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Genetic diversity and pathogenicity-related genes of the fungal pathogen associated with oak mortality in South Korea

Projects Posted on: August 20, 2019
Since 2004, extensive mortality of oak (Quercus mongolicae) has been occurring in South Korea. This oak mortality is associated with a fungus (Raffaelea quercus-mongolicae), which is vectored by a wood-boring ambrosia beetle (Platypus koryoensis). High-resolution genetic markers were used to assess the genetic diversity of 54 fungal isolates from five South Korean provinces, and results suggest that this fungal pathogen was introduced to South Korea. Genomic sequencing of the fungus provided evidence of genes associated with causing tree disease, and allowed comparisons with related fungi.

Assessing the complex relationship between landscape, gene flow, and range expansion of a Mediterranean carnivore

Publications Posted on: June 14, 2019
Landscape resistance is often disregarded in studies of range expansions and population connectivity.

Simulating impacts of rapid forest loss on population size, connectivity and genetic diversity of Sunda clouded leopards (Neofelis diardi) in Borneo

Publications Posted on: September 26, 2018
Habitat loss is the greatest threat to biodiversity in Borneo, and to anticipate and combat its effects it is important to predict the pattern of loss and its consequences. Borneo is a region of extremely high biodiversity from which forest is being lost faster than in any other.

Quantifying functional connectivity: The role of breeding habitat, abundance, and landscape features on range-wide gene flow in sage-grouse

Publications Posted on: May 11, 2018
Functional connectivity, quantified using landscape genetics, can inform conservation through the identification of factors linking genetic structure to landscape mechanisms.

Phylogenetic and population analyses of the invasive brown root-rot pathogen (Phellinus noxius) highlight the existence of at least two distinct populations

Publications Posted on: December 12, 2017
Phellinus noxius (Corner) G. H. Cunn is a vastly destructive, fast-growing pathogen that affects a wide range of woody hosts in pan-tropical areas, including Asia, Australia, Africa, and Oceania (Ann et al. 2002). This invasive pathogen causes brown root-rot disease on cacao, coffee, and rubber, as well as diverse fruit, nut, ornamental, and other native/exotic trees, and little host specificity is known to occur (Sahashi et al. 2010).

Genetic diversity of the myrtle rust pathogen (Austropuccinia psidii) in the Americas and Hawaii: Global implications for invasive threat assessments

Publications Posted on: September 19, 2017
Since the myrtle rust pathogen (Austropuccinia psidii) was first reported (as Puccinia psidii) in Brazil on guava (Psidium guajava) in 1884, it has been found infecting diverse myrtaceous species. Because A. psidii has recently spread rapidly worldwide with an extensive host range, genetic and genotypic diversities were evaluated within and among A.

Life history, population viability, and the potential for local adaptation in isolated trout populations

Publications Posted on: August 29, 2017
Habitat loss and fragmentation have caused population decline across taxa through impacts on life history diversity, dispersal patterns, and gene flow. Yet, intentional isolation of native fish populations is a frequently used management strategy to protect against negative interactions with invasive fish species.

Divergent population genetic structure of the endangered Helianthemum (Cistaceae) and its implication to conservation in northwestern China

Publications Posted on: January 10, 2017
Population genetic studies provide a foundation for conservation planning, especially for endangered species. Three chloroplast SSRs (mtrnSf-trnGr, mtrnL2-trnF, and mtrnL5-trnL3) and the internal transcribed spacer were used to examine the population structure of Helianthemum in northwestern China. A total of 15 populations of the genus were collected. Nine chloroplast haplotypes and two nuclear genotypes were detected.

Population structure of the golden snub-nosed monkey Rhinopithecus roxellana in the Qinling Mountains, central China

Publications Posted on: October 07, 2016
Environmental barriers and habitat fragmentation can restrict gene flow, leading to genetic divergence among animal populations. The golden snub-nosed monkey, Rhinopithecus roxellana, is endemic to China, and ranges across 4 provinces. However, over the past 40 years its populations have become fragmented. We investigated the genetic diversity, demographic history and population structure of R.

The application of genetic indicators in wild populations: Potential and pitfalls for genetic monitoring [Chapter 15]

Publications Posted on: September 12, 2016
The genetic aspects of biodiversity and conservation have been long recognised as important to the viability of populations and evolutionary potential of species (Lande 1988). Yet incorporating genetic considerations into conservation, management, and decision making has lagged behind this recognition (Mace et al. 2003; Laikre et al. 2010).

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