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Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

López, Silvina Marianela Yanil, Pastorino, Graciela Noemi, Franco, Mario Emilio Ernesto, Medina, Rocio, Lucentini, César Gustavo, Saparrat, Mario Carlos Nazareno, Balatti, Pedro Alberto
Agronomy 2018 v.8 no.8
Solanum lycopersicum, anti-infective agents, biological control, community structure, cultivars, endophytes, genotype, hybrids, phytobiome, plant growth, plant pathogenic fungi, seeds, spore-forming bacteria, tomatoes, Argentina
Tomato (Solanum lycopersicum L.) is probably the most important vegetable consumed around the world, and like other produce is affected by stresses and diseases that reduce the yield and production. The purpose of this work was to study the phytobiome of the tomato seeds of two hybrids in order to understand first of all whether tomato cultivars host similar groups of organisms, as well as their effect on the community structure, particularly of those microbes with the potential to promote growth and/or control plant pathogens. Different cultivars of tomato (genotypes) host significantly different endophytic communities, which is also reflected at the order level. These communities are particularly rich in spore-forming bacteria that have the ability either to promote plant growth or synthetize antimicrobial compounds that deter plant pathogens. We conclude that the seeds of the tomato cultivars Elpida and Silverio are sources of endophytic bacteria capable of synthetizing antifungal substances that could potentially be used for biocontrol against plant-pathogenic fungi.