Details

Autor(en) / Beteiligte

• Crockard, M.A
• Bjourson, A.J
• Cooper, J.E

Titel

new peroxidase cDNA from white clover: its characterization and expression in root tissue challenged with homologous rhizobia, heterologous rhizobia, or Pseudomonas syringae

Ist Teil von

• Molecular plant-microbe interactions, 1999-09, Vol.12 (9), p.825-828

Ort / Verlag

St Paul, MN: APS Press

Erscheinungsjahr

1999

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• Temporal reverse transcription-polymerase chain reaction (RT-PCR) expression analyses were performed on Trprx2, a new white clover peroxidase, with roots challenged with homologous rhizobia, heterologous rhizobia, and a pathogen, Pseudomonas syringae. Low levels of Trprx2 expression were evident in all rhizobial treatments but in P. syringae-treated clover background expression was dramatically reduced within 1 h and was undetectable in treatments inoculated for more than 3 h. Spraying 4 mM salicylic acid onto seedlings increased Trprx2 expression. These data suggest a defensive role for Trprx2 in white clover and indicate active defense suppression by the pathogen.