Anastomosis Groups of Potato Isolates of Rhizoctonia solani in India

Suresh, K.; Mall, Sudha

doi:10.2307/3792905

Cited by 2 publications

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“…of Rhizoctonia solani Kuhn into groups on the basis of hyphal anastomosis, proposed by Parmeter et al 16) and Ogoshi14), has become widely accepted3, 9,12,13,20,21). This fungus is now divided into nine anastomosis groups (AGs).…”

Section: Classificationmentioning

confidence: 99%

DNA base sequence homology in Rhizoctonia solani Kuehn III. Genetic relatedness within AG-3,AG-5,AG-7 and AG-BI.

Kuninaga

Yokosawa

1983

Jpn. J. Phytopathol.

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DNA base sequence homology among isolates within each anastomosis group of Rhizoctonia solani, AG-3, AG-5, AG-7 and AG-BI, was investigated on the basis of DNA-DNA reassociation kinetics to examine their genetic relatedness. DNA homology value of isolates within each anastomosis group ranged from 97.6 to 100% with AG-3 (potato type, IV), from 94.0 to 98.2% with AG-5, from 95.6 to 98.8% with AG-7, and from 91.4 to 100.2% with AG-BI. These results suggested that each of these anastomosis groups is genetically homogenous.

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Section: Classificationmentioning

confidence: 99%

DNA base sequence homology in Rhizoctonia solani Kuehn III. Genetic relatedness within AG-3,AG-5,AG-7 and AG-BI.

Kuninaga

Yokosawa

1983

Jpn. J. Phytopathol.

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Differentiation of Three Homogeneous Groups of Rhizoctonia solani Anastomosis Group 4 by Analysis of Fatty Acids

Johnk¹,

Jones²

2001

Phytopathology®

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Profiles of fatty acids from 70 isolates of Rhizoctonia solani anastomosis group (AG)-4 clustered into three groups, corresponding to homogeneous group (HG)-I, HG-II, and a newly described HG-III. Isolates from Georgia peanuts exhibiting limb rot were characterized as gas chromatography (GC) subgroup 1 (GC-1) and contained HG-I isolates. Isolates from diseased soybean hypocotyls grown in North Dakota and sugar beet seedlings, taproots, and tare soil in Minnesota and North Dakota were characterized as GC subgroup 2 (GC-2) and contained predominantly HG-II isolates but also included three distinct isolates based on fatty acid methyl ester (FAME) analysis and morphological features. Selected isolates from North Carolina cucumbers clustered into three distinct groups that corresponded to HG-I, HG-II, and the newly described HG-III. Distinct isolates from the soybean and sugar beet populations clustered with HG-III. Fatty acid profiles of AG-4 were compared with FAME library profiles of AG-1, AG-2 type 2, and AG-3, which were developed in previous studies and were sufficiently different that they could be used to support speciation of this group from R. solani. It is suggested that binomial R. practicola may be appropriate for the portion of AG-4 identified as HG-II.

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Anastomosis Groups of Potato Isolates of Rhizoctonia solani in India

Cited by 2 publications

References 0 publications

DNA base sequence homology in Rhizoctonia solani Kuehn III. Genetic relatedness within AG-3,AG-5,AG-7 and AG-BI.

DNA base sequence homology in Rhizoctonia solani Kuehn III. Genetic relatedness within AG-3,AG-5,AG-7 and AG-BI.

Differentiation of Three Homogeneous Groups of Rhizoctonia solani Anastomosis Group 4 by Analysis of Fatty Acids

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