Heterogeneity in electrophoretic karyotype within and between anastomosis groups of Rhizoctonia solani

Keijer, Jaap; Houterman, Petra M.; Dullemans, A.M.; Korsman, Marja G.

doi:10.1016/s0953-7562(96)80023-2

Cited by 47 publications

(33 citation statements)

References 25 publications

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“…However, the size of most basidiomycete, ascomycete, and some zygomecete genomes, are in the range 8-46 (Ayad-Durieux et al, 2000;Dusenberry, 1975;Keijer et al, 1996;Randhir and Hanau, 1997;W€ o ostemeyer and Burmester, 1986). Therefore, the genome size of G. intraradices is on the lower size range for fungal genomes and for eukaryotes.…”

Section: Discussionmentioning

confidence: 99%

The arbuscular mycorrhizal fungus Glomus intraradices is haploid and has a small genome size in the lower limit of eukaryotes

Hijri

Sanders

2004

Fungal Genetics and Biology

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Section: Discussionmentioning

confidence: 99%

The arbuscular mycorrhizal fungus Glomus intraradices is haploid and has a small genome size in the lower limit of eukaryotes

Hijri

Sanders

2004

Fungal Genetics and Biology

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“…It was first performed in the rDNA-ITS region for MNR Sinclair 1992, 1993;. The following RFLP studies were considerable for MNR (Liu et al 1995;Kanematsu and Naito 1995;Keijer et al 1996;Julian et al 1996;Schneider et al 1997;Hyakumachi et al 1998;Meyer et al 1998;Nicoletti et al 1999;Priyatmojo et al 2001;Godoy-Lutz et al 2003) and for BNR, using 28S rDNA (Mazzola 1997;Martin 2000) or rDNA-ITS (Sen et al 1999;Toda et al 1999b;Kasiamdari et al 2002;Hyakumachi et al 2005). PCRgenerated rDNA RFLP analyses supported a genetic basis for the classic anastomosis groups concept.…”

Section: Rdna Rflpmentioning

confidence: 99%

“…It was initially used for separating Saccharomyces cerevisiae chromosomes (Carle and Olson 1984;Schwartz and Cantor 1984) but was subsequently widely used in many other fungi, including Rhizoctonia spp. (Wako et al 1991;Keijer et al 1996). The first estimation of chromosome number and genome size of an AG 4 isolate was reported by Wako et al (1991).…”

Section: Electrophoretic Karyotypingmentioning

confidence: 99%

The advancing identification and classification of Rhizoctonia spp. using molecular and biotechnological methods compared with the classical anastomosis grouping

et al. 2006

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Anamorphic classification of Rhizoctonia spp. has been based on young cell nuclear numbers and hyphal fusion to anastomosis groups (AGs), in addition to the teleomorph classification. The widespread development of molecular biology techniques has added modern tools to support classification of organisms according to their genetics and evolutionary processes. These various methods have also been used in recent years for classification of Rhizoctonia. Data are continuously accumulating in the literature and the sequences in databases, which are readily available for researchers in the network systems. In the present review, attempts were made to describe and compare the advantages and disadvantages of the various methods for the classification of Rhizoctonia spp. Currently, the rDNAinternal transcribed spacer (ITS) sequence analysis seems to be the most appropriate method for classification of Rhizoctonia spp. Data of all the appropriate multinucleate Rhizoctonia (MNR) accumulated in GenBank were analyzed together in neighbor-joining (NJ) and maximumparsimony (MP) trees supplemented with percent sequence similarity within and among AGs and subgroups. Generally, the clusters of the isolate sequences were supportive of the AGs and subgroups based on hyphal fusion anastomosis. The review also indicates inaccuracies in designation of sequences of some isolates deposited in GenBank. The review includes detailed analyses of the MNR groups and subgroups, whereas complementary descriptions of the binucleate Rhizoctonia (BNR), uninucleate Rhizoctonia (UNR), and comprehensive interrelationships among all the currently available MNR, BNR, and UNR groups and subgroups in GenBank are to be discussed in a subsequent review article.

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“…Molecular aspects of pathogenicity Currently, very little is known about molecular aspects of R. solani pathogenicity on rice. The scarcity of molecular information on pathogenicity can be related to the relatively large genome size of the pathogen, estimated to be 37-71.5 Mbp (Cubeta et al 2009;Keijer et al 1996) and the lack of an efficient molecular transformation system. Isolates of R. solani have at least 11 chromosomes ranging in size from 0.6 to 6 Mbp (Keijer et al 1996), but the location of pathogenicity genes on the chromosomes is not known yet.…”

Section: Infection Processmentioning

confidence: 99%

Cytomolecular aspects of rice sheath blight caused by Rhizoctonia solani

Taheri

Tarighi

2010

Eur J Plant Pathol

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Sheath blight, caused by anastomosis group 1-IA of Rhizoctonia solani Kühn (teleomorph Thanatephorus cucumeris (Frank) Donk), is one of the most destructive rice diseases worldwide. The pathogen is able to infect plants belonging to more than 27 families, including many economically important monocots and dicots such as rice, wheat, alfalfa, bean, peanut, soybean, cucumber, papaya, corn, potato, tomato and sugar beet. It is a soil borne necrotrophic fungus that survives in plant debris as sclerotia, which are small brown-to-black, rocklike reproductive structures. The sclerotia can survive in the soil for several years and infect rice plants at the water-plant interface in the flooded field by producing mycelia. Management of rice sheath blight requires an integrated approach based on the knowledge of each stage of the disease and cytomolecular aspects of rice defence responses against R. solani. This review summarizes current knowledge on molecular aspects of R. solani pathogenicity, genetic structure of the pathogen populations, and the rice-R. solani interaction with emphasis on cellular and molecular defence components such as signal transduction pathways, various plant hormones, host defence genes and production of defence-related proteins involved in basal and induced resistance in rice against sheath blight disease.

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Heterogeneity in electrophoretic karyotype within and between anastomosis groups of Rhizoctonia solani

Cited by 47 publications

References 25 publications

The arbuscular mycorrhizal fungus Glomus intraradices is haploid and has a small genome size in the lower limit of eukaryotes

The arbuscular mycorrhizal fungus Glomus intraradices is haploid and has a small genome size in the lower limit of eukaryotes

The advancing identification and classification of Rhizoctonia spp. using molecular and biotechnological methods compared with the classical anastomosis grouping

Cytomolecular aspects of rice sheath blight caused by Rhizoctonia solani

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