SECTION B: LIFE SCIENCES
B.Sc. in Engineering in Agribusiness and Chemistry, Universidad San Francisco de Quito. M.Sc. in Plant Breeding and Genetic Resource Management, Wageningen University (The Netherlands). Ph.D. in Molecular Plant Biology at the renowned Utrecht University (Netherlands). His work experience began in Ecuador in 1997 as a laboratory assistant for the physical-chemical analysis of soils. In the field he developed his experience in flower plantations as head of postharvest of roses, head of production of summer flowers, Asian and oriental lilies, head of the department of breeding of color cartridges (Zantedeschia), and as a researcher at Leiden University, Holland , Gent University, Belgium, and at the Universidad San Francisco de Quito, Ecuador. He is a professor at the ESP Army Polytechnic School, Central University of Ecuador, Utrecht University of the Netherlands, and currently as a Research Professor in the Agronomy career where he teaches on Biotechnology, Plant Physiology, Floriculture, Postharvest Management and Agricultural Microbiology. He has participated in important conferences such as the APS (American Phytopathological Society) in the United States, and conferences and presentations in Scotland, Australia, China, Holland, Germany, Ecuador, Belgium, England, among others. He has published for international and national media. His lines of research are the strengthening of the plant immune system through the use of resistance inducers and adequate mineral nutrition of the base to raise plant self-defense. There are several classes and types of resistance inducers, but unfortunately very few have been characterized and investigated according to their metabolic response and their protection time / duration against biotic or abiotic stress. Plant immunity elements and resistance inducers used in various crops, as well as studies on how nutrition influences plant defense will be important for the development of strategies for the control of pests and diseases. He has published in numerous high impact factor international journals such as Plant Cell, Plant Physiology, Nature Chemical Biology, Annual review of Cell and Developmental Biology, MPMI, Planta, etc.
Engineer in Biotechnological Processes and Master in Microbiology from Universidad San Francisco de Quito (Ecuador). PhD candidate in Environmental Biology at Utrecht University (Netherlands) in the Plant-Microbe Interaction research group. He is currently a research associate in the Department of Microbiome Ecology at the Netherlands Institute of Ecology (NIOO-KNAW), the Department of Biology at the University of North Carolina at Chapel Hill, and the Laboratory of Agricultural and Food Biotechnology of the San Francisco de Quito USFQ. His research focuses on understanding the mechanisms by which plants recruit microorganisms and how the composition of the microbiome can alter the phenotype of the plant, especially for resilience to biotic and abiotic stresses.
Banana (Musa × paradisiaca L.) cultivation is one of the most important agricultural activities for many countries, and it is the primary fruit consume worldwide. Integrated soil management and fertilization programs aims to enhance soil fertility while maintaining crop yields. A large body of literature examined the changes in soil properties associated with different fertility regimens. Despite the critical role of the plant-associated microbiome in plant health and productivity, the effects of different agricultural management systems on microbial communities' response in banana are poorly understood. This study reports the structure, diversity, and richness of the microbial community of the bulk soil, rhizosphere, and leaf of banana plants under organic and conventional management. Samples were obtained from two banana plantations located in the province of El Oro, Ecuador. The analysis was based on DNA sequencing of the V3-V4 region of the 16S rRNA gene for bacteria and the ITS2 region for fungi. Here, we found a significant effect of the management system in the bacterial and fungi community composition. In general terms, under a conventionally managed system, the richness and evenness of the bacterial and fungal community increased among the soil and rhizosphere compared to the organic farming system. Soil and rhizosphere under organic farming were associated with a higher relative abundance of Proteobacteria, Firmicutes, and Bacteroidetes and exhibited an overrepresentation of microbial genus know as plant growth-promoting, as well as genera involved in essential ecosystem processes. We also found that ASVs of the same genus respond differently to the two types of agricultural management on the soil and the rhizosphere. In comparison, the bacterial communities in the leaves were more similar in both types of management. Understanding how long-term cropping management systems shift the microbial diversity and structure at the level of individual microbial taxa, such as presented in this research, can help to design farming systems that can maintain high profitability of the banana crops by stimulating growth-promoting bacteria and those responsible for the suppression of the soil-borne disease.
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