Recovery Plan for Scots Pine Blister Rust Caused by <i>Cronartium pini</i>

Histology of White Pine Blister Rust in Needles of Resistant and Susceptible Eastern White Pine

White Pine Blister Rust in High-Elevation White Pines: Screening for Simply-Inherited, Hypersensitive Resistance

Recent concern about survival and recovery of highelevation white pine ecosystems has returned white pine blister rust (caused by Cronartium ribicola) to prominence as a significant threat to forest health in the western U.S. (Samman et al., 2003). This, in turn, has spurred new research into potential rustresistance mechanisms in high-elevation white pines, including whitebark (Pinus albicauli...

TRANSITION PROBABILITIES: Whitebark Pine and Blister Rust in the Greater Yellowstone Ecosystem

Whitebark Pine (Pinus albicaulis) plays an integral role in the Greater Yellowstone Ecosystem (GYE). It has been often referred to as a keystone species due to the extensive changes that the ecosystem would undergo if the species were to be lost. Attributed to white pine blister rust (Cronartium ribicola) infection and mountain pine beetles (Dendroctonus ponderosae), the decline of the whitebar...

Virulence gene distribution and dynamics of the white pine blister rust pathogen in Western north america.

ABSTRACT We assayed the distribution and frequency of two genes of the blisterpathogen with specific virulence to major resistance genes in sugar pine and western white pine in inoculum from extensive parts of the hosts' ranges. The genes, vcr1 and vcr2, differentially neutralize the cognate resistance alleles Cr1 and Cr2 of the two respective hosts and are clearly marked by their interaction p...

Epicuticular Wax and White Pine Blister Rust Resistance in Resistant and Susceptible Selections of Eastern White Pine (Pinus strobus).

ABSTRACT Epicuticular wax on needles was evaluated for its influence on Cronartium ribicola infection of resistant and susceptible selections of Pinus strobus. Environmental scanning electron microscopy comparisons revealed that needles from a resistant selection of eastern white pine, P327, had a significantly higher percentage of stomata that were occluded with wax, fewer basidiospores germin...