increased abundance of bacteria and fungi and decreased abundance of archaea during reversal of desertification, as well as the difference in C cycle genes of the three microbial groups, indicated the functional complementarity among these microorganisms involved in C cycle. At the early stage of BSC development, archaea, and bacteria provide available C sources by autotrophic CO2 fixation pathway; bacteria play important roles in C degradation, C fixation, and methane oxidation during the entire BSC development process; and fungi mainly degrade lignin at the later stage of BSC development. Thus, cooperation among BSC microflora altered C cycle during reversal of desertification.

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Recovery of microbial community structure of biological soil crusts in successional stages of Shapotou desert revegetation, northwest China

Cited by 79 publications

References 23 publications

Differences in bacterial community structure between three types of biological soil crusts and soil below crusts from the Gurbantunggut Desert, China

Differences in bacterial community structure between three types of biological soil crusts and soil below crusts from the Gurbantunggut Desert, China

Development of bacterial communities in biological soil crusts along a revegetation chronosequence in the Tengger Desert, northwest China

Potential complementary functions among bacteria, fungi, and archaea involved in carbon cycle during reversal of desertification

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