Differential control and function of Arabidopsis ProDH1 and ProDH2 genes upon infection with biotrophic and necrotrophic pathogens

CECCHINI NM

MOLECULAR PLANT PATHOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2017 p. 1164 - 1164

1464-6722

rabidopsis contains two proline dehydrogenase (ProDH) genes, ProDH1 and ProDH2, encoding for homologous and functional isoenzymes. While ProDH1 has been extensively studied, especially under abiotic stress, ProDH2 began to be analyzed in recent years. These genes display distinctive expression patterns and show weak transcriptional co-regulation but they are both activated in pathogen infected tissues. We previously demonstrated that Arabidopsis plants silencing ProDH1/2 expression fail to trigger defenses against the hemibiotrophic bacterial pathogen Pseudomonas syringae pv. tomato AvrRpm1 (Pst-AvrRpm1), and showed that ProDH1 and ProDH2 have differential regulation by salicylic acid (SA). In the current work, we used prodh1 and prodh2 single mutant plants to assess the particular contribution of each gene to resistance against Pst-AvrRpm1 and the necrotrophic fungal pathogen Botyrtis cinerea (B. cinerea). In addition, we studied the sensitivity of ProDH1 and ProDH2 to the jasmonic a