Lineage-specific evolutionary rate in plants: Contributions of a screening for Cereus (Cactaceae).

ABSTRACT: Predictable chloroplast DNA (cpDNA) sequences have been listed for the shallowest taxonomic studies in plants. We investigated whether plastid regions that vary between closely allied species could be applied for intraspecific studies and compared the variation of these plastid segments with two nuclear regions. We screened 16 plastid and two nuclear intronic regions for species of the genus Cereus (Cactaceae) at three hierarchical levels (species from different clades, species of the same clade, and allopatric populations). Ten plastid regions presented interspecific variation, and six of them showed variation at the intraspecific level. The two nuclear regions showed both inter- and intraspecific variation, and in general they showed higher levels of variability in almost all hierarchica

SUBMITTER: Romeiro-Brito M 

PROVIDER: S-EPMC4716776 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature