Soil pH controls the structure and diversity of bacterial communities along elevational gradients on Huangshan, China

IF 3.7 2区 农林科学 Q1 ECOLOGY
Jian Xiang , Jie Gu , Genmei Wang , Roland Bol , Lan Yao , Yanming Fang , Huanchao Zhang
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Abstract

Acquiring knowledge of the patterns of soil microbial diversity along elevational gradients and the driving factors of these patterns is important for understanding the dynamics of global nutrient elements. In this study, we analyzed the soil bacterial community composition and diversity using Illumina high-throughput sequencing along an elevational gradient from 670 to 1780 m on Huangshan including 6 vegetation types from base to summit. We found that the dominant phyla were Proteobacteria, Acidobacteria, Actinobacteria and Chloroflexi, accounting for more than 75 % of the sequences. We observed significant variation in soil bacterial community composition across different elevations (ANOSIM P = 0.001). In addition, the soil bacterial diversity increased with increasing elevation from 875 m to 1165 m and decreased with increasing elevation from 1280 m to 1370 m, showing a humpbacked relationship with elevations. Soil pH had the strongest effect on bacterial community composition. In conclusion, soil properties, especially soil pH was the primary factor controlling the elevational distribution of soil bacterial communities on Huangshan.

土壤 pH 值控制着中国黄山海拔梯度上细菌群落的结构和多样性
了解沿海拔梯度的土壤微生物多样性模式及其驱动因素对于理解全球营养元素的动态变化非常重要。在本研究中,我们利用Illumina高通量测序技术分析了黄山海拔从670米到1780米梯度上的土壤细菌群落组成和多样性,包括从山脚到山顶的6种植被类型。我们发现,土壤细菌群落的优势菌门是蛋白质细菌、酸性细菌、放线菌和绿僵菌,占序列的 75% 以上。我们观察到不同海拔高度的土壤细菌群落组成存在明显差异(ANOSIM P = 0.001)。此外,从海拔 875 米到 1165 米,土壤细菌多样性随着海拔的升高而增加,而从海拔 1280 米到 1370 米,土壤细菌多样性随着海拔的升高而减少,呈现出与海拔的驼背关系。土壤 pH 值对细菌群落组成的影响最大。总之,土壤特性,尤其是土壤酸碱度是控制黄山土壤细菌群落海拔分布的主要因素。
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来源期刊
European Journal of Soil Biology
European Journal of Soil Biology 环境科学-生态学
CiteScore
6.90
自引率
0.00%
发文量
51
审稿时长
27 days
期刊介绍: The European Journal of Soil Biology covers all aspects of soil biology which deal with microbial and faunal ecology and activity in soils, as well as natural ecosystems or biomes connected to ecological interests: biodiversity, biological conservation, adaptation, impact of global changes on soil biodiversity and ecosystem functioning and effects and fate of pollutants as influenced by soil organisms. Different levels in ecosystem structure are taken into account: individuals, populations, communities and ecosystems themselves. At each level, different disciplinary approaches are welcomed: molecular biology, genetics, ecophysiology, ecology, biogeography and landscape ecology.
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