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Title

Crops and their wild progenitors recruit beneficial and detrimental soil biota in opposing ways

AuthorsNieves Martín-Robles1*, Pablo García-Palacios2, Marta Rodríguez1, Daniel Rico1, Rocío 4 Vigo1, Sara Sánchez-Moreno3, Gerlinde B. De Deyn4, Rubén Milla1
KeywordsCrop wild progenitors Domestication Mycorrhizal colonization Nematode infection Plant soil feedbacks Root-associated microorganism
Issue DateSep-2020
PublisherSpringer
CitationPlant and Soil
AbstractIt is widely known that conventional agricultural practices, like tillage or 24 monocropping, promote negative plant soil feedbacks (PSFs). However, the effect 25 of crop domestication on PSF remain less clear. Evolution under cultivation 26 changes crop genotypes, which might alter their interactions with soil organisms, 27 including mutualists and antagonists, and lead to shifts in soil legacies and 28 feedbacks. 29 30  We conducted a two seasons PSF experiment using ten crop species and their wild 31 progenitors. In season one, we grew the wild and domesticated genotypes to train 32 a common soil. In season two, we examined the effects of the soil training on 33 arbuscular mycorrhizal and root-feeding nematodes and plant performance by 34 growing the same genotypes on soils trained in season one. 35 36  Plants showed less mycorrhizal colonization and more nematodes infection in 37 soils trained by domesticated plants. Moreover, domesticated plants were less 38 colonized by mycorrhiza and more by nematodes than their wild progenitor. 39 However, the reaction of plant biomass and PSF indexes to domestication varied 40 among the crops. 41 42  Soil legacies differed between domesticated varieties and their wild progenitors, 43 suggesting an impact of domestication on the recruitment of rhizosphere 44 organisms through an overall negative effect on mycorrhizal mutualism and on 45 plant resistance to herbivores. 46 47
URIhttp://hdl.handle.net/10261/221236
DOIhttps://doi.org/10.1007/s11104-020-04703-0
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