Armillaria nabsnona, a New Species from Western North America

Volk, Thomas; Burdsall, Harold H.; Banik, Mark T.

doi:10.2307/3760888

Cited by 31 publications

(26 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In North America, Armillaria currently comprise one undescribed, unnamed biological species (NABS X; Anderson and Ullrich 1979) and nine formally described, named species (Volk and Burdsall 1995) Volk & Burdsall, A. cepistipes Velenovský, and A. tabescens (Scopoli) Emel. Previous studies have attempted to distinguish these species using DNA-based methods, such as rDNA restriction fragment length polymorphisms (RFLPs) (Harrington and Wingfield 1995;Volk et al 1996;White et al 1998;Kim et al 2000;McLaughlin and Hsiang 2010), anonymous DNA sequences (PierceyNormore et al 1998), rDNA sequences [internal transcribed spacer (ITS), intergenic spacer (IGS), small subunit (SSU), large subunit (LSU); Anderson and Stasovski 1992;Kim et al 2006], amplified fragment length polymorphisms (AFLPs) (Kim et al 2006), and nuclear DNA content (Kim et al 2000) with varying degrees of success. Because Armillaria species can display great differences in pathogenicity, it is critical to accurately identify Armillaria spp.…”

mentioning

confidence: 99%

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

et al. 2012

View full text Add to dashboard Cite

The translation elongation factor-1 alpha (EF-1a) gene was used to examine the phylogenetic relationships among 30 previously characterized isolates representing ten North American Armillaria species:American biological species X, A. cepistipes, and A. tabescens. The phylogenetic relationships revealed clear separation of all ten North American Armillaria species, with the exception of one A. gallica isolate that perhaps represents an unnamed cryptic species. These results indicate that the EF-1a gene could potentially serve as a diagnostic tool for distinguishing among currently recognized North American biological species of Armillaria.

show abstract

mentioning

confidence: 99%

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Our finding of A. gallica in South Carolina further extends the southeastern distribution of this species. Based on reports of A. gallica from western North America (Morrison et al, 1985;Volk et al, 1996), the western North American range of A. gallica is relatively continuous from British Columbia to Baja California, Mexico.…”

Section: Discussionmentioning

confidence: 99%

“…and A. gemina Bèrubè & Dessur. are thought to be unique to North America, while the seven other species (A. cepistipes Velen., A. gallica, A. mellea, A. nabsnona Volk & Burdsall, A. solidipes Peck (formerly known as A. ostoyae; Burdsall & Volk, 2008), A. sinapina Bèrubè & Dessur., and A. tabescens (which may be referred to as A. socialis; Antonin et al, 2006)) are also found on other continents of the northern hemisphere (Volk & Burdsall, 1995;Banik et al, 1996;Ota et al, 1998a). There is one North American biological species (NABS), NABS X, that is reproductively isolated and, as yet, taxonomically undescribed (Volk & Burdsall, 1995).…”

Section: Introductionmentioning

confidence: 94%

“…Also, haploid tester strains may degenerate over time, losing their ability to mate in vitro (Guillaumin et al, 1991), thereby contributing to ambiguous results. Mating tests are also insufficient for species-level identification in cases where field isolates do not mate with testers of any of the Armillaria species (Blodgett & Worrall, 1992;Banik et al, 1996), when field isolates mate with testers of two different Armillaria species (Anderson et al, 1980;Aguin-Casal et al, 2004), or when interspecific hybridization occurs (Kim et al, 2001). In addition, nuclear DNA content has been used as a means to separate A. gallica from closely related species (Kim et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Natural infection of an herbaceous host byArmillaria: a case study onHemerocallis^†

Blaedow

Baumgartner

Cox

et al. 2010

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

Symptoms of Armillaria root rot were observed on the herbaceous ornamental, Hemerocallis sp. (daylily), in a residential area in Walhalla, South Carolina, which was surrounded by dense, hardwood forest that also contained diseased hosts. Our objectives were to describe a natural occurrence of Armillaria root rot on daylily, a newly discovered host for the pathogen, and to characterize the Armillaria species involved. To characterize the Armillaria species collected from daylily, we used all available methods, including both traditional (sexual compatibility tests, basidiome morphology) and molecular (phylogenetic analyses of rDNA internal transcribed spacer, ITS, and intergenic spacer I, IGS-I) approaches. The presence of rhizomorphs in the topsoil of daylily beds and on the roots of symptomatic daylilies, coupled with our finding of identical ITS1 sequences among isolates originating from each of a rhizomorph, a daylily, and a neighbouring dogwood, suggests that Armillaria rhizomorphs had spread from native hosts to infect the daylilies. Basidiocarp morphology and basidiospore size best matched that documented for A. gallica. However, rDNA sequence analysis and sexual compatibility were not 100% conclusive. Phylogenetic analysis of ITS sequences revealed that the unknown Armillaria isolates were most closely related to A. calvescens and A. gallica. Analysis of IGS-I sequences was even less informative, grouping our isolates with A. cepistipes, A. gallica and A. sinapina. Sexual compatibility (mating) tests revealed that haploid isolates from daylily were compatible with three of the A. gallica tester isolates, but also one of the A. calvescens tester isolates. Our findings suggest a possible southerly distribution and expanded host range for A. gallica, and raise further questions about the Armillaria species concept as it pertains to the two closely related species, A. calvescens and A. gallica. Résumé:Les symptômes du pourridié-agaric ont été observés sur la plante herbacée ornementale Hemerocallis sp. (belle-d'un-jour) dans un quartier résidentiel de Walhalla, en Caroline du Sud, qui était entouré par une forêt dense de feuillus qui comportait également des arbres infectés. Nos objectifs étaient de décrire une occurrence naturelle du pourridié-agaric sur la belle-d'un-jour, un hôte récemment découvert, et de caractériser l'espèce d'Armillaria impliquée dans le processus. Afin de caractériser l'espèce d'Armillaria collectée sur la belle-d'un-jour, nous avons utilisé toutes les méthodes disponibles, y compris les méthodes traditionnelles (les tests de compatibilité sexuelle, la morphologie du basidiome) et moléculaires [les analyses phylogéniques de l'espaceur transcrit interne de l'ADNr (ITS) et de l'espaceur intergénique I (IGS-I)]. La présence de rhizomorphes dans le sol des massifs de belles-d'un-jour et sur les racines des plants affichant les symptômes, associée à notre découverte de séquences ITS1 identiques dans les isolats provenant d'un rhizomorphe, d'une belle-d'un-jour et d'un cornouiller voisin, su...

show abstract

“…Most of the species found to be reproductively isolated from one another in North America and Europe are also diflFerent with respect to some morphological characteristics (e.g. fruit-bodies, rhizomorphs) and are considered to be separate taxonomic species now formally described in the taxonomic literature (Roll-Hansen, 1985;Berube andDessureault, 1988, 1989;Mohammed et al, 1989;Marxmuller, 1992;Volk et al, 1996). The proposed Armillaria species concept based on sexual compatibility is summarized in Table 1.…”

Section: Conventional Methodsmentioning

confidence: 98%

Critical review of Identification Techniques for Armillaria spp. and Heterobasidion annosum Root and Butt Rot Diseases

Schulze

Bahnweg

1998

Journal of Phytopathology

View full text Add to dashboard Cite

The need for a rapid and definite diagnosis of the Armillaria spp. and Heterohasidion annosum root and butt rot diseases as well as general requirements expected of a test to detect the pathogens are reviewed. As a spin-off from more fundamental molecular biological research there has been a remarkable increase in new methods for diagnosis (i.e. detection and identification) in recent years. These new methods all have in comtnon that they use strtjctural elements of the target organisms such as proteins, polysaccharides, glycoproteins, nucleic acids, etc. for the construction of antibodies, probes and primers for detection, or to produce electrophoretic patterns to be used for classification and identification. This paper presents a short review of principles, advantages, disadvantages and some perspectives of the new methods developed for Armillaria spp. and H. annosum diagnosis compared with conventional ones, such as interfertility testing or visual inspection of the pathogens in situ and in vitro in pure culture. It will be noted that the specificity and reproducibility of the new techniques, which are closely linked with potential experimental error, lead to principal pitfalls which should be kept in mind when conclusions are drawn on data generated by them.Even though PCR-based methods become increasingly more widespread it is likely that most diagnostic methods will continue to be used or co-exist in some form in the future.

show abstract

Armillaria nabsnona, a New Species from Western North America

Cited by 31 publications

References 0 publications

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

Natural infection of an herbaceous host byArmillaria: a case study onHemerocallis^†

Critical review of Identification Techniques for Armillaria spp. and Heterobasidion annosum Root and Butt Rot Diseases

Contact Info

Product

Resources

About

Armillaria nabsnona, a New Species from Western North America

Cited by 31 publications

References 0 publications

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

Advances toward DNA-based identification and phylogeny of North American Armillaria species using elongation factor-1 alpha gene

Natural infection of an herbaceous host byArmillaria: a case study onHemerocallis†

Critical review of Identification Techniques for Armillaria spp. and Heterobasidion annosum Root and Butt Rot Diseases

Contact Info

Product

Resources

About

Natural infection of an herbaceous host byArmillaria: a case study onHemerocallis^†