Diversity patterns and drivers of soil bacterial and fungal communities along elevational gradients in the Southern Himalayas, China

Yang, Nan; Li, Xiuxiu; Liu, Dong; Zhang, Yan; Chen, Yuheng; Wang, Bo; Hua, Jiani; Zhang, Jiangbao; Peng, Sili; Ge, Zhiwei; Li, Jingji; Ruan, Honghua; Mao, Lingfeng

doi:10.1016/j.apsoil.2022.104563

Cited by 22 publications

(21 citation statements)

References 88 publications

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“…In addition, P. parvifolia increased the soil C/N ratio, which is conducive to nutrient fixation by root zone soil microorganisms. This study found that the soil nutrient content and pH were negatively correlated with altitude (Table S1, p < .01), which is consistent with the findings of Yang, Li, et al (2022). The correlation analysis results showed that nutrient content was significantly negatively correlated with precipitation and positively correlated with temperature (Figure 5).…”

Section: Discussionsupporting

confidence: 91%

Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

Cheng,

Song,

et al. 2023

Ecology and Evolution

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The Qilian Mountains (QLMs) form an important ecological security barrier in western China and a priority area for biodiversity conservation. Potentilla parvifolia is a widespread species in the mid‐high altitudes of the QLMs and has continuously migrated to higher altitudes in recent years. Understanding the effects of P. parvifolia on microbial community characteristics is important for exploring future changes in soil biogeochemical processes in the QLMs. This study found that P. parvifolia has profound effects on the community structure and ecological functions of soil microorganisms. The stability and complexity of the root zone microbial co‐occurrence network were significantly higher than those of bare soils. There was a distinct altitudinal gradient in the effect of P. parvifolia on soil microbial community characteristics. At an elevation of 3204 m, P. parvifolia promoted the accumulation of carbon, nitrogen, and phosphorus and increased sucrase activity and soil C/N while significantly improving the community richness index of fungi (p < .05) compared with that of bacteria and the relative abundance of Ascomycota. The alpha diversity of fungi in the root zone soil of P. parvifolia was also significantly increased at 3550 m altitude. Furthermore, the community similarity distance matrix of fungi showed an evident separation at 3204 m. However, at an altitude of 3750 m, P. parvifolia mainly affected the bacterial community. Potentilla parvifolia increased the bacterial community richness. This is in agreement with the findings based on the functional prediction that P. parvifolia favors the growth and enrichment of denitrifying communities at 3550 and 3750 m. The results provide a scientific basis for predicting the evolutionary trends of the effects of P. parvifolia on soil microbial communities and functions and have important implications for ecological governance in the QLMs.

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Section: Discussionsupporting

confidence: 91%

Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

Cheng,

Song,

et al. 2023

Ecology and Evolution

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“…Vishniacozyma (also known as Cryptococcus) has been isolated from soil and wheat, but there are limited reports regarding this genus in silage. It is reported that Vishniacozyma could assimilate lactic acid and D-lactose (Tian et al, 2022;Li X. et al, 2022). Vishniacozyma was observed in both fresh and ensiled oat in the study, indicating the fresh oat might be subjected to soil contamination before ensiling.…”

Section: The Altitudinal Distribution Of Microbial Community In Fresh...mentioning

confidence: 75%

“…The elevational patterns for plant and animal diversity generally follow a certain pattern, however, microbes do not follow similar and clear elevational diversity patterns with plants and animals ( Fierer et al, 2011 ). The inconsistency of phyllosphere microbial diversity patterns across elevations could be attributed to changing environmental factors induced by elevational variables ( Yang N. et al, 2022 ). Yang X. et al (2022) found that the phyllosphere bacterial and fungal richness showed a unimodal distribution, phyllosphere fungal diversity decreased while the phyllosphere bacterial diversity increased along the elevational gradient.…”

Section: Discussionmentioning

confidence: 99%

The microbial communities and natural fermentation quality of ensiling oat (Avena sativa L.) harvest from different elevations on the Qinghai-Tibet Plateau

Bao

Yangzong²,

Yuan³

et al. 2023

Front. Microbiol.

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IntroductionEnsiling whole-crop oat (Avena sativa L.) has attracted a growing interest in the Qinghai-Tibet Plateau. The study aimed to investigate the microbial community and chemical composition of fresh and ensiling oat harvested from six different elevations of the Qinghai-Tibet Plateau.MethodThe oat (A. sativa L. cv. Qingyin No. 1) was planted in six different sites across Qinghai-Tibet Plateau (BM, Bomi County; BY, Bayi County; DZ, Dazi County; BR, Biru County; SC, Suo County; SN, Seni County), where the elevations were in the range of 2,800–4,500 m above sea level (a. s. l.). Oat was harvested at the milk stage and ensiled for 90 days.ResultsThe highest crude protein (CP) and lowest water-soluble carbohydrate (WSC) were observed in fresh oat of SN and BM, respectively, however, no distinct gradient trend in WSC and CP concentrations along the elevation gradient. The lowest LAB counts in fresh oat from the highest elevational regions of SN. After 90 days of ensiling, the pH in all oat silages was lower than 4.2, and silages from SC and SN showed a lower pH and butyric acid concentration, and higher lactic acid (LA) concentration than silages of other regions. The oat silage from BR showed the lowest LA concentration and the highest pH. The bimodal distributions of fungal and bacterial richness in fresh oat along the elevation gradient were observed, while the elevation gradients did not affect the fungal Shannon index in fresh oat. Dioszegia, Cladosporium, and Vishniacozyma were the prevalent fungal genus in fresh oat, while Wickerhamomyces, Candida, and Saccharomyces dominated the fungal communities of silages. Wickerhamomyces and Candida were the dominant genera in oat silages from BM and SC, respectively. Erwinia, Paenibacillus, Pseudomonas, Leuconostoc, and Exiguobacterium dominated the bacterial community of fresh oat, while Lactobacillus and Kosakonia were the dominant bacterial genus in oat silages. Pantoea was the most dominant bacterial genus in fresh oat from low-elevational regions (BM, BY, and DZ). Oat from SN exhibited the best fermentation quality although fresh oat of SN hosted the lowest LAB counts, indicating that high-efficient LAB might be present in fresh oat sampled from high altitudes.

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“…Recent advances in molecular biology and bioinformatics have enabled the classification of soil microorganisms (i.e., bacteria and fungi) and microfauna (i.e., nematodes) in different environments, thereby improving the empirical understanding of soil microbial and nematode diversity (SMND) responses along elevational gradients [8][9][10][11]. Moreover, as the significance of soil biodiversity in regulating carbon and nutrient dynamics and supporting the ecosystem functions and services has been recognized [11][12][13], the EDP at this micro-scale has been extensively unveiled [8,10,14,15]. Within this framework, researchers have documented the inconsistent patterns of SMND, such as, the monotonic decline, hump-shape, and random patterns [2,6,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The patterns of SMND are likely regulated directly and indirectly by plant resource inputs and environmental factors across the elevational gradient. The diversification of resources, such as litter or root exudates, facilitated by greater plant diversity, increases SMND through the promotion of mutualisms [11,16]. Recently, soil microorganisms and nematodes have been observed to respond to plant trait identity, specifically the trait effect of the dominant species, rather than plant diversity, by influencing the quality and specific conditions of the resources used and preferred [16,17].…”

Section: Introductionmentioning

confidence: 99%

Diversity Patterns and Determinants of Soil Microorganisms and Nematodes along Elevation Gradients in a Temperate Forest in South Korea

Lee,

Dong,

Lee

et al. 2023

Forests

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The elevational patterns of soil microbial and nematodes diversity (SMND) and the determinants remain controversial. Moreover, how the SMND are modified simultaneously with an elevational gradient has not yet been established. In this study, we investigated the elevational patterns of the SMND and the relative importance among/within tree factors (i.e., tree diversity, identity, and quantity) and environmental factors (i.e., climate and soil) on the SMND. For this purpose, we analyzed datasets from 27 plots across nine elevation bands in the temperate forests of Mt. Gariwang, South Korea. We performed multimodel inference tests and subsequently conducted a variance partitioning to determine the most prominent factors controlling each SMND and compare the relative contribution of the trees and environmental effects. Our results revealed that bacterial and fungal diversity decreased along the elevation gradient. However, nematode diversity did not change significantly, indicating that site-specific environmental conditions may be more influential than the elevation per se. Moreover, this indicates that bacterial diversity was affected by the pH and functional dispersion of the leaf size, and that fungal diversity was governed only by the pH. However, nematode diversity was driven by aboveground biomass, ammonium-nitrogen, and tree size diversity. In summary, the soil microbial diversity was more strongly controlled by the environmental factors, whereas the tree factors were more important for nematodes. Our results show that the elevational patterns and determinants of SMND differed among the taxonomic groups in the common micro-food web. These findings provide new insights into the factors controlling the SMND in a temperate forest and expand the local knowledge of soil biodiversity which is necessary for promoting its mainstreaming. Thus, our results contribute to establishing a basis for more targeted and effective biodiversity conservation and management practices in forest ecosystems.

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Diversity patterns and drivers of soil bacterial and fungal communities along elevational gradients in the Southern Himalayas, China

Cited by 22 publications

References 88 publications

Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

The microbial communities and natural fermentation quality of ensiling oat (Avena sativa L.) harvest from different elevations on the Qinghai-Tibet Plateau

Diversity Patterns and Determinants of Soil Microorganisms and Nematodes along Elevation Gradients in a Temperate Forest in South Korea

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