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Variation of foliar silicon concentrations in temperate forbs : effects of soil silicon, phylogeny and habitat

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005831
URN zum Zitieren der Version auf EPub Bayreuth: urn:nbn:de:bvb:703-epub-5831-2

Titelangaben

Klotz, Marius ; Schaller, Jörg ; Kurze, Susanne ; Engelbrecht, Bettina:
Variation of foliar silicon concentrations in temperate forbs : effects of soil silicon, phylogeny and habitat.
In: Oecologia. Bd. 196 (2021) Heft 4 . - S. 977-987.
ISSN 1432-1939
DOI der Verlagsversion: https://doi.org/10.1007/s00442-021-04978-9

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Abstract

Silicon (Si) accumulation is known to alleviate various biotic and abiotic stressors in plants with potential ecological consequences. However, for dicotyledonous plants our understanding of Si variation remains limited. We conducted a comparative experimental study to investigate (1) interspecific variation of foliar Si concentrations across 37 dicotyledonous forbs of temperate grasslands, (2) intraspecific variation in foliar Si concentration in response to soil Si availability, the influence of (3) phylogenetic relatedness, and (4) habitat association to moisture. Foliar Si differed markedly (approx. 70-fold) across the investigated forbs, with some species exhibiting Si accumulation similar to grasses. Foliar Si increased with soil Si availability, but the response varied across species: species with higher Si accumulation capacity showed a stronger response, indicating that they did not actively upregulate Si uptake under low soil Si availability. Foliar Si showed a pronounced phylogenetic signal, i.e., closely related species exhibited more similar foliar Si concentrations than distantly related species. Significant differences in foliar Si concentration within closely related species pairs nevertheless support that active Si uptake and associated high Si concentrations has evolved multiple times in forbs. Foliar Si was not higher in species associated with drier habitats, implying that in dicotyledonous forbs of temperate grasslands high foliar Si is not an adaptive trait to withstand drought. Our results demonstrated considerable inter- and intraspecific variation in foliar Si concentration in temperate forbs. This variation should have pervasive, but so far understudied, ecological consequences for community composition and functioning of temperate grasslands under land-use and climate change.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Keywords: Temperate grassland; Dicotyledonous plant species; Phylogenetic signal; Drought resistance; Phytoliths
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie
500 Naturwissenschaften und Mathematik > 580 Pflanzen (Botanik)
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Professur Pflanzenökologie > Professur Pflanzenökologie - Univ.-Prof. Dr. Bettina Engelbrecht
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Professur Pflanzenökologie
Forschungseinrichtungen
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen
Sprache: Englisch
Titel an der UBT entstanden: Ja
URN: urn:nbn:de:bvb:703-epub-5831-2
Eingestellt am: 08 Okt 2021 10:08
Letzte Änderung: 10 Aug 2023 12:24
URI: https://epub.uni-bayreuth.de/id/eprint/5831

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