Keyword: Cronartium ribicola

Whitebark pine encroachment into lower-elevation sagebrush grasslands in southwest Montana, USA

Projections for the future health and abundance of whitebark pine (Pinus albicaulis Engelm.) populations in western North America are dire. Not only has the species been declining due to the combined effects of fire exclusion policies, mountain pine beetle (Dendroctonus ponderosae Hopkins 1902) outbreaks, and white pine blister rust (Cronartium ribicola J.C.

Taking the long view and acting now - prioritizing management of high elevation five-needle pines

Some of the most vulnerable ecosystems include subalpine forests where growing space declines with elevation and species distributions are defined by distinct climatic gradients and biotic interactions. Climate change is projected to be rapid and heightened in these habitats, highlighting the importance of genetic diversity and adaptive capacity of plant species that occupy them (Millar et al. 2007).

Characterization of Cronartium ribicola dsRNAs reveals novel members of the family Totiviridae and viral association with fungal virulence

Background: Mycoviruses were recently discovered in the white pine blister rust (WPBR) fungus Cronartium ribicola (J.C. Fisch.). Detection and characterization of their double stranded RNA (dsRNA) would facilitate understanding of pathogen virulence and disease pathogenesis in WPBR systems. Methods: Full-length cDNAs were cloned from the dsRNAs purified from viral-infected C.

Limber pine (Pinus flexilis James) genetic map constructed by exome-seq provides insight into the evolution of disease resistance and a genomic resource for genomics-based breeding

Limber pine (Pinus flexilis) is a keystone species of high-elevation forest ecosystems of western North America, but some parts of the geographic range have high infection and mortality from the non-native white pine blister rust caused by Cronartium ribicola. Genetic maps can provide essential knowledge for understanding genetic disease resistance as well as local adaptation to changing climates.

Proactive limber pine conservation strategy for the Greater Rocky Mountain National Park Area

This proactive conservation strategy addresses the unique situation of limber pine in the Greater Rocky Mountain National Park Area (GRMNPA). The target area includes Rocky Mountain National Park and surrounding areas of northern Colorado and southern Wyoming.

Eucalyptus grandis anomaly related to expression of defense genes

In collaboration with the Suzano Papel and Celulose SA company, we identified an anomaly derived from a full-sib population in a controlled cross between two Eucalyptus grandis individuals. Abnormal seedlings died in a few months and showed significant phenotypic differences (P 0.1), suggesting that the lethality phenotype is controlled by a recessive allele (Tambarussi 2006).

Research on the rust hyperparasite Coregonladosporium tenuissimum: Status and prospects

The use of biological agents to control plant diseases is an attractive approach, especially at a time when managers and other stakeholders seek to limit the impact of synthetic pesticides. Further, chemical pesticides cannot be used in natural habitats because of their expense and potential negative effects on ecosystems.

Discovery of mycovirus community in the white pine blister rust ecosystems by rust transcriptome profiling

In North America, the nonnative rust fungus Cronartium ribicola kills immature native five-needle pine trees and indirectly predisposes maturing trees to secondary attack by insects and other fungi, which may result in severe mortality. Since the early 1900s when C.

Cytological analyses reveal variations in nuclear content along the urediniosporic infection cycle of Hemileia vastatrix and other rust fungi

The recent completion of genome sequencing for some rust fungi has contributed to suggest a link between biotrophic specialization and genome size expansion. The measurement of genome sizes for a selection of rust fungi has revealed some of the largest genomes among fungi, with nine rust species with haploid genomes between 300 and 780 Mbp. In particular, Uromyces appendiculatus, Phakopsora pachyrhizi, U.

The proactive strategy: Preparing the landscape for invasion by accelerating the evolution of resistance

Restoration of forests devastated by nonnative invaders often dominates the attention of forest managers and their actions. However, taking a broader view of the invasion beyond the crisis areas reveals opportunities where proactive management can alter the outcome of the invasion in threatened areas.