Panmictic structure of the genetic diversity of apomictic Meloidogyne nematodes (Nematoda: Tylenchida). Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases [Infect Genet Evol] Journal article | | Title | Panmictic structure of the genetic diversity of apomictic Meloidogyne nematodes (Nematoda: Tylenchida). | | Author(s) | Fargette M, Lollier V, Hernandez A, Frutos R | | Institution | IRD, UMR 1062-CBGP, Campus International de Baillarguet, CS30016, 34988 Montferrier-sur-Lez, France. | | Source | Infect Genet Evol 2009 Nov 6. | | Abstract | Species delineation in parthenogenetic tropical species of Meloidogyne nematodes is particularly difficult although they are strictly apomictic. In fact, parthenogenesis in Meloidogyne nematodes is a recent phenomenon and the structure of the genetic diversity is mainly explained by crosses prior to the establishment of parthenogenesis. Under such hypothesis, increasing the size of a characterized sample by adding individuals should result in the decrease of the diversity structure. Twelve individuals from different geographical origins were added to the initial pool of 26 lines characterized in a previous study and an AFLP study was conducted on the whole set of 38 lines. As expected under the panmixy hypothesis, this resulted in a loss of genetic structure. This confirms thus that the genetic structure of tropical parthenogenetic Meloidogyne is due to crosses anterior to the establishment of apomixy. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 19900581 |
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