Structural Variability and Functional Prediction in the Epiphytic Bacteria Assemblies of Myriophyllum spicatum
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Structural Variability and Functional Prediction in the Epiphytic Bacteria Assemblies of Myriophyllum spicatum Ling Xian1,3 · Tao Wan2,4 · Yu Cao1 · Junyao Sun1 · Ting Wu1 · Andrew Apudo Apudo2 · Wei Li1 · Fan Liu1,2,5 Received: 11 February 2020 / Accepted: 21 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The underlying principles influencing bacteria community assembly have long been of interest in the field of microbial ecology. Environmental heterogeneity is believed to be important in controlling the uniqueness and variability of communities. However, little is known about the influence of the host macrophytes on epiphytic bacteria assembly. In this study, we used two contrasting artificial water environments (eutrophic and oligotrophic) for reciprocal transplant experiment of Myriophyllum spicatum to examine the colonization of epiphytic bacteria accompanied with plants growth. Comparative analysis addressed a higher species diversity in epiphytic bacteria than in bacterioplankton, and the highest microbiome richness in sediment. Our data revealed that the organization of epiphytic bacterial community was affected by both plant status (i.e. branch number, net photosynthesis rate etc.) and water bodies (i.e. total phosphate, total nitrogen, pH etc.). Moreover, plant status effected the assembly in priority to water. 16S rRNA gene sequencing further indicated that the epiphytic assemblies were motivated by functionalization and interplay with hosts as a whole. The results complemented new evidences for the ‘lottery process’ in the epiphytic bacteria assembly traits and shed insights into the assembly patterns referring to functional adaptation across epiphytic bacteria and macrophytes.
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00284-020-02139-4) contains supplementary material, which is available to authorized users. Co-first author:Tao Wan. * Fan Liu [email protected] Tao Wan [email protected] 1
Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, Hubei, People’s Republic of China
2
Sino-Africa Joint Research Centre, Chinese Academy of Sciences, Wuhan 430074, Hubei, People’s Republic of China
3
University of the Chinese Academy of Sciences, Beijing 100049, Beijing, People’s Republic of China
4
Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Science, Shenzhen 518004, People’s Republic of China
5
College of Science, Tibet University, Lhasa 850000, People’s Republic of China
The relationship between bacterial composition, environment and the underlying principles of bacterial community assembly have triggered great debates in the field of microbial ecology for decades [1–4]. Two main processes have been classified as the determinants on bacterial community structures: one is the ‘niche process’ that emphasizes the importance of biotic/abiotic f
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