The black shank disease caused by Phytophthora nicotianae causes losses in tobacco crops up 100%. In Colombia, P. populations are poorly known causing wrong diagnostics and erratic management. Amplification of the Ypt1 gene morphological characteristics colonies, sporangia, chlamydospores hyphae were used to identify isolates. Races identified according reaction induced each isolate on differen...

A Phytophthora mating hormone with an array of 1,5-stereogenic centers has been synthesized by using our recently developed methodology of catalytic enantioselective conjugate addition of Grignard reagents. We applied this methodology in a diastereo- and enantioselective iterative route and obtained two of the 16 possible stereoisomers of Phytophthora hormone alpha1. These synthetic stereoisome...

In 2008 statewide surveys of symptomatic foliage of nursery plants from Tennessee resulted in isolation of 43 isolates of Phytophthora spp. This sample set includes four described species (P. citrophthora, P. citricola, P. nicotianae, P. syringae), and a provisional species of Phytophthora ('P. hydropathica'). At the same time a stream-baiting survey was initiated to recover Phytophthora from e...

This study was carried out to determine the antifungal effects of supernatant produced by bacterium Xenorhabdus szentirmaii, which is associated with soil-inhabiting entomopathogenic nematodes, on important plant pathogenic fungi, Fusarium verticilliodes, oxysporum f.sp lycopersici, radicis Botrytis cinerea, Sclerotinia sclerotiorum and Phytophthora nicotianae. The 1, 3, 5 7% concentrations X. ...

Abstract. Afandi A, Subandiyah S, Wibowo Hieno Afandi, Loekito Suga H, Kageyama K. 2021. Population genetics analysis of Phytophthora nicotianae associated with heart rot in pineapple revealed gene flow between populations. Biodiversitas 22: 3342-3348. has caused pineapple. This study identified the population genetic diversity P. nicotianae, collecting 90 isolates from plantation sites three p...

Transgenic potato and tobacco plants carrying the osmotin gene under the control of the cauliflower mosaic virus 35S promoter constitutively overexpressed osmotin to a level of approximately 2% of total cellular protein. Leaves of transgenic potato plants exhibited delayed development of disease symptoms after inoculation with spore suspensions of Phytophthora infestans, which is the cause of l...

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...