β-Aminobutyric Acid–Induced Resistance Against Root-Knot Nematodes in Rice Is Based on Increased Basal Defense

• DOI: 10.1094/mpmi-09-14-0260-r
• Publication Date: 2015-01-21T19:18:04Z
• Authors: Hongli Ji; Tina Kyndt; Wen He; Bartel Vanholme; Godelieve Gheysen
• Keywords: Callose; Jasmonic acid; Graminicola; Root-knot nematode; Defence mechanisms

The nonprotein amino acid β-aminobutyric (BABA) is known to protect plants against various pathogens. mode of action relatively diverse and specific in different plant-pathogen systems. To extend the analysis BABA plant-parasitic nematodes monocot plants, we evaluated effect root-knot nematode (RKN) Meloidogyne graminicola rice. treatment rice inhibited penetration resulted delayed giant cell development. BABA-induced resistance (BABA-IR) was still functional mutants or transgenics defective salicylic biosynthesis response abscisic (ABA) response. Pharmacological inhibition jasmonic (JA) ethylene (ET) indicated that BABA-IR RKN likely occurs independent JA ET. However, histochemical biochemical quantification combination with quantitative real-time reverse transcription-polymerase chain reaction data suggest protects through activation basal defense mechanisms plant, such as reactive oxygen species accumulation, lignin formation, callose deposition.