Thesis Defence: Marieta Marin Bruzos

Title: Actinomycete diversity associated with cherry tree rhizospheres and their potential as microbial inoculants

Congratulations to Marieta Marin Bruzos who successfully defended her thesis this past week on March 16, 2020. Please read her abstract below, and CLICK HERE if you would like to know more about Marieta and her research.

Abstract: Replant disease may affect fruit trees planted in orchards previously established with a related crop. Soils from replant disease-affected orchards have been related to high populations of plant-parasitic nematodes and fungi. The use of chemicals to control soil pathogens was recently restricted due to the damage they cause to the environment and human health. Thus, new eco-friendly alternative products for agriculture are needed. The aim of my study was to isolate beneficial bacteria from cherry tree rhizospheres with the potential to control soil-borne pathogens and promote plant health. We also studied how different land management practices, such as the use of compost and mulch, fumigation, and land-use history, influence the diversity of soil bacterial communities. Five bacterial strains were isolated with potential to be used as biocontrol agents. Compost and mulch did not show any effect on the bacterial communities; however, soil biodiversity decreased with chemical fumigation.