Conditioning the soil microbiome through plant-soil feedbacks suppresses an aboveground insect pest

TY - JOUR

T1 - Conditioning the soil microbiome through plant-soil feedbacks suppresses an aboveground insect pest

AU - Pineda, A.M.

AU - Kaplan, Ian

AU - Hannula, Emilia

AU - Ghanem, Wadih

AU - Bezemer, T.M.

N1 - 6856, TE; Data archiving: data archived in DataverseNL and ENA

PY - 2020

Y1 - 2020

N2 - •Soils and their microbiomes are now recognized as key components of plant health, but how to steer those microbiomes to obtain their beneficial functions is still unknown. Here, we assess whether plant‐soil feedbacks can be applied in a crop system to shape soil microbiomes that suppress herbivorous insects in aboveground tissues.•We used four grass and four forb species to condition living soil. Then we inoculated those soil microbiomes into sterilized soil and grew chrysanthemum as a focal plant. We evaluated the soil microbiome in the inocula and after chrysanthemum growth, as well as plant and herbivore parameters.•We show that inocula and inoculated soil in which a focal plant had grown harbor remarkably different microbiomes, with the focal plant exerting a strong negative effect on fungi, especially arbuscular mycorrhizal fungi. Soil inoculation consistently induced resistance against the thrips Frankliniella occidentalis, but not against the mite Tetranychus urticae, when compared with sterilized soil. Additionally, plant species shaped distinct microbiomes that had different effects on thrips, chlorogenic acid levels in leaves and plant growth.•This study provides a proof‐of‐concept that the plant‐soil feedback concept can be applied to steer soil microbiomes with the goal of inducing resistance aboveground against herbivorous insects.

AB - •Soils and their microbiomes are now recognized as key components of plant health, but how to steer those microbiomes to obtain their beneficial functions is still unknown. Here, we assess whether plant‐soil feedbacks can be applied in a crop system to shape soil microbiomes that suppress herbivorous insects in aboveground tissues.•We used four grass and four forb species to condition living soil. Then we inoculated those soil microbiomes into sterilized soil and grew chrysanthemum as a focal plant. We evaluated the soil microbiome in the inocula and after chrysanthemum growth, as well as plant and herbivore parameters.•We show that inocula and inoculated soil in which a focal plant had grown harbor remarkably different microbiomes, with the focal plant exerting a strong negative effect on fungi, especially arbuscular mycorrhizal fungi. Soil inoculation consistently induced resistance against the thrips Frankliniella occidentalis, but not against the mite Tetranychus urticae, when compared with sterilized soil. Additionally, plant species shaped distinct microbiomes that had different effects on thrips, chlorogenic acid levels in leaves and plant growth.•This study provides a proof‐of‐concept that the plant‐soil feedback concept can be applied to steer soil microbiomes with the goal of inducing resistance aboveground against herbivorous insects.

KW - NIOO

KW - Plan_S-Compliant-TA

UR - https://hdl.handle.net/10411/OIQCZH

UR - https://www.ebi.ac.uk/ena/data/view/PRJEB35722

U2 - 10.1111/nph.16385

DO - 10.1111/nph.16385

M3 - Article

SN - 0028-646X

VL - 226

SP - 595

EP - 608

JO - New Phytologist

JF - New Phytologist

IS - 2

ER -