Abstract:
A DNA probe for early diagnosing black line dwarf disease virus (I) is prepd. by (a) separating the (I) from a green leafhopper larva infected with the (I), (b) preparing cDNA library of the (I), (c) ligating the obtd. cDNA with rambda gtll vector to obtain the recombinant rambda gtll phage DNA (II), (d) inserting the obtd. (II) into pUC19 and transforming into E. coli JM101, and (e) collecting the recombinant clone. The obtd. DNA probe is useful for the early diagnosis of a green leafhopper larba infected with the (I).
Abstract:
This invention is described about the method for discriminating of variety and quality of korean native cattle by the analysis of the difference of characteristic of DNA pleomorphism. Thus, DNA fragment which contains all or any one of base sequance AAGGTCCTAGGGTCCTGGG or eqivalent to this sequance by PCR reaction consists of DNA denaturing process, primer attaching process, DNA synthetic process contacts DNA of cattle at below 41 deg.C for 30-100 sec by using primer or probe, electrophoresis and detects to discriminate korean native cattle between holstein, hairford and aengus.