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early regulation of genes putatively related to rice root-knot nematode (RRKN) Meloidogyne graminicola damage-associated molecular pattern recognition (e.g. wall-associated receptor kinases), signalling (nucleotide-binding, leucine-rich repeat (NLRs)), pathogenesis-related (PR) genes (PR1, PR10a), defence-related genes (NB-ARC domain-containing genes), as well as a large number of genes involved in secondary metabolites including diterpenoid biosynthesis (CPS2, OsKSL4, OsKSL10, Oscyp71Z2, oryzalexin synthase, and momilactone A synthase) is observed in rice Meloidogyne graminicola-resistant mutant line-9. After the nematode juveniles penetrate the roots of line-9, early recognition of invading nematodes triggers plant immune responses mediated by phytoalexins, and other defence proteins such as PR proteins inhibit nematode growth and reproduction. Mechanisms underlying plant-nematode resistance in rice, overview |
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