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Title (Primary) Temporal changes and alternating host tree root and shoot growth affect soil microbiomes
Author Habiyaremye, J.d.D.; Herrmann, S.; Buscot, F.; Goldmann, K.;
Journal Proceedings
Year 2020
Department BOOEK; iDiv;
Volume 66
Issue 1
Language englisch;
POF III (all) T11;
Keywords tree endogenous rhythmic growth; microbial community structure; bacteria; fungi; timeinduced changes; tree root zone; Quercus robur L.
Abstract Patterns of trees’ endogenous rhythmic growth (ERG) and paralleled C allocation shift
between root and shoot systems have been studied, but there is still a need to understand their
impact in shaping soil microbiomes. Moreover, the impact of plants on soil microbial communities
can be modulated or overweighed by time-induced plant and/or seasonal changes. Thus, we
intended to analyze the structure of soil microbiomes as response to simultaneous alternated host
tree root and shoot flushes and time-induced changes within one vegetation period at two sites in
Central Germany. In this study, we utilized oak phytometers (Quercus robur L., clone DF159) as host
trees, and made use of their ERG, whereby consecutive root and shoot flushes make a complete
growth cycle. We studied two complete growth cycles during the same vegetation period,
performed a non-destructive soil sampling and applied high-throughput amplicon sequencing of
the bacterial 16S gene and the fungal ITS2 region. As C allocation shifts between the tree root and
shoot, released root exudates and consequently the nutrient availability alternate for soil
microorganisms. We therefore anticipated different microbial communities in the host tree root zone
along the growth cycles until autumnal leaf senescence. In our results, the bacterial community
exhibited a directional change over time along the vegetation period. In contrast, the fungal
community appeared sample specific. Our findings enlarge the current understanding of the
temporal microbial assembly in the host tree root zone.
ID 24092
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24092
Habiyaremye, J.d.D., Herrmann, S., Buscot, F., Goldmann, K. (2020):
Temporal changes and alternating host tree root and shoot growth affect soil microbiomes
Proceedings 66 (1), art. 35