| Autor: |
Migunova VD; A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia., Tomashevich NS; Federal State Budgetary Scientific Institution, Federal Scientific Center of Biological Plant Protection (FSBSI FSCBPP), 350039 Krasnodar, Russia., Konrat AN; Federal State Budget Scientific Institution, Federal Scientific Centre VIEV (FSC VIEV) of RAS, Bolshaya Cheryomushkinskaya 28, 117218 Moscow, Russia., Lychagina SV; Federal State Budget Scientific Institution, Federal Scientific Centre VIEV (FSC VIEV) of RAS, Bolshaya Cheryomushkinskaya 28, 117218 Moscow, Russia., Dubyaga VM; Federal State Budgetary Scientific Institution, Federal Scientific Center of Biological Plant Protection (FSBSI FSCBPP), 350039 Krasnodar, Russia., D'Addabbo T; Institute for Sustainable Plant Protection, CNR, Via G. Amendola 122/D, 70126 Bari, Italy., Sasanelli N; Institute for Sustainable Plant Protection, CNR, Via G. Amendola 122/D, 70126 Bari, Italy., Asaturova AM; Federal State Budgetary Scientific Institution, Federal Scientific Center of Biological Plant Protection (FSBSI FSCBPP), 350039 Krasnodar, Russia. |
| Abstrakt: |
Root-knot disease caused by Meloidogyne incognita leads to significant crop yield losses that may be aggravated by the association with pathogenic fungi and bacteria. Biological agents can be effectively used against the complex disease of root-knot nematode and pathogenic fungi. In this study, 35 bacterial strains were analyzed for their in vitro nematicidal, antagonistic and growth stimulation activities. Based on results from the in vitro assays, grow-box experiments on tomato and cucumber were carried out with the strain BZR 86 of Bacillus velezensis applied at different concentrations. Effects of B. velezensis BZR 86 on the development of root-knot disease were evaluated by recording root gall index, number of galls and number of eggs in egg masses. Application of B. velezensis BZR 86 noticeably decreased the development of root-knot disease on tomato and cucumber plants, as well as significantly increased growth and biomass of cucumber plants in accordance with bacterial concentration. This study seems to demonstrate that strain B. velezensis BZR 86 could be an additional tool for an environmentally safe control of root-knot disease on horticultural crops. |
