CSIRO PUBLISHING Functional Plant Biology, 2013, 40, 1298–1309 http://dx.doi.org/10.1071/FP13096 A survey of genes involved in Arachis stenosperma resistance to Meloidogyne arenaria race 1 Carolina V. Morgante A,E, Ana C. M. Brasileiro B, Philip A. Roberts C, Larissa A. Guimaraes B, Ana C. G. Araujo B, Leonardo N. Fonseca B, Soraya C. M. Leal-Bertioli B, David J. Bertioli D and Patricia M. Guimaraes B AEmbrapa Semiárido, BR 428, Km 152, CP 23, 56302-970, Petrolina, PE, Brazil. BEmbrapa Recursos Genéticos e Biotecnologia, PqEB – Av W5 Norte, CP 02372, 70770-917, Brasília, DF, Brazil. CUniversity of California, Nematology Department, 2251 Spieth Hall Riverside, CA 92521, USA. DUniversidade de Brasília, Departamento de Genética e Morfologia, Campus Universitario Darcy Ribeiro, 70910-900, Brasília, DF, Brazil. ECorresponding author. Email:
[email protected] This paper originates from a presentation atthe ‘VIInternational Conference on Legume Genetics and Genomics (ICLGG)’ Hyderabad, India, 2–7 October 2012. Abstract. Root-knot nematodes constitute a constraint for important crops, including peanut (Arachis hypogaea L.). Resistance to Meloidogyne arenaria has been identified in the peanut wild relative Arachis stenosperma Krapov. & W. C. Greg., in which the induction of feeding sites by the nematode was inhibited by an early hypersensitive response (HR). Here, the transcription expression profiles of 19 genes selected from Arachis species were analysed using quantitative reverse transcription–polymerase chain reaction (qRT-PCR), during the early phases of an A. stenosperma–M. arenaria interaction. Sixteen genes were significantly differentially expressed in infected and non-infected roots, in at least one of the time points analysed: 3, 6, and 9 days after inoculation.