Doris Zúñiga-Dávila is Principal Professor at the Department of Biology, Faculty of Sciences at Universidad Nacional Agraria La Molina (Peru). She is head of the the Microbial Ecology and Biotechnology lab and coordinator of the Ph.D. Program of Biological Science and Engineering. Her research interests are primary directed towards the study on the microbiology, physiology, molecular biology and ecology of nitrogen-fixing and plant growth promoting microorganisms. She has published many papers and several book chapters and serves as reviewer in journals.Fernando González-Andrés is Professor of Plant Production at the University of León (Spain). He also teaches as Visiting Professor, in other foreign Universities as the "Universidad Autónoma de Chapingo" (México). He is member of the Resarch Group Environmental and Chemical Engeneering and Bioprocesses (IQUIMAB -Spain), recognised as a Consolidated Research Unit, being the leader of the research line "Biofertlizers for SustainableAgriculture". As an Agricultural Engineer PhD, his resarch interest is focused in the agronomical aspect of the Microbial Plant Biostimulants. With this approach, his research topics consists on  the development and opimization of efficient formulations based on elite bacteria strains, for crops biostimulation and biocontrol of diseases, focusing on the genetic basis of the superiority of elite strains, and in the genetic approach of the interaction plant-microorganism. He is also involved in the assessment of the environmental impact of fertilizers in soil microbiota by a metataxonomic approach . The engineering process of plant biostimulatns production is part of his research interests, in colaboration with other members of the group IQUMAB. He has published 48 Scientific papers in Intenational journals indexed in the SCI, 13 book chapters and has edited or co-edited 7 books, in scientifically recognised publishers. He is co-author of one internationalpatent about a microbial plant biostimulant for mineral fertilizers.  Moreover he has publisehd 14 articles for the dissemniation of scientific knowledge. He serves also as Associate Editor in two international scientific journals.  Ernesto Ormeño-Orrillo is Principal Professor at the Department of Biology, Faculty of Sciences at Universidad Nacional Agraria La Molina (Peru) and is a researcher at the Microbial Ecology and Biotechnology lab. His research interests are primary in biotechnology, biodiversity and microbial genomics, specifically on plant-microbe interactions and on evolution, phylogeny and taxonomy of bacteria. He has published 56 papers and 6 book chapters. He is editor of the Systematic and Applied Microbiology journal and reviewer in several journals.