Determination of genetic diversity among Indian isolates of Rhizoctonia bataticola causing dry root rot of chickpea

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ID: 119323
2009
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Abstract
Genetic diversity among 27 isolates (23 from chickpea and 4 from other host crops) of Rhizoctonia bataticola representing 11 different states of India was determined by random amplified polymorphic DNA (RAPD), internal transcribed spacer restriction fragment length polymorphism (ITS-RFLP) and ITS sequencing. The isolates showed variability in virulence test. Unweighted paired group method with arithmetic average cluster analysis was used to group the isolates into distinct clusters. The clusters generated by RAPD grouped all the isolates into six categories at 40% genetic similarity. High level of diversity was observed among the isolates of different as well as same state. Some of the RAPD (OPN 4, OPN 12, and OPN 20) markers clearly distinguished majority of the isolates into the area specific groups. The ITS I, 5.8rDNA and ITS II regions of 11 isolates representing different RAPD groups were amplified with primers ITS 1 and ITS 4 and digested with seven restriction enzymes. The restriction enzymes DraI, MboI, RsaI, and AluI were found to be suitable for differentiating the isolates into five categories by showing isolate specific ITS-RFLP patterns. The isolates were variable in their nucleotide sequences of the ITS regions. This is the first study on genetic diversity among chickpea isolates of R. bataticola.
Reference Key
aghakhani2009antoniedetermination Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Maryam Aghakhani;Sunil C. Dubey;Maryam Aghakhani;Sunil C. Dubey;
Journal antonie van leeuwenhoek
Year 2009
DOI
doi:10.1007/s10482-009-9375-y
URL
https://link.springer.com/article/10.1007/s10482-009-9375-y
Keywords
Microbiology plant sciences medical microbiology soil science & conservation

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