张马啸, 毛梦圆, 陈宇龙, 等. 闽江河口湿地土壤细菌群落结构与多样性特征[J]. 西南林业大学学报(自然科学), 2024, 44(6): 1–8 . DOI: 10.11929/j.swfu.202311015
引用本文: 张马啸, 毛梦圆, 陈宇龙, 等. 闽江河口湿地土壤细菌群落结构与多样性特征[J]. 西南林业大学学报(自然科学), 2024, 44(6): 1–8 . DOI: 10.11929/j.swfu.202311015
Zhang Maxiao, Mao Mengyuan, Chen Yulong, Yuan Zongsheng, Li Shubin, Pan Hui, Zhou Lili. Soil Bacterial Community Structure and Diversity Characteristics in Minjiang Estuary Wetland[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202311015
Citation: Zhang Maxiao, Mao Mengyuan, Chen Yulong, Yuan Zongsheng, Li Shubin, Pan Hui, Zhou Lili. Soil Bacterial Community Structure and Diversity Characteristics in Minjiang Estuary Wetland[J]. Journal of Southwest Forestry University. DOI: 10.11929/j.swfu.202311015

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闽江河口湿地土壤细菌群落结构与多样性特征

Soil Bacterial Community Structure and Diversity Characteristics in Minjiang Estuary Wetland

  • 摘要: 以闽江河口典型植被类型(秋茄、芦苇、短叶茳芏)为研究对象,光滩为对照,利用16S rRNA高通量测序技术,探讨不同植被类型湿地土壤表层细菌的多样性特征。结果表明:土壤样品中获得的6410个OTUs,分属97门、191纲、359目、468科、582属和170种。在门水平上,优势菌门为Proteobacteria、Bacteroidota、Cyanobacteria、Firmicutes等,其中光滩土壤的主导菌门为Cyanobacteria,秋茄群落为Bacteroidota,芦苇群落和短叶茳芏群落为Proteobacteria;在纲水平上,Cyanobacteriia和Bacilli的相对丰度比例均为光滩 > 秋茄 > 芦苇 > 短叶茳芏;在目水平上,秋茄和芦苇群落中占主导地位的目均为Flavobacteriales;在科水平上,Flavobacteriaceae同为秋茄、芦苇和短叶茳芏土壤中的优势菌科,其相对丰度比例分别为29.60%、18.02%和6.17%;在属水平上,Flavobacterium均为3种有植被覆盖土壤中的主要优势菌属;在种水平上,Jeotgalibacillus malaysiensis为光滩中的特有菌种。不同植被群落的Observed species、Shannon指数、Simpson指数均表现为短叶茳芏 > 芦苇 > 秋茄 > 光滩,光滩与3种植被群落的土壤差异显著。闽江河口湿地细菌群落结构与多样性会根据有无植被覆盖及不同类型植被覆盖而表现出特定的环境偏好。

     

    Abstract: In this study, the typical vegetation types(Kandelia candel, Phragmites australis, Cyperus malaccensis) in the Minjiang Estuary were used as the research objects, and the bare flat was used as the control. The 16S rRNA high-throughput sequencing technology was used to explore the diversity of bacteria in the surface soil of different vegetation types. The results showed that 6410 OTUs were obtained from soil samples, belonging to 97 phylas, 191 classes, 359 orders, 468 families, 582 generas and 170 species. At the phylum level, the dominant bacteria were Proteobacteria, Bacteroidota, Cyanobacteria, Firmicutes and so on. The dominant bacteria in the mudflat soil were Cyanobacteria, the K. candel community was Bacteroidota, and the P. australis community and C. malaccensis community were Proteobacteria. At the class level, the relative abundance ratios of Cyanobacteriia and Bacilli were mudflat > K. candel > P. australis > C. malaccensis. At the order level, the dominant order in K. candel and P. australis communities was Flavobacteriales. At the family level, Flavobacteriaceae was the dominant family in the soil of K. candel, P. australis and C. malaccensis, with the relative abundance ratios of 29.60%, 18.02% and 6.17%, respectively. At the genus level, Flavobacterium was the main dominant genus in the three vegetation-covered soils. At the species level, Jeotgalibacillus malaysiensis is a unique species in mudflat. The Observed species, Shannon index and Simpson index of different vegetation communities showed C. malaccensis > P. australis > K. candel > mudflat, and the soil of mudflat was significantly different from that of the three vegetation communities(P < 0.05). The bacterial community and diversity of the Minjiang Estuary wetland show specific environmental preferences based on the presence or absence of vegetation coverage and different types of vegetation coverage.

     

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