Phytophthora species are known as "plant destroyers" capable of initiating single zoospore infection in the presence of a quorum of chemical signals from the same or closely related species of oomycetes. Since the natural oomycete population is too low to reach a quorum necessary to initiate a disease epidemic, creation of the quorum is reliant on alternate sources. Here, we show that a soil ba...

Phytophthora nicotianae is a devastating oomycete plant pathogen with wide host range. On tobacco, it causes black shank, disease that can result in severe economic losses. Deployment of resistance one the most effective means controlling tobacco but adaptation to complete and partial by P. limit long-term effectiveness resistance. The molecular basis largely unknown. RNAseq was performed on tw...

The tobacco-feeding race of Myzus persicae (Sulzer), formerly known as M. nicotianae Blackman, was introduced into Chile during the last decade. In order to evaluate the genetic diversity and insecticide resistance status of Chilean tobacco aphid populations, a field survey was conducted in 35 tobacco fields covering a 300 km latitudinal survey. The populations sampled were characterized using ...