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Keyword: fungi

First report of the Armillaria root-disease pathogen, Armillaria gallica, associated with several woody hosts in three states of Central Mexico (Guanajuato, Jalisco, and Michoacan)

Publications Posted on: March 19, 2021
In July-August 2019, seven Armillaria isolates (derived from rhizomorphs and mycelial fans of infected roots) were collected in association with woody hosts in the central Mexico: states of Guanajuato (MEX204), Jalisco (MEX206, MEX208, MEX209), and Michoac´an (MEX211, MEX214, MEX216). All seven isolates were identified as Armillaria gallica based on translation elongation factor 1a (tef1) gene sequences (GenBank accession nos.

Reproduction and dispersal of biological soil crust organisms

Publications Posted on: November 20, 2019
Biological soil crusts (BSCs) consist of a diverse and highly integrated community of organisms that effectively colonize and collectively stabilize soil surfaces. BSCs vary in terms of soil chemistry and texture as well as the environmental parameters that combine to support unique combinations of organisms - including cyanobacteria dominated, lichen-dominated, and bryophyte-dominated crusts.

Characterizing forest root‐ and butt‐rot fungi in Yap, Palau, Pohnpei, Kosrae, Guam and Saipan [Chapter III]

Publications Posted on: June 23, 2016
Ganoderma and Phellinus are two common fungal genera causing butt-rot on trees growing on USA-affiliated islands of the western Pacific. Although these fungi can be quite prevalent, especially in some older mangrove stands, it appears that the majority of infections caused by these fungi leads to severe rotting of the heartwood but do not kill the living tissues of the sapwood, cambium and phloem.

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).

Fine-scale variability of forest soil fungal communities in two contrasting habitat series in northern Idaho, USA identified with microbial metagenomics

Publications Posted on: June 21, 2016
Forests are home to some of the most complex microbial communities (Fierer et al. 2012) which drive biogeochemical cycles (Clemmensen et al. 2013; van der Heijden et al. 2008) and account for substantial terrestrial biomass (Nielsen et al. 2011). Fungi, through their ecological roles as decomposers, mutualists, or pathogens, are particularly important in breaking down organic matter and mediating plant nutrition.

Roles of Woody Root-Associated Fungi in Forest Ecosystem Processes: Recent Advances in Fungal Identification

Publications Posted on: May 12, 2016
Interactions between fungi and woody roots may be critical factors that influence diverse forest ecosystems processes, such as wood decay (nutrient recycling); root diseases and their biological control; and endophytic, epiphytic, and mycorrhizal symbioses. However, few studies have characterized the diversity and the spatial and temporal distribution of woody root-associated fungi in forest ecosystems.

DNA-based characterization of wood-, butt- and root-rot fungi from the western Pacific Islands

Publications Posted on: March 26, 2016
Although the islands of the western Pacific comprise a hotspot of species, including fungi, a large number of these species have not been catalogued or documented in the scientific literature on an island to island basis.

Characterizing butt-rot fungi on USA-affiliated islands in the western Pacific

Publications Posted on: August 25, 2015
Ganoderma and Phellinus are genera that commonly cause tree butt-rot on USA-affiliated islands of the western Pacific. These fungal genera can be quite prevalent, especially in older mangrove stands. Although the majority of infections caused by these fungi lead to severe rotting of the heartwood, they typically do not directly kill the living tissues of the sapwood, cambium, or phloem.

The USDA Forest Service-RMRS forest fungi collection: Resource for fungal identification, developing biological controls, predicting invasive pathogens, and predicting potential impacts of climate change

Publications Posted on: August 25, 2015
The Moscow Forestry Sciences Laboratory of the Rocky Mountain Research Station (RMRS) has a unique collection of forest/tree-associated fungi with over 15,000 living specimens. Based in Moscow, ID, this USDA APHIS-PPQ (Plant Protection and Quarantine) containment facility houses fungal archives from approximately 35 states and 30 countries.

Phoretic symbionts of the mountain pine beetle (Dendroctonus ponderosae Hopkins)

Publications Posted on: June 27, 2014
During its life cycle, the tree-killing mountain pine beetle Dendroctonus ponderosae Hopkins interacts with phoretic organisms such as mites, nematodes, fungi, and bacteria. The types of associations these organisms establish with the mountain pine beetle (MPB) vary from mutualistic to antagonistic. The most studied of these interactions are those between beetle and fungi.