Coordinated Changes In The Accumulation Of Metal Ions In Maize (Zea mays ssp. mays L.) In Response To Inoculation With The Arbuscular Mycorrhizal FungusFunneliformis mosseae

M. Rosario Ramirez-Flores, Ruben Rellan-Alvarez, Barbara Wozniak, Mesfin-Nigussie Gebreselassie, Iver Jakobsen, Victor Olalde-Portugal, Ivan Baxter, Uta Paszkowski, Ruairidh J.H. Sawers
2017 · doi:10.1101/135459
preprint OA: closed CC-BY-NC-ND-4.0
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Abstract

Arbuscular mycorrhizal symbiosis is an ancient interaction between plants and fungi of the phylum Glomeromycota. In exchange for photosynthetically fixed carbon, the fungus provides the plant host with greater access to soil nutrients via an extensive network of root-external hyphae. Here, to determine the impact of the symbiosis on the host ionome, the concentration of nineteen elements was determined in the roots and leaves of a panel of thirty maize varieties, grown under phosphorus limiting conditions, with, or without, inoculation with the fungus Funneliformis mosseae. Although the most recognized benefit of the symbiosis to the host plant is greater access to soil phosphorus, the concentration of a number of other elements responded significantly to inoculation across the panel as a whole. In addition, variety-specific effects indicated the importance of plant genotype to the response. Clusters of elements were identified that varied in a coordinated manner across genotypes, and that were maintained between non-inoculated and inoculated plants. Abbreviations NC non-colonized M mycorrhizal SDW shoot dry weight ICP-MS inductively coupled plasma mass spectrometry PC principal component

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License: CC-BY-NC-ND-4.0