Relationship between archaeal community structure and vegetation type in a fen on the Qinghai–Tibetan Plateau

Abstract Background: The Qinghai-Tibetan Plateau represents one of the most important component of the terrestrial ecosystem and a particularly vulnerable region, which harbouring complex and diverse microbiota. The knowledge about their underground microorganisms have largely been studied, but the characteristics of rhizosphere microbiota, particularly archaeal communities remains unclear. Results: High-throughput Illumina sequencing was used to investigate the rhizosphere archaeal communities of two native alpine trees (Picea crassifolia and Populus szechuanica) living on the Qinghai-Tibetan Plateau. The archaeal community structure in rhizospheres significantly differed from that in bulk soil. Thaumarchaeota was the dominant archaeal phylum in all soils tested (92.46-98.01%), while its relative abundance in rhizospheres were significantly higher than that in bulk soil. Ammonium nitrogen, soil organic matter, available phosphorus and pH were significantly correlated with the archaeal community structure, and the deterministic processes dominated the assembly of archaeal communities across all soils. In addition, the network structures of the archaeal community in the rhizosphere were less complex than they were in the bulk soil, and an unclassified archaeal group (Unclassified_k_norank) was identified as the keystone species in all archaeal networks. Conclusions: Overall, the structure, assembly and co-occurrence patterns of archaeal communities are significantly affected by the presence of roots of alpine trees living on the Qinghai-Tibetan Plateau. This study provides new insights into our understanding of archaeal communities in vulnerable ecosystems.

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Response of Archaeal Community Structure to Environmental Changes in Lakes on the Tibetan Plateau, Northwestern China

Geomicrobiology Journal ◽

10.1080/01490450902892662 ◽

2009 ◽

Vol 26 (4) ◽

pp. 289-297 ◽

Cited By ~ 32

Author(s):

Hongchen Jiang ◽

Hailiang Dong ◽

Shicai Deng ◽

Bingsong Yu ◽

Qiuyuan Huang ◽

...

Keyword(s):

Community Structure ◽

Tibetan Plateau ◽

Environmental Changes ◽

Archaeal Community ◽

Northwestern China ◽

The Tibetan Plateau

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Links between archaeal community structure, vegetation type and methanogenic pathway in Alaskan peatlands

FEMS Microbiology Ecology ◽

10.1111/j.1574-6941.2007.00278.x ◽

2007 ◽

Vol 60 (2) ◽

pp. 240-251 ◽

Cited By ~ 82

Author(s):

Juliette N. Rooney-Varga ◽

Michael W. Giewat ◽

Khrystyne N. Duddleston ◽

Jeffrey P. Chanton ◽

Mark E. Hines

Keyword(s):

Community Structure ◽

Vegetation Type ◽

Archaeal Community

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Deciphering the archaeal communities in tree rhizosphere of the Qinghai-Tibetan Plateau

10.21203/rs.3.rs-34088/v3 ◽

2020 ◽

Author(s):

Mengjun Zhang ◽

Liwei Chai ◽

Muke Huang ◽

Weiqian Jia ◽

Jiabao Guo ◽

...

Keyword(s):

Community Structure ◽

Tibetan Plateau ◽

Keystone Species ◽

Terrestrial Ecosystem ◽

Archaeal Community ◽

Ammonium Nitrogen ◽

Bulk Soil ◽

Available Phosphorus ◽

Picea Crassifolia ◽

Archaeal Communities

Abstract Background: The Qinghai-Tibetan Plateau represents one of the most important component of the terrestrial ecosystem and a particularly vulnerable region, which harbouring complex and diverse microbiota. The knowledge about their underground microorganisms have largely been studied, but the characteristics of rhizosphere microbiota, particularly archaeal communities remains unclear.Results: High-throughput Illumina sequencing was used to investigate the rhizosphere archaeal communities of two native alpine trees (Picea crassifolia and Populus szechuanica) living on the Qinghai-Tibetan Plateau. The archaeal community structure in rhizospheres significantly differed from that in bulk soil. Thaumarchaeota was the dominant archaeal phylum in all soils tested (92.46-98.01%), while its relative abundance in rhizospheres were significantly higher than that in bulk soil. Ammonium nitrogen, soil organic matter, available phosphorus and pH were significantly correlated with the archaeal community structure, and the deterministic processes dominated the assembly of archaeal communities across all soils. In addition, the network structures of the archaeal community in the rhizosphere were less complex than they were in the bulk soil, and an unclassified archaeal group (Unclassified_k_norank) was identified as the keystone species in all archaeal networks. Conclusions: Overall, the structure, assembly and co-occurrence patterns of archaeal communities are significantly affected by the presence of roots of alpine trees living on the Qinghai-Tibetan Plateau. This study provides new insights into our understanding of archaeal communities in vulnerable ecosystems.

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Effect of long-term fertilization on archaeal community structure in cal-careous purplish paddy soil

Biodiversity Science ◽

10.3724/sp.j.1003.2011.08193 ◽

2011 ◽

Vol 19 (3) ◽

pp. 369-376

Author(s):

Gu Yunfu ◽

Zhang Xiaoping ◽

Tu Shihua ◽

Lindström Kristina

Keyword(s):

Community Structure ◽

Paddy Soil ◽

Archaeal Community

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Spatial-Temporal Patterns and Controls of Evapotranspiration across the Tibetan Plateau (2000–2012)

Advances in Meteorology ◽

10.1155/2017/7082606 ◽

2017 ◽

Vol 2017 ◽

pp. 1-12 ◽

Cited By ~ 12

Author(s):

Hao Zhang ◽

Jian Sun ◽

Junnan Xiong

Keyword(s):

Tibetan Plateau ◽

Environmental Factors ◽

Vegetation Type ◽

Middle Part ◽

Rate Of Change ◽

Ecological Indicator ◽

The Tibetan Plateau ◽

Grassland Ecosystems ◽

Key Factor ◽

Positive Correlations

Evapotranspiration (ET) is a key factor to further our understanding of climate change processes, especially on the Tibetan Plateau, which is sensitive to global change. Herein, the spatial patterns of ET are examined, and the effects of environmental factors on ET at different scales are explored from the years 2000 to 2012. The results indicated that a steady trend in ET was detected over the past decade. Meanwhile, the spatial distribution shows an increase of ET from the northwest to the southeast, and the rate of change in ET is lower in the middle part of the Tibetan Plateau. Besides, the positive effect of radiation on ET existed mainly in the southwest. Based on the environment gradient transects, the ET had positive correlations with temperature (R>0.85, p<0.0001), precipitation (R > 0.89, p < 0.0001), and NDVI (R > 0.75, p < 0.0001), but a negative correlation between ET and radiation (R = 0.76, p < 0.0001) was observed. We also found that the relationships between environmental factors and ET differed in the different grassland ecosystems, which indicated that vegetation type is one factor that can affect ET. Generally, the results indicate that ET can serve as a valuable ecological indicator.

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Archaeal ammonia oxidizers respond to soil factors at smaller spatial scales than the overall archaeal community does in a high Arctic polar oasis

Canadian Journal of Microbiology ◽

10.1139/cjm-2015-0669 ◽

2016 ◽

Vol 62 (6) ◽

pp. 485-491 ◽

Cited By ~ 3

Author(s):

Samiran Banerjee ◽

Nabla Kennedy ◽

Alan E. Richardson ◽

Keith N. Egger ◽

Steven D. Siciliano

Keyword(s):

Community Structure ◽

Spatial Scales ◽

Archaeal Community ◽

Diversity Indices ◽

High Arctic ◽

Total Carbon ◽

Spatial Dependency ◽

Edaphic Factors ◽

Total Carbon Content ◽

Arctic Soils

Archaea are ubiquitous and highly abundant in Arctic soils. Because of their oligotrophic nature, archaea play an important role in biogeochemical processes in nutrient-limited Arctic soils. With the existing knowledge of high archaeal abundance and functional potential in Arctic soils, this study employed terminal restriction fragment length polymorphism (t-RFLP) profiling and geostatistical analysis to explore spatial dependency and edaphic determinants of the overall archaeal (ARC) and ammonia-oxidizing archaeal (AOA) communities in a high Arctic polar oasis soil. ARC communities were spatially dependent at the 2–5 m scale (P < 0.05), whereas AOA communities were dependent at the ∼1 m scale (P < 0.0001). Soil moisture, pH, and total carbon content were key edaphic factors driving both the ARC and AOA community structure. However, AOA evenness had simultaneous correlations with dissolved organic nitrogen and mineral nitrogen, indicating a possible niche differentiation for AOA in which dry mineral and wet organic soil microsites support different AOA genotypes. Richness, evenness, and diversity indices of both ARC and AOA communities showed high spatial dependency along the landscape and resembled scaling of edaphic factors. The spatial link between archaeal community structure and soil resources found in this study has implications for predictive understanding of archaea-driven processes in polar oases.

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