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Keyword: forest disease

First report of the root-rot pathogen, Armillaria gallica, on koa (Acacia koa) and 'Ohi'a lehua (Metrosideros polymorpha) on the island of Kaua'i, Hawai'i

Publications Posted on: January 05, 2017
Koa (Acacia koa) and 'ohi'a lehua (Metrosideros polymorpha) are the two most dominant native tree species in Hawai‘i. Their populations are continuously decreasing, primarily because of forest disease (Dudley et al. 2007; Keith et al. 2015) and other biotic disturbances. In April 2015, Armillaria rhizomorphs were collected from woody hosts on the island of Kaua‘i, Hawai‘i.

Population genomic analyses of the brown root-rot pathogen, Phellinus noxius, examine potential invasive spread among Pacific islands

Publications Posted on: June 23, 2016
Phellinus noxius (Corner) G. H. Cunn is a vastly destructive, fast-growing fungal pathogen that affects a wide range of woody hosts in pan-tropical areas, including Asia, Australia, Africa, and Oceania (Ann et al. 2002; Figure 1) . This pathogen causes brown root-rot disease on cacao, coffee, and rubber, as well as diverse fruit, nut, ornamental, and other native/exotic trees, with little indication of host specificity (Sahashi et al. 2010).

A preliminary bioclimatic approach to predicting potential distribution of Phellinus noxious and geographical areas at risk from invasion

Publications Posted on: June 23, 2016
Phellinus noxius, the cause of brown root-rot disease, is an invasive pathogen that was first described by Corner in Singapore (Corner 1932). It has a wide host range of primarily woody plants representing over 200 species from diverse families (Ann et al. 2002).

Molecular genetic characterization of the koa-wilt pathogen (Fusarium oxysporum): Application of molecular genetic tools toward improving koa restoration in Hawai'i

Publications Posted on: June 23, 2016
Several forest diseases are causing serious threats to the native Hawaiian forest. Among them, koawilt disease (caused by Fusarium oxysporum) is damaging to native populations of koa (Acacia koa), and it also hinders koa restoration/reforestation. Because F. oxysporum likely represents a complex of species with distinct pathogenic activities, more detailed characterization is needed to better understand the F.

Can metagenetic studies of soil microbial communities provide insights toward developing novel management approaches for Armillaria root disease?

Publications Posted on: June 23, 2016
Armillaria root diseases are among the most damaging and broadly distributed group of forest diseases in the world (Lockman et al. in press). Armillaria root disease is typically more severe in highly susceptible tree species and in trees that are maladapted due to rapidly changing climatic conditions (Ayres and Lombardero 2000, Kliejunas et al. 2009, Sturrock et al. 2011).

An integrated taxonomic approach to survey Armillaria in Iran

Publications Posted on: June 23, 2016
Iran's most valuable forests are located on the coast of the Caspian Sea and cover 1.85 million ha in the northern region of the Alborz mountain range, which is the highest mountain range in the Middle East. Dense forests cover two major provinces, Gilan and Mazandaran; however, less than 10% of Iran is forested. These forests comprise temperate, deciduous, broad-leaved tree species .

Bioclimatic modeling predicts potential distribution of Armillaria solidipes and Pseudotsuga menziesii (Douglas-fir) under contemporary and changing climates in the interior western U.S.A

Publications Posted on: June 23, 2016
Pseudotsuga menziesii (Douglas-fir) is a dominant component of forest stands in much of western North America. It is an important tree to the timber industry, yielding more timber than any other species in North America. It is also extremely important for wildlife as habitat and food. Many small birds and mammals feed on its seeds . Armillaria solidipes [pending vote to conserve A. ostoyae (Redhead et al.

Ongoing molecular studies of Eucalyptus powdery mildew in Brazil

Publications Posted on: June 23, 2016
Powdery mildew diseases are caused by biotrophic fungi in the Erysiphales. These fungal pathogens are easily observed by the whitish powdery appearance caused by their colonization of the aerial surfaces on living plants (Stadnik & Rivera, 2001) (Figure 1).

Approaches to predicting potential impacts of climate change on forest disease: An example with Armillaria root disease

Publications Posted on: February 06, 2012
Climate change will likely have dramatic impacts on forest health because many forest trees could become maladapted to climate. Furthermore, climate change will have additional impacts on forest health through changes in the distribution and severity of forest disease. Methods are needed to predict the influence of climate change on forest disease so that appropriate forest management practices can be implemented to minimize disease impacts.