Archaeal Community Changes Associated with Cultivation of Amazon Forest Soil with Oil Palm

IF 2.3 4区 生物学 Q3 MICROBIOLOGY
D. D. Tupinambá, M. Cantão, O. Y. Costa, J. Bergmann, R. Kruger, C. Kyaw, C. Barreto, B. Quirino
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引用次数: 11

Abstract

This study compared soil archaeal communities of the Amazon forest with that of an adjacent area under oil palm cultivation by 16S ribosomal RNA gene pyrosequencing. Species richness and diversity were greater in native forest soil than in the oil palm-cultivated area, and 130 OTUs (13.7%) were shared between these areas. Among the classified sequences, Thaumarchaeota were predominant in the native forest, whereas Euryarchaeota were predominant in the oil palm-cultivated area. Archaeal species diversity was 1.7 times higher in the native forest soil, according to the Simpson diversity index, and the Chao1 index showed that richness was five times higher in the native forest soil. A phylogenetic tree of unclassified Thaumarchaeota sequences showed that most of the OTUs belong to Miscellaneous Crenarchaeotic Group. Several archaeal genera involved in nutrient cycling (e.g., methanogens and ammonia oxidizers) were identified in both areas, but significant differences were found in the relative abundances of Candidatus Nitrososphaera and unclassified Soil Crenarchaeotic Group (prevalent in the native forest) and Candidatus Nitrosotalea and unclassified Terrestrial Group (prevalent in the oil palm-cultivated area). More studies are needed to culture some of these Archaea in the laboratory so that their metabolism and physiology can be studied.
油棕种植与亚马逊森林土壤古细菌群落变化
本研究采用16S核糖体RNA基因焦氧测序方法,比较了亚马逊森林土壤古菌群落与邻近油棕种植地区土壤古菌群落。原生林土壤物种丰富度和多样性均高于油棕种植区,共有130个OTUs(13.7%)。在分类序列中,原生林以Thaumarchaeota为主,油棕种植区以Euryarchaeota为主。Simpson多样性指数显示,原始森林土壤古细菌物种多样性是原始森林土壤的1.7倍,Chao1指数显示原始森林土壤的丰富度是原始森林土壤的5倍。未分类的Thaumarchaeota序列的系统发育树显示,大部分otu属于杂绿古菌群(Miscellaneous crenarchaeoc Group)。在这两个地区都发现了一些参与养分循环的古菌属(如产甲烷菌和氨氧化剂),但在原生森林中普遍存在的亚硝化假丝酵母(Candidatus Nitrososphaera)和未分类的土壤绿古菌群(Candidatus Nitrosotalea)和未分类的陆生菌群(oil - palm种植区普遍存在)的相对丰度上存在显著差异。需要更多的研究在实验室培养这些古菌,以便研究它们的代谢和生理。
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来源期刊
CiteScore
7.50
自引率
0.00%
发文量
1
审稿时长
>12 weeks
期刊介绍: Archaea is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles dealing with all aspects of archaea, including environmental adaptation, enzymology, genetics and genomics, metabolism, molecular biology, molecular ecology, phylogeny, and ultrastructure. Bioinformatics studies and biotechnological implications of archaea will be considered. Published since 2002, Archaea provides a unique venue for exchanging information about these extraordinary prokaryotes.
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