MOLECULAR POLYMORPHISM AND PHYLOGENETIC RELATIONSHIP IN SOME MELOIDOGYNE SPP - APPLICATION TO TAXONOMY OF MELOIDOGYNE

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  • 1 January 1978
    • journal article
    • research article
    • Vol. 10  (4) , 323-332
Abstract
Proteins and various isozymes were investigated by direct analysis of single specimens to check molecular genetic variability, which is not rare in Meloidogyne spp. in spite of parthenogenetic reproduction. Variability was found in esterases, .alpha.-glycerophosphate, malate dehydrogenases and other proteins. Other loci appear monomorphic in the genus, i.e., catalase. Distinct pools of genes are in a relative accordance with the common described species. Characteristic electrophoretograms are given for M. arenaria, M. javanica, M. incognita, M. hapla and M. naasi and it appears that nonspecific esterases are a useful tool supplementing morphology for specific characterization. Because the biochemical evidence is less subjective than the morphological, it is considered more reliable.