Impacts of plant domestication on soil microbial and nematode communities during litter decomposition
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2023
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Springer
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Purpose Plant domestication altered leaf litter
quality. Since litter traits relate to soil functions and
organisms (i.e., litter decomposition and soil decomposer communities), in this study we explore if
domestication-induced changes in litter quality have
afected their decomposability, and bacterial, fungal,
and nematode communities in the soil.
Methods We collected leaf litter from herbaceous
crops and their wild progenitors, and measured litter
chemical and physical traits. Then, we performed a
litter decomposition assay on a common soil. After
three months of litter incubation, we measured mass
loss, nematode richness and community composition in ten crops. We also measured soil bacterial and fungal richness and community composition in six
crops.
Results Domesticated litters had less carbon (C)
and leaf dry matter content (LDMC), which accelerated decomposition in comparison to wild litters.
Fungal richness was higher in microcosms incubated
with domesticated litters, while the efects of domestication on bacterial richness difered among crops.
Domestication did not afect nematode richness. The
efects of domestication on bacterial and fungal community compositions difered among crops. Soils
with domesticated litters tended to have nematode
communities with a higher abundance of bacterial
feeding nematodes, in comparison to soils fed with
wild litters.
Conclusion Domestication altered decomposition at
diferent levels. Leaf litter decomposability increased
with domestication, which might alter resource inputs
into the soil. Feeding soils with domesticated litters had
idiosyncratic efects on soil microbes, but consistent efects on soil nematodes. Overall, domestication altered
the linkages between crop residues and soil communities diferently for bacteria, fungi, and nematodes.
Descripción
Acknowledgements
We thank Nieves Martín Robles and Rocío Vigo for assistance with data gathering and lab work. We also thank all seed providers. This work was supported by MINECO (grants CGL2014-56567-R, CGL2017-83855-R, BES-2012-054356, PCIN-2014-053, PID2020-113021RA-I00), the European Union (Eco-serve project, 2013–2014 BiodivERsA/FACCE-JPI, with the national funders ANR, NWO, FCT, MINECO, FORMAS, and SNSF) and MICROAGRO (Fundación BBVA, Spain). JP was supported by Ministerio de Ciencia e Innovación (FPI fellowship PRE2018-085280), PGP was supported by Ministerio de Ciencia e Innovación (grant PID2020-113021RA-I00). We thank two anonymous reviewers for their comments, which made our work clearer and more complete.
Funding
Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.
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Citación
Palomino, J., García-Palacios, P., De Deyn, G.B. et al. Impacts of plant domestication on soil microbial and nematode communities during litter decomposition. Plant Soil 487, 419–436 (2023). https://doi.org/10.1007/s11104-023-05937-4
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