Ecology and Pathogenicity of Anastomosis and Intraspecific Groups of Rhizoctonia Solani Kuhn

Ogoshi, Akira

doi:10.1146/annurev.py.25.090187.001013

Cited by 565 publications

(364 citation statements)

References 0 publications

Supporting

Mentioning

327

Contrasting

Unclassified

Order By: Relevance

“…As a species, R. solani is composed of a large complex assemblage of anastomosis groups (AGs) that are genetically distinct nonmating populations showing a wide diversity in morphology, pathogenicity and physiology (Kuninaga et al 1997;Ogoshi 1987;Sneh et al 1991). Isolates of R. solani can exist simultaneously as bi-or multinucleate homokaryons or heterokaryons possessing either homothallic (asexual), bipolar or heterothallic mating systems resulting in a variety of mechanisms for generating genetic diversity within AGs (Adams 1996;Cubeta and Vilgalys 1997).…”

Section: Introductionmentioning

confidence: 99%

Assessing genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers

Godoy‐Lutz

Steadman

et al. 2012

J Gen Plant Pathol

View full text Add to dashboard Cite

genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers" (2012). Papers in Plant Pathology. 273. http://digitalcommons.unl.edu/plantpathpapers/273 Abstract Web blight, an important foliar disease of dry beans in the Americas, is a challenge to manage. We studied genetic variation of 92 isolates of Rhizoctonia solani subgroups AG-1-IE and AG-1-IF using DNA fingerprinting methods and mycelial compatibility grouping. The isolates were collected over 13 years from bean fields in the Dominican Republic, Honduras and Puerto Rico. Cluster and AMOVA analysis of combined data from two universal rice primers and two internal sequence repeats revealed significant genetic variation among and within populations of both subgroups. Variation was influenced by geographic origin and sampling year for AG-1-IE isolates and geographic origin for AG-1-IF isolates. Mycelial compatibility of paired isolates was mostly scored as incompatible in both subgroups and supported many unique phenotypes. Only two isolates of AG-1-IE displayed mycelial compatibility and DNA fingerprints, suggesting clonal origin. Genetic variation in these AG-1-IE and AG-1-IF isolate populations may explain the lack of durable resistance to web blight reported in dry beans.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessing genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers

Godoy‐Lutz

Steadman

et al. 2012

J Gen Plant Pathol

View full text Add to dashboard Cite

show abstract

“…Ogoshi (1987) has subdivided a number of AG into smaller groups termed intraspecific groups (ISG) on the basis of anastomosis behaviour. RI-64 belongs to a different I5G than the other Japanese isolate C96 (Table I).…”

Section: Discussionmentioning

confidence: 99%

“…For analysis of RFLPs mycelium was grown in Petri dishes (Sweetingharn et al, 1986;Cruickshank, 1990); AG, anastomosis groups (Ogoshi, 1987); ND, not determined.…”

Section: Growth and Isolation Of Dnamentioning

confidence: 99%

See 1 more Smart Citation

Molecular markers in Australian isolates of Rhizoctonia solani

O’Brien

1994

Mycological Research

View full text Add to dashboard Cite

“…1981). Rhizoctonia solani Kûhn, the causal organism of canker and black scurf of potatoes, has a wide host range including many of the crops used in rotation with potatoes (Ogoshi 1987). Potato wilt pathogens such as Verticillium dahliae Kleb.…”

mentioning

confidence: 99%

A note on the incidence of soilborne fungi in six crops used in rotation with potatoes

Celetti¹,

Johnson²,

Platt³

2005

phyto

View full text Add to dashboard Cite

L'incidence des champignons telluriques a été déterminée dans les tissus immédiatement sous la ligne de sol chez le trèfle (Trifolium hybridum et T. pratense), le pois (Pisum sativum), le soya (Glycine max), le ryegrass (Lolium multiflorum) cultivés en rotation avec les pommes de terre (Solanum tuberosum). Les légumineuses avaient une incidence significativement plus élevée de Verticillium albo-atrum, Colletotrichum coccodes et Fusarium solani que les graminées. Les pois avaient l'incidence la plus élevée de V. albo-atrum et de F. solani. Le C. coccodes a été isolé plus fréquemment du soya que du trèfle, des pois, du ryegrass, de l'orge ou du blé d'automne. Le Verticillium dahliae a été isolé de toutes les cultures, excepté le trèfle. Les graminées avaient une incidence significativement plus élevée de V. dahliae que les légumineuses. L'incidence du Fusarium sambucinum était plus élevée chez le soya que chez les autres cultures. Le Fusarium oxysporum a été isolé plus fréquemment du soya et de l'orge. L'incidence la plus élevée de Rhizoctonia solani a été trouvée chez le trèfle mais il a été également isolé plus fréquemment du blé d'automne et du ryegrass que du soya et de l'orge.The incidence of soilborne fungi was determined in tissue immediately below the soil line of clover (Trifolium hybridum and T. pratense), peas (Pisum sativum), soybean (Glycine max), ryegrass (Lolium multiflorum), barley (Hordeum vulgare), and winter wheat (Triticum aestivum) grown in rotation with potatoes (Solarium tuberosum). Legume crops had significantly higher incidence of Verticillium albo-atrum, Colletotrichum coccodes, and Fusarium solani than the gramineaceous crops. Peas had the highest incidence of V. albo-atrum and F. solani.C. coccodes was isolated more frequently from soybean than from clover, peas, ryegrass, barley, or winter wheat. Verticillium dahliae was isolated from all crops except clover. Gramineaceous crops had a significantly higher incidence of V. dahliae than legume crops. The incidence of Fusarium sambucinum was higher in soybeans than all other crops. Fusarium oxysporum was isolated most frequently from soybeans and barley. The highest incidence of Rhizoctonia solani was in clover, but it was also isolated more frequently from winter wheat and ryegrass than from soybean and barley

show abstract

Ecology and Pathogenicity of Anastomosis and Intraspecific Groups of Rhizoctonia Solani Kuhn

Cited by 565 publications

References 0 publications

Assessing genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers

Assessing genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers

Molecular markers in Australian isolates of Rhizoctonia solani

A note on the incidence of soilborne fungi in six crops used in rotation with potatoes

Contact Info

Product

Resources

About