Journal ArticleDOI
Sequence variation of the rDNA ITS regions within and between anastomosis groups in Rhizoctonia solani
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Results suggest that sequence analysis of ITS rDNA regions of R. solani may be a valuable tool for identifying AG subgroups of biological significance.Abstract:
Sequence analysis of the rDNA region containing the internal transcribed spacer (ITS) regions and the 5.8s rDNA coding sequence was used to evaluate the genetic diversity of 45 isolates within and between anastomosis groups (AGs) in Rhizoctonia solani. The 5.8s rDNA sequence was completely conserved across all the AGs examined, whereas the ITS rDNA sequence was found to be highly variable among isolates. The sequence homology in the ITS regions was above 96% for isolates of the same subgroup, 66-100% for isolates of different subgroups within an AG, and 55-96% for isolates of different AGs. In neighbor-joining trees based on distances derived from ITS-5.8s rDNA sequences, subgroups IA, IB and IC within AG-1 and subgroups HG-I and HG-II within AG-4 were placed on statistically significant branches as assessed by bootstrap analysis. These results suggest that sequence analysis of ITS rDNA regions of R. solani may be a valuable tool for identifying AG subgroups of biological significance.read more
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Postharvest dark skin spots in potato tubers are an oversuberization response to Rhizoctonia solani infection.
Yossi Buskila,Leah Tsror,Michal Sharon,Paula Teper-Bamnolker,Orly Holczer-Erlich,Shimon Warshavsky,Idit Ginzberg,Saul Burdman,Dani Eshel +8 more
TL;DR: It is suggested that postharvest dark spot disease is an oversuberization response to R. solani of AG-3 infection that occurs prior to tuber skin set.
Journal ArticleDOI
First Report of AG-A of Binucleate Rhizoctonia in China, Pathogenic to Soya Bean, Pea, Snap Bean and Pak Choy
TL;DR: Results show that Chinese isolates belong to AG-A of BNR, which is the first report onAG-A in China.
Rhizoctonia solani AG-3PT is the major pathogen associated with potato stem canker and black scurf in Colombia
TL;DR: Las pruebas de patogenicidad sobre diferentes plantas, incluida the papa, evidenciaron that the GA-3PT afecta los tallos of las plantas of the familia Solanacea, the principal patogeno asociado with las enfermedades del chancro del tallo y the sarna negra de la papa in Colombia.
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rDNA-based characterization of a new binucleate Rhizoctonia spp. causing root rot on kale in Brazil
TL;DR: The binucleate Rhizoctonia spp.
References
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Journal ArticleDOI
The neighbor-joining method: a new method for reconstructing phylogenetic trees.
Naruya Saitou,Masatoshi Nei +1 more
TL;DR: The neighbor-joining method and Sattath and Tversky's method are shown to be generally better than the other methods for reconstructing phylogenetic trees from evolutionary distance data.
Journal ArticleDOI
A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences.
TL;DR: Some examples were worked out using reported globin sequences to show that synonymous substitutions occur at much higher rates than amino acid-altering substitutions in evolution.
Journal ArticleDOI
Rapid and sensitive protein similarity searches
TL;DR: An algorithm was developed which facilitates the search for similarities between newly determined amino acid sequences and sequences already available in databases and increases sensitivity by giving high scores to those amino acid replacements which occur frequently in evolution.