Local and systemic proteomic changes in medicago truncatula at an early phase of Sinorhizobium meliloti infection

Journal of Proteome Research
Barbara MolesiniTiziana Pandolfini

Abstract

A symbiotic association with N-fixing bacteria facilitates the growth of leguminous plants under nitrogen-limiting conditions. The establishment of the symbiosis requires signal exchange between the host and the bacterium, which leads to the formation of root nodules, inside which bacteria are hosted. The formation of nodules is controlled through local and systemic mechanisms, which involves root-shoot communication. Our study was aimed at investigating the proteomic changes occurring in shoots and concomitantly in roots of Medicago truncatula at an early stage of Sinorhizobium meliloti infection. The principal systemic effects consisted in alteration of chloroplast proteins, induction of proteins responsive to biotic stress, and changes in proteins involved in hormonal signaling and metabolism. The most relevant local effect was the induction of proteins involved in the utilization of photosynthates and C-consuming processes (such as sucrose synthase and fructose-bisphosphate aldolase). In addition, some redox enzymes such as peroxiredoxin and ascorbate peroxidase showed an altered abundance. The analysis of local and systemic proteome changes suggests the occurrence of a stress response in the shoots and the precocious alter...Continue Reading

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Citations

Nov 14, 2015·Proteomics·Divya RathiNiranjan Chakraborty
May 1, 2015·Frontiers in Plant Science·Junjie HuNatalia V Bykova
Aug 5, 2017·Frontiers in Plant Science·Estíbaliz Larrainzar, Stefanie Wienkoop
Jan 6, 2021·International Journal of Molecular Sciences·Marouane BaslamTakuji Ohyama

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