Revealing the gut bacteriome of Dendroctonus bark beetles (Curculionidae: Scolytinae): diversity, core members and co-evolutionary patterns.
Revealing the gut bacteriome of Dendroctonus bark beetles (Curculionidae: Scolytinae): diversity, core members and co-evolutionary patterns.
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DOI：
10.1038/s41598-017-14031-6
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发表时间：
2017-10-24
影响因子：
4.6
通讯作者：
Zúñiga G
中科院分区：
文献类型：
--
作者：
Hernández-García JA;Briones-Roblero CI;Rivera-Orduña FN;Zúñiga G
树蠹属（Dendroctonus bark beetles）包括20个分类学上公认的物种，是北美和中美洲以及欧亚大陆最具破坏性的松树林害虫之一。本研究的目的是表征肠道细菌多样性，确定核心细菌组，并探讨这些细菌和小蠹之间的生态关联。在13种大小蠹的肠道中共鉴定出5个细菌门，其中变形菌门（Proteobacteria）最丰富，其次为厚壁菌门（Firmicutes）、梭菌门（Fusobacteria）、放线菌门（Actinobacteria）和异常球菌-栖热菌门（Deinococcus-Thermus）。如先前的研究所示，α多样性较低，并且观察到β多样性的显著差异。核心细菌组由肠杆菌属、泛菌属、假单胞菌属、拉恩氏菌属、拉乌尔氏菌属和沙雷氏菌属组成。细菌和小蠹之间的缠结图表明，细菌群落的成员是从环境中获得的，可能是从宿主树木。这些发现丰富了对小蠹体内细菌群落组成的认识，为研究小蠹体内细菌的代谢功能及其与小蠹的相互作用提供了基础。
Dendroctonus bark beetles comprise 20 taxonomically recognized species, which are one of the most destructive pine forest pests in North and Central America, and Eurasia. The aims of this study were to characterize the gut bacterial diversity, to determine the core bacteriome and to explore the ecological association between these bacteria and bark beetles. A total of five bacterial phyla were identified in the gut of 13 Dendroctonus species; Proteobacteria was the most abundant, followed by Firmicutes, Fusobacteria, Actinobacteria and Deinococcus-Thermus. The α-diversity was low as demonstrated in previous studies and significant differences in β-diversity were observed. The core bacteriome was composed of Enterobacter, Pantoea, Pseudomonas, Rahnella, Raoultella, and Serratia. The tanglegram between bacteria and bark beetles suggests that members of bacterial community are acquired from the environment, possibly from the host tree. These findings improve the knowledge about the bacterial community composition, and provide the bases to study the metabolic functions of these bacteria, as well as their interaction with these bark beetles.
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