The authors are thankful to CCS Aosta Srl, Quart (AO) for financial support of a Ph.D. grant devoted to study the role and use of Actinobacteria in agricultural systems (symbiotic agriculture). The authors kindly acknowledge the EU COST Action FA1103: -Endophytes in Biotechnology and Agriculture‖ (www.endophytes.eu) for providing an international network of scientists devoted to increase knowledge and use of endophytes in plant production.
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