Competitive interactions shape plant responses to nitrogen fertilization and drought: evidence from a microcosm experiment with Lilium bulbiferum L. and Secale cereale L.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Competitive interactions shape plant responses to nitrogen fertilization and drought : evidence from a microcosm experiment with Lilium bulbiferum L. and Secale cereale L. / Lütke Schwienhorst, Julia; Pyrlik, Corinna; Tomberge, Anna et al.

in: Plant Ecology, Jahrgang 223, Nr. 4, 01.04.2022, S. 437-451.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Lütke Schwienhorst J, Pyrlik C, Tomberge A, Fichtner A, Walmsley D, von Oheimb G et al. Competitive interactions shape plant responses to nitrogen fertilization and drought: evidence from a microcosm experiment with Lilium bulbiferum L. and Secale cereale L. Plant Ecology. 2022 Apr 1;223(4):437-451. Epub 2022 Jan 24. doi: 10.1007/s11258-022-01220-1

Bibtex

@article{f662aca171c147b5a5c576cb0a9d765f,
title = "Competitive interactions shape plant responses to nitrogen fertilization and drought: evidence from a microcosm experiment with Lilium bulbiferum L. and Secale cereale L.",
abstract = "Many recent studies have analysed plant species responses to environmental change, but interactive effects of global change drivers and how they are modulated by biotic interactions are still poorly understood. In a mesocosm experiment, we studied the interactive effects of nitrogen (N) fertilization and drought events on plant growth and how these effects are shaped by competitive interactions, using a segetal plant community typical of the lowlands of central Europe (composed of Lilium bulbiferum (segetal species) and Secale cereale (crop species)). We expected that N fertilization increases the drought sensitivity of Lilium (negative interaction effect), and that these effects are shaped by interspecific competition with Secale. Secale and Lilium showed opposing responses to N fertilization (second year of the experiment): Whilst Secale aboveground and belowground biomass almost doubled with N fertilization, Lilium aboveground and belowground biomass showed no response or decreased, respectively, providing Secale with a competitive advantage. Lilium aboveground tissue dieback (as a proxy for growth vigour) was 22% in N and 35% in drought treatments (control: 6%), but reached 91% when combining these treatments. Increasing Lilium tissue dieback was strongly related to decreasing belowground (root) biomass, caused by both negative direct effects of combined treatments (N fertilization + drought), and negative indirect effects acting via treatment-induced increase in Secale biomass. Our results demonstrate that competitive interactions can shape the effects of global change drivers on plant growth. This knowledge in turn could be important for plant species conservation, particularly in the face of ongoing shifts in environmental conditions.",
keywords = "Ecosystems Research, d13C signature, global change, interspecific competition, root:shoot ratio, Segetal plants, δ13C signature, Global Change, interspecific competition, root:shoot ratio, Segetal plants",
author = "{L{\"u}tke Schwienhorst}, Julia and Corinna Pyrlik and Anna Tomberge and Andreas Fichtner and David Walmsley and {von Oheimb}, Goddert and Werner H{\"a}rdtle",
note = "Funding Information: Open Access funding enabled and organized by Projekt DEAL. This study was funded by the German Federal Environmental Foundation, Osnabr{\"u}ck, Germany (DBU; Grant number: AZ20015/361). Publisher Copyright: {\textcopyright} 2022, The Author(s).",
year = "2022",
month = apr,
day = "1",
doi = "10.1007/s11258-022-01220-1",
language = "English",
volume = "223",
pages = "437--451",
journal = "Plant Ecology",
issn = "1385-0237",
publisher = "Springer Netherlands",
number = "4",

}

RIS

TY - JOUR

T1 - Competitive interactions shape plant responses to nitrogen fertilization and drought

T2 - evidence from a microcosm experiment with Lilium bulbiferum L. and Secale cereale L.

AU - Lütke Schwienhorst, Julia

AU - Pyrlik, Corinna

AU - Tomberge, Anna

AU - Fichtner, Andreas

AU - Walmsley, David

AU - von Oheimb, Goddert

AU - Härdtle, Werner

N1 - Funding Information: Open Access funding enabled and organized by Projekt DEAL. This study was funded by the German Federal Environmental Foundation, Osnabrück, Germany (DBU; Grant number: AZ20015/361). Publisher Copyright: © 2022, The Author(s).

PY - 2022/4/1

Y1 - 2022/4/1

N2 - Many recent studies have analysed plant species responses to environmental change, but interactive effects of global change drivers and how they are modulated by biotic interactions are still poorly understood. In a mesocosm experiment, we studied the interactive effects of nitrogen (N) fertilization and drought events on plant growth and how these effects are shaped by competitive interactions, using a segetal plant community typical of the lowlands of central Europe (composed of Lilium bulbiferum (segetal species) and Secale cereale (crop species)). We expected that N fertilization increases the drought sensitivity of Lilium (negative interaction effect), and that these effects are shaped by interspecific competition with Secale. Secale and Lilium showed opposing responses to N fertilization (second year of the experiment): Whilst Secale aboveground and belowground biomass almost doubled with N fertilization, Lilium aboveground and belowground biomass showed no response or decreased, respectively, providing Secale with a competitive advantage. Lilium aboveground tissue dieback (as a proxy for growth vigour) was 22% in N and 35% in drought treatments (control: 6%), but reached 91% when combining these treatments. Increasing Lilium tissue dieback was strongly related to decreasing belowground (root) biomass, caused by both negative direct effects of combined treatments (N fertilization + drought), and negative indirect effects acting via treatment-induced increase in Secale biomass. Our results demonstrate that competitive interactions can shape the effects of global change drivers on plant growth. This knowledge in turn could be important for plant species conservation, particularly in the face of ongoing shifts in environmental conditions.

AB - Many recent studies have analysed plant species responses to environmental change, but interactive effects of global change drivers and how they are modulated by biotic interactions are still poorly understood. In a mesocosm experiment, we studied the interactive effects of nitrogen (N) fertilization and drought events on plant growth and how these effects are shaped by competitive interactions, using a segetal plant community typical of the lowlands of central Europe (composed of Lilium bulbiferum (segetal species) and Secale cereale (crop species)). We expected that N fertilization increases the drought sensitivity of Lilium (negative interaction effect), and that these effects are shaped by interspecific competition with Secale. Secale and Lilium showed opposing responses to N fertilization (second year of the experiment): Whilst Secale aboveground and belowground biomass almost doubled with N fertilization, Lilium aboveground and belowground biomass showed no response or decreased, respectively, providing Secale with a competitive advantage. Lilium aboveground tissue dieback (as a proxy for growth vigour) was 22% in N and 35% in drought treatments (control: 6%), but reached 91% when combining these treatments. Increasing Lilium tissue dieback was strongly related to decreasing belowground (root) biomass, caused by both negative direct effects of combined treatments (N fertilization + drought), and negative indirect effects acting via treatment-induced increase in Secale biomass. Our results demonstrate that competitive interactions can shape the effects of global change drivers on plant growth. This knowledge in turn could be important for plant species conservation, particularly in the face of ongoing shifts in environmental conditions.

KW - Ecosystems Research

KW - d13C signature

KW - global change

KW - interspecific competition

KW - root:shoot ratio

KW - Segetal plants

KW - δ13C signature

KW - Global Change

KW - interspecific competition

KW - root:shoot ratio

KW - Segetal plants

UR - http://www.scopus.com/inward/record.url?scp=85123498983&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/571e51e9-909f-31e0-8f5f-1b8990f75cca/

U2 - 10.1007/s11258-022-01220-1

DO - 10.1007/s11258-022-01220-1

M3 - Journal articles

VL - 223

SP - 437

EP - 451

JO - Plant Ecology

JF - Plant Ecology

SN - 1385-0237

IS - 4

ER -

DOI