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Keyword: genetic resistance

Back from the brink: Framework to sustain resilience to species at risk

Science Spotlights Posted on: August 14, 2019
The Regeneration for Resilience (R4R) framework provides a decision structure to prioritize limited resources and utilize seedling planting and natural regeneration management to offer the best likelihood of success in positioning stands and landscapes to support resilience self-sustaining tree populations that are threatened by invasive pests. Effective management of forest regeneration dynamics can increase forest resilience and adaptive capacity to mitigate impacts of invasive species.

Regeneration for resilience framework to support regeneration decisions for species with populations at risk of extirpation by white pine blister rust

Publications Posted on: October 05, 2018
Natural forests are increasingly invaded by nonnative pests and pathogens that threaten host species with population extirpation and cascading ecological impacts.

Southern Rockies Rust Resistance Trial (SRRRT)

Projects Posted on: October 24, 2016
The Southern Rockies Rust Resistance Trial (SRRRT) was initiated in 2013 to verify the stability of genetic resistance to white pine blister rust identified during artificial screening tests for limber and Rocky Mountain bristlecone pines conducted in collaboration with Dorena Genetic Resource Center (Cottage Grove, OR). Over 700 seedlings were outplanted in the fall 2013 and another 700 seedlings in spring 2014. White pine blister rust is common in the forests in and around the SRRRT site providing a natural source of inoculum to the seedlings. The seedlings will be periodically assessed for signs and symptoms of white pine blister rust over the next 10 years – disease symptoms were first noted in 2016.

Range-wide vulnerability of limber pine: White pine blister rust resistance and climate interactions

Projects Posted on: October 21, 2016
Forest surveys alone cannot predict species vulnerability as they cannot determine if the remaining healthy trees are at risk for disease or if they have heritable genetic resistance to support future populations. This project takes range-wide common garden (198 families) and artificial inoculation with Cronartium ribicola (causal agent of white pine blister rust) in order to better undertand host population vulnerability and sustainability.

Disease resistance gene discovered in limber pine

Science Spotlights Posted on: August 13, 2015
Limber pine (Pinus flexilis) is being threatened by the lethal disease white pine blister rust, expanding bark beetle pressure, and climate change in mountain environments. Scientists have identified an exciting disease-free trait in limber pine consistent with inheritance by a single dominate gene.

Innovative control and management of white pine blister rust – the proactive strategy for mountaintop ecosystems

Projects Posted on: December 03, 2014
RMRS and partners have developed a strategy to sustain healthy high elevation pine populations and mitigate the impact of invasion by the non-native pathogen that causes the lethal disease white pine blister rust. This approach provides the science foundation for proactive management.   

Integrating regeneration, genetic resistance, and timing of intervention for the long-term sustainability of ecosystems challenged by non-native pests - a novel proactive approach

Publications Posted on: January 22, 2013
Global trade increases the likelihood of introduction of non-native, invasive species which can threaten native species and their associated ecosystems. This has led to significant impacts to forested landscapes, including extensive tree mortality, shifts in ecosystem composition, and vulnerabilities to other stresses.

Pitch canker of southern pines and recent cases in Florida, Louisiana, Mississippi, and Texas

Publications Posted on: September 29, 2008
Pitch canker disease causes a multitude of problems in all life stages of southern pines. It occurs in most southern states and can affect mature stands, plantations, seed orchards, and nurseries. It is now also known to occur in California and at least 6 other countries. Recent occurrences in the western Gulf region are typical of those farther east.