Molecular phylogeny of Linaria (Plantaginaceae) based on nuclear ribosomal (ITS) sequences
Subject Areas : Developmental biology of plants and animals , development and differentiation in microorganisms
1 - Islamic Azad University, Hamedan branch
Keywords: Linaria, Nuttallanthus, : Plantaginaceae, nr DNA ITS,
Abstract :
Linaria Mill.with 150 spp. constitutes the largest genus of the tribe Antirrhineae. This genus clearly has the main challenges in the normal classification and so needs to more serious and complete research. The goal of this research is trying to solve existing problem using molecular systematic tool. In this research, a phylogenetic analysis of representatives from Linaria has been presented based on nuclear ribosomal (ITS) sequences. From Maximum Parsimony and Bayesian analyses nearly congruent trees are produced. Our results indicate that Linaria-Nuttallanthus is monophyletic group and comprising of seven sections of Pelisserianae, Lectoplectron, Macrocentrum, Versicolores, Supinae, Diffusae and Linaria. Linaria is expanded to include sect. Speciosae and some members of sect. Diffusae. It is necessary to propose a new concept for sect. Diffusae by restricting it only to those annual species with wingless seeds that are covered by testa cells with slightly elevated to sunken anticlinal walls plus convex periclinal walls papillate on surface.
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