基于高通量测序的中国水仙根际土壤微生物群落组成
2021-11-15李媛媛张琼陈小煌张敬虎陆銮眉
李媛媛 张琼 陈小煌 张敬虎 陆銮眉



摘要:【目的】明確中同水仙植株根际土壤微生物群落的组成特征。【方法】采用Illumina Miseq高通量测序技术对水仙根际土壤微生物样品的保守基因区进行测序及生物信息学分析,阐明中同水仙根际土壤的细菌、真菌和^菌群落结构组成,并对水仙根际土壤微生物的优势菌属进行深入分析。【结果】共获得优化序列175840条,基于97%序列相似度,聚类为2 680个OTUs。优势细菌类群是绿弯菌门Chloroflexi( 30.86%)和变形菌门Proteobacteria(20.67%),真菌以子囊菌门Ascomycota(84.94%)为主,属水平上球毛壳菌Chaetomium globosum( 28.15%)和散子囊菌Eurotiales( 25.01%)占较高比例。占菌类群主要为奇^菌门Thaumarchaeota( 51.40%)、深^菌门Bathyarchaeota(25.98%)和广古菌门Euryarchaeota( 20.65%)。其中,来自奇古菌门的SCG类群(25.67%)和嗜酸性氨氧化古菌Candidatus Nitrosotalea( 12.93%)占较高比例。【结论】中国水仙根际土壤微域具有丰富多样的微生物类群,这对于开发和利用水仙根际土壤微生物资源具有重要意义。
关键词:中国水仙;根际土壤微生物;高通量测序;细菌;真菌;^菌
中图分类号:S682
文献标志码:A
文章编号:1008-03 84(2021)08-0948-08
High-throughput Sequencing on Microbial Community in
Rhizosphere Soil of Chinese Narcissus
LI Yuanyuan 1, ZHANG Qiong 1, CHEN Xiaohuang 2, ZHANG Jinghu 1, LU Luanmei 1*
(I.Provincial Key Laboratory of Landscape Plants with Fujian and Taiwan Characteristics/College of the Bioscience and
Technology, Minnan Normal University, Zhangzhou, Fujian 363000. China; 2. College of the Chemistry, Chemical
Engineering and Environment. Minnan Nonral Universily. Zhangzhou, Fujian 363000. China )
Abstract: 【Objective】The microbial community in thizosphere soils ofChinese narcissuses was analyzed.【Method】TheIllumina Miseq high-throughput sequencing technology was used to obtain the relevant conserved gene regions of the microbesin soil specimens from Chinese narcissus planting lots. The community structures and distributions of dominant species ofbacteria, fungi, and archaea in the thizosphere soils were analyzed. 【Resultl】In total. 175 840 optimized sequences wereobtained and clustered from the specimens int0 2 680 representative OTUs with a 97% similarity. The dominant bacteria wereChloroflexi (30.86%) and Proteobacteria (20.67%). Among the fungi, Ascomycota (84.94%) significantly overshadowed theothers. with Chaetomiumm、 globosum (28.15%) and Asconycetes (25.01%) accounted for the greater proportions. On archaea,Thaumarchaeota (51 .40%), Bathyarchaeota (25.98%). and Euryarchaeota (20.65%) were the maj or phyla that had 25.67% SCGand 12.93% acidophilic ammonia oxidizing members. 【Conclusion】The thizosphere soils of Chinese narcissuses harboreddiverse and rich microbial species. The information obtained would aid the development and utilization of the natural resources.
Key words: Chinese narcissuses; thizosphere soil microorganisms; high-throughput sequencing; bacteria; fungi; archaea
0 引言
【研究意义】中国水仙(Narcissus tazetta L.var.chinensis Roem.)是石蒜科多年生草本植物,原产我国,已有一千多年栽培历史,独具天然丽质,芬芳清新,素洁幽雅,是我国十大观赏名花之一,观赏价值极高,在园林造景中也有广泛应用。近年来,很多研究揭示了植物根际一土壤一微生物之间的相互作用机制,探明中国水仙根际土壤微生物群落分布特征对于解析中国水仙的生态生存机制具有重要意义[1-3]。但目前对中国水仙根际土壤微生物群落组成的认知仍然有限,尤其对水仙根际土壤真菌和古菌的群落水平鲜有报道,从而不能深入解析水仙根际土壤微生物與水仙生长发育的关系。……
