4 Works

Recent bark beetle outbreaks influence wildfire severity in mixed-conifer forests of the Sierra Nevada, California, USA

Rebecca Wayman & Hugh Safford
In temperate forests, elevated frequency of drought related disturbances will likely increase the incidence of interactions between disturbances such as bark beetle epidemics and wildfires. Our understanding of the influence of recent drought and insect-induced tree mortality on wildfire severity has largely lacked information from forests adapted to frequent fire. A recent unprecedented tree mortality event in California’s Sierra Nevada provides an opportunity to examine this disturbance interaction in historically frequent-fire forests. Using field data...

Data and analysis code for \"Forest recovery following extreme drought in California, USA: natural patterns and effects of pre-drought management\"

Derek Young, Marc Meyer, Becky Estes, Shana Gross, Amarina Wuenschel, Christina Restaino & Hugh Safford
This repository contains data and code for the paper "Forest recovery following extreme drought in California, USA: natural patterns and effects of pre-drought management" by Young et al., published in Ecological Applications. The abstract of the paper is as follows. Rising temperatures and more frequent and severe droughts are driving increases in tree mortality in forests around the globe. However, in many cases, the likely trajectories of forest recovery following drought-related mortality are poorly understood....

Accuracy of genomic selection and long-term genetic gain for resistance to Verticillium wilt in a genetically diverse strawberry population

Steven Knapp, Dominique Pincot, Michael Hardigan, Glenn Cole, Peter Henry, Thomas Gordon & Randi Famula
Verticillium wilt, a soil-borne disease caused by the fungal pathogen Verticillium dahliae, threatens strawberry (Fragaria × ananassa) production worldwide. The development of resistant cultivars has been a challenge since the disease was first reported on strawberry in the early 1900s. The empirical evidence suggests that genetic gains have not been negligible and that the genetics of resistance to this pathogen is quantitative. While resistant cultivars have been developed, a comparatively small percentage are highly resistant,...

Unraveling the complex hybrid ancestry and domestication history of cultivated strawberry

Michael Hardigan, Anne Lorant, Dominique Pincot, Mitchell Feldmann, Randi Famula, Charlotte Acharya, Seonghee Lee, Sujeet Verma, Vance Whitaker, Nahla Bassil, Jason Zurn, Glenn Cole, Kevin Bird, Patrick Edger & Steven Knapp
Cultivated strawberry (Fragaria × ananassa) is one of our youngest domesticates, originating in early eighteenth-century Europe from spontaneous hybrids between wild allo-octoploid species (F. chiloensis and F. virginiana). The improvement of horticultural traits by 300 years of breeding has enabled the global expansion of strawberry production. Here, we describe the genomic history of strawberry domestication from the earliest hybrids to modern cultivars. We observed a significant increase in heterozygosity among interspecific hybrids and a decrease...

Registration Year

  • 2020
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  • 2019
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Affiliations

  • United States Department of Agriculture
    4
  • University of California, Davis
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  • University of Florida
    1
  • Michigan State University
    1