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Impacts of domestication on the arbuscular mycorrhizal symbiosis of 27 crop species

Martín-Robles, Nieves ; Lehmann, Anika ; Seco, Erica ; Aroca, Ricardo ; Rillig, Matthias C ; Milla, Rubén

The New phytologist, 2018-04, Vol.218 (1), p.322-334 [Peer Reviewed Journal]

England: New Phytologist Trust

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Title:
Impacts of domestication on the arbuscular mycorrhizal symbiosis of 27 crop species
Author: Martín-Robles, Nieves ; Lehmann, Anika ; Seco, Erica ; Aroca, Ricardo ; Rillig, Matthias C ; Milla, Rubén
Subjects: Agricultural practices ; Agriculture ; arbuscular mycorrhiza (AM) ; Arbuscular mycorrhizas ; Availability ; Biological fertilization ; Colonization ; crop evolution ; Crops ; Domestication ; Evolution ; Fertilization ; Fungi ; mycorrhizal growth response ; Nutrition ; Phosphorus ; phosphorus (P) fertilization ; Phylogeny ; Plant nutrition ; Soil ; Soil microorganisms ; Species ; Sustainability ; Sustainable agriculture ; Symbiosis ; wild progenitors
Is Part Of: The New phytologist, 2018-04, Vol.218 (1), p.322-334
Notes: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Description: The arbuscular mycorrhizal (AM) symbiosis is key to plant nutrition, and hence is potentially key in sustainable agriculture. Fertilization and other agricultural practices reduce soil AM fungi and root colonization. Such conditions might promote the evolution of low mycorrhizal responsive crops. Therefore, we ask if and how evolution under domestication has altered AM symbioses of crops. We measured the effect of domestication on mycorrhizal responsiveness across 27 crop species and their wild progenitors. Additionally, in a subset of 14 crops, we tested if domestication effects differed under contrasting phosphorus (P) availabilities. The response of AM symbiosis to domestication varied with P availability. On average, wild progenitors benefited from the AM symbiosis irrespective of P availability, while domesticated crops only profited under P-limited conditions. Magnitudes and directions of response were diverse among the 27 crops, and were unrelated to phylogenetic affinities or to the coordinated evolution with fine root traits. Our results indicate disruptions in the efficiency of the AM symbiosis linked to domestication. Under high fertilization, domestication could have altered the regulation of resource trafficking between AM fungi and associated plant hosts. Provided that crops are commonly raised under high fertilization, this result has important implications for sustainable agriculture.
Publisher: England: New Phytologist Trust
Language: English

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Impacts of domestication on the arbuscular mycorrhizal symbiosis of 27 crop species

Martín-Robles, Nieves ; Lehmann, Anika ; Seco, Erica ; Aroca, Ricardo ; Rillig, Matthias C ; Milla, Rubén

England: New Phytologist Trust

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