Phytol, a Constituent of Chlorophyll, Induces Root-Knot Nematode Resistance in via the Ethylene Signaling Pathway.

Root-knot nematodes (RKNs; spp.) parasitize the roots or stems of a wide range of plant species, resulting in severe damage to the parasitized plant. The phytohormone ethylene (ET) plays an important role in signal transduction pathways leading to resistance against RKNs.

Sclareol induces plant resistance to root-knot nematode partially through ethylene-dependent enhancement of lignin accumulation.

The root-knot nematode (RKN) is one of the most devastating parasitic nematodes of plants. Although some secondary metabolites released by the host plant play roles as defense substances against parasitic nematodes, the mechanism underlying the induction of such defense responses is not fully understood. We found that sclareol, a natural diterpene known as an antimicrobial and defense-related molecule, inhibited RKN penetration of tomato and Arabidopsis roots.

First report of Xiphinema brevicolle Lordello et Costa, 1961 (Nematoda, Longidoridae) in Japan.

Mixed populations of Xiphinema americanum-group species were detected from a root zone soil sample of Japanese holly, Ilex crenata, during a survey for plant-parasitic nematodes of commercial ornamental plant nurseries in Chiba Prefecture, Japan. From the result of the morphological study, the species were identified as Xiphinema brevicolle and Xiphinema sp. This is the first record of Xiphinema brevicolle in Japan.

Expression profile of jasmonic acid-induced genes and the induced resistance against the root-knot nematode (Meloidogyne incognita) in tomato plants (Solanum lycopersicum) after foliar treatment with methyl jasmonate.

We investigated what gene(s) in the plant roots have the positive role against repressing root-knot nematode (RKN) infection. We investigated the interaction between RKN infection and gene expression in the plant roots induced by methyl jasmonate (MeJA). We focused on the induced resistance response and the duration after foliar treatment with MeJA of 0.

Meloidogyne virulence locus molecular marker for characterization of selected mi-virulent populations of Meloidogyne spp. is correlated with several genera of betaproteobacteria.

Resistance to root-knot nematodes in tomato is conferred by the Mi resistance gene to the three most important species of Meloidogyne: M. arenaria, M. incognita, and M.

Effects of DL-methionine on hatching and activity of Meloidogyne incognita eggs and juveniles.

Several concentrations of DL-methionine were tested in the laboratory for their effects on Meloidogyne incognita (Kofoid & White) Chitwood egg hatching and juvenile activity in aqueous suspensions and infested soil. After 7 days in methionine solutions, the proportions of hatched eggs were reduced by 23.3% at 0.