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ROLE OF SALICYLIC ACID IN INDUCTION OF TOMATO RESISTANCE TO ROOT-KNOT NEMATODE MELOIDOGYNE INCOGNITA (KOFOID & WHITE, 1919) CHITWOOD, 1949
Lavrova V.V. Udalova Zh.v., Zinovieva S.V., Matveeva E.M., Kalinkina D.S. Institute of Biology, Karelian Research Center, RAS; Severtsov Institute of Ecology and Evolution, RAS, All-Russian K.I.Skryabin Scientific Research Institute of Fundamental and Applied Parasitology of Animals and Plants
Summary
Resistance gene expression (Mi1.2), activity of proteinase inhibitor and phenylalanine ammonia-lyase, phytoalexin content of resistance and susceptible tomato hybrids to root-knot nematode M. incognita under nematode invasion and salicylic acid treatment were studied. The use of exogenous salicylic acid treatment of susceptible tomato plants modulates the level of transcript accumulation of resistance gene (Mi1.2) and shifts the host-parasite relationship of host susceptibility to its resistance. It is shown that the increased Mi1.2 gene expression of susceptible tomato plants after salicylic acid treatment may be sufficient to activate plant defense reactions (phytoalexins, proteinase inhibitors, phenylalanine ammonia-lyase) after contact with the nematode effectors, and, respectively, increase tomato resistance to M. incognita.
© 2016 The Author(s). Published by All-Russian Scientific Research Institute of Fundamental and Applied Parasitology of Animals and Plants named after K.I. Skryabin.
This is an open access article under the Agreement of 02.07.2014 (Russian Science Citation Index (RSCI) and the Agreement of 12.06.2014 (CABI.org / Human Sciences section).