دورية أكاديمية
High levels of gene flow and heterozygote excess characterize Rhizoctonia solani AG-1 IA (Thanatephorus cucumeris) from Texas.
| العنوان: | High levels of gene flow and heterozygote excess characterize Rhizoctonia solani AG-1 IA (Thanatephorus cucumeris) from Texas. |
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| المؤلفون: | Rosewich UL; USDA-ARS2, University of Minnesota, St. Paul, Minnesota 55108, USA., Pettway RE, McDonald BA, Kistler HC |
| المصدر: | Fungal genetics and biology : FG & B [Fungal Genet Biol] 1999 Dec; Vol. 28 (3), pp. 148-59. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Academic Press Country of Publication: United States NLM ID: 9607601 Publication Model: Print Cited Medium: Print ISSN: 1087-1845 (Print) Linking ISSN: 10871845 NLM ISO Abbreviation: Fungal Genet Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Orlando, FL : Academic Press, c1996- |
| مواضيع طبية MeSH: | Genes, Fungal*, Oryza/*microbiology , Rhizoctonia/*genetics , Rhizoctonia/*physiology, Blotting, Southern ; DNA Probes ; Genetics, Population ; Genotype ; Heterozygote ; Polymorphism, Restriction Fragment Length ; Recombination, Genetic ; Texas |
| مستخلص: | To date, much of the genetics of the basidiomycete Thanatephorus cucumeris (anamorph = Rhizoctonia solani) remains unknown. Here, we present a population genetics study using codominant markers to augment laboratory analyses. Seven single-copy nuclear RFLP markers were used to examine 182 isolates of Rhizoctonia solani AG-1 IA collected from six commercial rice fields in Texas. Thirty-six multilocus RFLP genotypes were identified. Population subdivision analyses indicated a high degree of gene flow/migration between the six geographic populations. Tests for Hardy-Weinberg equilibrium (HWE) among the 36 multilocus RFLP genotypes revealed that four of the seven loci did not significantly differ from HWE. Subsequent analysis demonstrated that departures from HWE at the three remaining loci were due to an excess of heterozygotes. Data presented here suggest that R. solani AG-1 IA is actively outbreeding (heterothallic). Possible explanations for heterozygote excess, which was observed at all seven RFLP loci, are discussed. (Copyright 1999 Academic Press.) |
| المشرفين على المادة: | 0 (DNA Probes) |
| تواريخ الأحداث: | Date Created: 20000212 Date Completed: 20000510 Latest Revision: 20151119 |
| رمز التحديث: | 20240627 |
| DOI: | 10.1006/fgbi.1999.1174 |
| PMID: | 10669581 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1087-1845 |
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| DOI: | 10.1006/fgbi.1999.1174 |