Abstract
Ferula sinkiangensis (F. sinkiangensis) is a desert short-lived medicinal plant, and its number is rapidly decreasing. Rhizosphere microbial community plays an important role in plant growth and adaptability. However, F. sinkiangensis rhizosphere bacterial communities and the soil physicochemical factors that drive the bacterial community distribution are currently unclear. On this study, based on high-throughput sequencing, we explored the diversity, structure and composition of F. sinkiangensis rhizosphere bacterial communities at different slope positions and soil depths and their correlation with soil physicochemical properties. Our results revealed the heterogeneity and changed trend of F. sinkiangensis rhizosphere bacterial community diversity and abundance on slope position and soil depth and found Actinobacteria (25.5%), Acidobacteria (16.9%), Proteobacteria (16.6%), Gemmatimonadetes (11.5%) and Bacteroidetes (5.8%) were the dominant bacterial phyla in F. sinkiangensis rhizosphere soil. Among all soil physicochemical variables shown in this study, there was a strong positive correlation between phosphorus (AP) and the diversity of rhizosphere bacterial community in F. sinkiangensis. In addition, Soil physicochemical factors jointly explained 24.28% of variation in F. sinkiangensis rhizosphere bacterial community structure. Among them, pH largely explained the variation of F. sinkiangensis rhizosphere bacterial community structure (5.58%), followed by total salt (TS, 5.21%) and phosphorus (TP, 4.90%).
Highlights
Ferula sinkiangensis (F. sinkiangensis) is a desert short-lived medicinal plant, and its number is rapidly decreasing
With the increasing Sequences number, it is rarely accompanied by the increase of the number of new bacteria Operational Taxonomic Units (OTUs), which reflects the reasonable amount of data we sequenced
F. sinkiangensis population continues to decline, the research conducted on F. sinkiangensis is still focused mainly on medicinal properties; in contrast, the research on habitat ecology, plant physiology and soil is rare, restricting the capacity to conserve F. sinkiangensis
Summary
Ferula sinkiangensis (F. sinkiangensis) is a desert short-lived medicinal plant, and its number is rapidly decreasing. On this study, based on high-throughput sequencing, we explored the diversity, structure and composition of F. sinkiangensis rhizosphere bacterial communities at different slope positions and soil depths and their correlation with soil physicochemical properties. Soil physicochemical factors jointly explained 24.28% of variation in F. sinkiangensis rhizosphere bacterial community structure. Our knowledge no scholars have studied the rhizosphere microorganisms of F. sinkiangensis, the distribution and structural composition of the rhizosphere soil microbial community of F. sinkiangensis are unclear. Whether the difference caused by slope position will affect the community structure and diversity of bacteria in the rhizosphere soil of F. sinkiangensis is not clear, nor has it been reported by other scholars. In this study, we investigated the structure composition and diversity of rhizosphere microorganisms in F. sinkiangensis under different slope positions and soil depths. The purpose is to explore which of these soil physical and chemical factors are significantly related to soil microorganisms in F. sinkiangensis rhizosphere
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