Effect Compounds Obtained from Olive Mill Waste on the Growth of Plant Pathogens

Agriculture and Agricultural Science Procedia - Leontopoulos, S. V. Giavasis, I. Petrotos, K. Kokkora, M. Makridis, Ch

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

Plant phenolics derived from olive mill waste extracts hold promise for the organic and eco-friendly management of tomato pathogens.
Effect of Different Polyphenolic Compounds Obtained from Olive Mill Waste on the Growth of Several Plant Pathogens.

What is the problem?

Researchers from the Technological Educational Institute of Thessaly­ in Greece investigated the effects of using OMWW polyphenolic compounds as a defence against 14 plant common plant fungi.

What did the research involve?

  • Leontopoulos et al. (2015) studied the effects of varous concentrations of polyphenolic compounds (3%, 5 %, 10 %, 15 %, 20 %, 25 %, 30 %, 35 %, 40 % and 50 %) had on 14 microbial plant pathogens.
  • Pathogens tested were Botrytis cinereal, Alternaria alternate, Ascochyta lentis, Penicillium italicum, expansum, Eutypa lata, Fusarium oxysporum, V. dahlia (olive), V. dahlia (tomato), Rhizoctonia solani, Sclerotinia sclerotiorum, Aspergillus flavus, Aspergillus niger and Cercospora beticola.
  • The pathogens were cultured on agar in the lab and then aplied to damaged tissues on tomato plants used as inoculation sites.

What were the key findings?

  • Olive mill waste in low concentraions could control some of the fungal pathogens, primarily Botrytis cinerea, Sclerotinia sclerotiorum and Ascochyta lentis
  • Higher concentrations of OMWW appeared to be toxic to the plant

Final comment

The results are encouraging for OMWW to be used as a natural pathogenic fungi control, but more studies and modifications may be needed.


This paper was summarised by Luke Stafford (Bachelor of Biological Sciences with Honours – Botany and Genetics Majors (La Trobe University) and reviewed by Nickala Best (PhD Student (La Trobe University). Learn more about Luke and Nickala here.

2017 - Greece - Agriculture and Agricultural Science Procedia - Leontopoulos, S. V. Giavasis, I. Petrotos, K. Kokkora, M. Makridis, Ch
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