Abstract
RLGS is a technique to detect DNA polymorphism using restriction sites as landmarks. It identifies the landmarks through direct end-labeling, two-dimensional electrophoresis and autoradiography, giving a profile with many spots to allow the scanning of numerous DNA loci. We successfully performed the technique on fungi using isolates ofColletotrichum acutatum andC. gloeosporioides in anamorphic Ascomycotina,Rhizopus oryzae in Zygomycotina,Phytophthora nicotianae in Mastigomycotina (or Oomycota) andRhizoctonia solani in anamorphic basidiomycotina. RLGS of total genomic DNA digested with three restriction enzymes,Not, I,EcoR V andMbo I, reproducibly gave specific profiles of ca. 400 to 1.600 spots for each isolate. A polymorphic spot appearing to reflect a genetic difference between the twoColletotrichum species was found in the profiles of the isolates. No other common spots were found in any combination of isolates of the twoColletotrichum species, and thus the other spots on the profiles were regarded as unique to each isolate. These results indicated that RLGS could be applied, as a powerful fingerprinting technique based on genetic information from the whole genomic DNA, to search for useful DNA markers for taxonomic and genomic studies on many fungal species.
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Tomioka, K., Sato, T. Restriction landmark genomic scanning (RLGS) in fungi. Mycoscience 42, 295–299 (2001). https://doi.org/10.1007/BF02463922
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DOI: https://doi.org/10.1007/BF02463922