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Ex vivo analyses of formulated bio-elicitors from a phytopathogen in the improvement of innate immunity in host
Published in Taylor and Francis Ltd.
Volume: 49
Issue: 17-18
Pages: 485 - 505
Three different bio-elicitors viz. BE 1, BE 2 and BE 3 were formulated from Fusarium oxysporum f. sp. lycopersici. All three elicitors were screened for defence regulating capacity in an ex vivo system where Lycopersicum esculentum was used as a model host plant. Application of bio-elicitors on detached leaves showed varied degrees of defence induction and antioxidative enzymes and total phenol accumulation after 24 h incubation. Among all, BE 3 (2%) was found to be the most effective. Furthermore, production of nitric oxide (NO) was measured in treated leaves, and concurrently, the extent of oxidative damage was evaluated by measuring reactive oxygen species (ROS), malondialdehyde (MDA), proline and total chlorophyll content. All bio-elicitors except BE 3, which was effective at concentrations as low as 2%, showed enhanced production of MDA and proline and reduction in total chlorophyll at higher concentrations. These results suggest that among three elicitors tested, BE 3 (2%) can be used as a potential bio-elicitor in organic tomato farming. © 2016 Informa UK Limited, trading as Taylor & Francis Group.
About the journal
JournalData powered by TypesetArchives of Phytopathology and Plant Protection
PublisherData powered by TypesetTaylor and Francis Ltd.
Open AccessNo