Ribosomal DNA variation and its phylogenetic implication in the genusBrachypodium (Poaceae) |
| |
Authors: | Ying Shi John Draper Clive Stace |
| |
Institution: | (1) Department of Botany, The University of Leicester, University Road, LE1 7RH Leicester, England, U.K. |
| |
Abstract: | The structure of ribosomal DNA ofBrachypodium and several other grass species was investigated using a heterologous rDNA probe from wheat. Several different rDNA families were present among perennial and annual species within the genus. In contrast to the annual species the perennial species exhibited a very low degree of repeat length variation. An extra Eco RI site and a Hin dIII site were observed in the IGS, which distinguishedBrachypodium from other grass genera. The restriction fragment length polymorphism and length variation of the repeat units have taxonomic value withinBrachypodium and are correlated with the classification ofBrachypodium derived from other data. |
| |
Keywords: | Poaceae Brachypodium rDNA repeat units restriction map phylogeny |
本文献已被 SpringerLink 等数据库收录! |