Complex cell-to-cell interactions (including the production of antibiotics and the quorum sensing phenomenon) occur between benthic marine organisms and bacteria, leading to the establishment of synergistic interactions, especially in extreme and harsh environments, such as Antarctica. Despite this, current data concerning the composition, host- and site-relatedness, and biotechnological values of the bacterial community associated with Antarctic sponges are limited to few works, resulting in a still fragmented and incomplete knowledge. In this context, a total of 11 sponge species (belonging to Demospongiae and Hexactinellida) from the Terra Nova Bay area (Ross Sea) were explored for the associated bacterial diversity by the ION Torrent sequencing. An additional predictive functional analysis on 16S rRNA gene data was performed to unravel metabolic and biotechnological potentials of the associated bacterial communities. Data obtained highlighted the predominance of Proteobacteria, mainly affiliated to Alpha- and Gammaproteobacteria. Retrieved phyla were similarly distributed across samples, with dissimilarities encountered for the sponge Haliclona (Rhizoniera) dancoi (Topsent, 1901). Functional prediction results suggested that the associated bacterial community may be involved in the biosynthesis of antibiotics, quorum sensing, and degradation of aromatic compounds.

中文翻译：

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探索与南极海绵相关的细菌群落的多样性和代谢特征（特拉诺瓦湾、罗斯海）

底栖海洋生物和细菌之间发生复杂的细胞间相互作用（包括抗生素的产生和群体感应现象），导致协同相互作用的建立，特别是在极端和恶劣的环境中，例如南极洲。尽管如此，有关与南极海绵相关的细菌群落的组成、宿主和地点相关性以及生物技术价值的当前数据仅限于少数工作，导致知识仍然支离破碎和不完整。在此背景下，通过 ION Torrent 测序探索了来自 Terra Nova 湾地区（罗斯海）的 11 种海绵物种（属于 Demospongiae 和 Hexactinellida）的相关细菌多样性。对 16S rRNA 基因数据进行了额外的预测功能分析，以揭示相关细菌群落的代谢和生物技术潜力。获得的数据突出了 Proteobacteria 的优势，主要隶属于 Alpha 和 Gammaproteobacteria。检索到的门在样本中分布相似，但海绵 Haliclona (Rhizoniera) dancoi (Topsent, 1901) 遇到的不同。功能预测结果表明相关细菌群落可能参与抗生素的生物合成、群体感应和芳香族化合物的降解。检索到的门在样本中分布相似，但海绵 Haliclona (Rhizoniera) dancoi (Topsent, 1901) 遇到的不同。功能预测结果表明相关细菌群落可能参与抗生素的生物合成、群体感应和芳香族化合物的降解。检索到的门在样本中分布相似，但海绵 Haliclona (Rhizoniera) dancoi (Topsent, 1901) 遇到的不同。功能预测结果表明相关细菌群落可能参与抗生素的生物合成、群体感应和芳香族化合物的降解。