Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China.
Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Lanzhou, 730000, Gansu Province, China.
Microb Ecol. 2021 Oct;82(3):652-665. doi: 10.1007/s00248-021-01680-4. Epub 2021 Feb 17.
Coastal salinity typically alters the soil microbial communities, which subsequently affect the biogeochemical cycle of nutrients in the soil. The seasonal variation of the soil fungal communities in the coastal area, closely associated with plant population, is poorly understood. This study provides an insight into the fungal community's variations from autumn to winter and spring to summer at a well-populated area of salt-tolerant Tamarix chinensis and beach. The richness and diversity of fungal community were higher in the spring season and lower in the winter season, as showed by high throughput sequencing of the 18S rRNA gene. Ascomycota was the predominant phylum reported in all samples across the region, and higher difference was reported at order level across the seasonal variations. The redundancy analysis suggested that the abundance and diversity of fungal communities in different seasons are mainly correlated to total organic carbon and total nitrogen. Additionally, the saprotrophic and pathotrophic fungi decreased while symbiotic fungi increased in the autumn season. This study provides a pattern of seasonal variation in fungal community composition that further broadens our limited understanding of how the density of the salt-tolerant T. chinensis population of the coastal saline soil could respond to their seasonal variations.
沿海地区的盐分通常会改变土壤微生物群落，进而影响土壤中养分的生物地球化学循环。沿海地区土壤真菌群落与植物种群密切相关，但人们对其季节性变化知之甚少。本研究深入了解了盐分耐受的柽柳和海滩人口稠密地区从秋季到冬季和春季到夏季的真菌群落变化。高通量测序 18S rRNA 基因显示，真菌群落的丰富度和多样性在春季较高，冬季较低。在整个地区的所有样本中，子囊菌门都是主要的门，在季节变化中报告了更高的差异。冗余分析表明，不同季节真菌群落的丰度和多样性主要与总有机碳和总氮相关。此外，在秋季，腐生真菌和病原真菌减少，共生真菌增加。本研究提供了真菌群落组成季节性变化的模式，进一步拓宽了我们对沿海盐渍土中耐盐柽柳种群密度如何对季节性变化做出响应的有限认识。
