Proliferation of group II introns in the chloroplast genome of the green alga Oedocladium carolinianum (Chlorophyceae).

ABSTRACT:

Background

The chloroplast genome sustained extensive changes in architecture during the evolution of the Chlorophyceae, a morphologically and ecologically diverse class of green algae belonging to the Chlorophyta; however, the forces driving these changes are poorly understood. The five orders recognized in the Chlorophyceae form two major clades: the CS clade consisting of the Chlamydomonadales and Sphaeropleales, and the OCC clade consisting of the Oedogoniales, Chaetophorales, and Chaetopeltidales. In the OCC clade, considerable variations in chloroplast DNA (cpDNA) structure, size, gene order, and intron content have been observed. The large inverted repeat (IR), an ancestral feature characteristic of most green plants, is present in Oedogonium cardiacum (Oedogoniales)

SUBMITTER: Brouard JS 

PROVIDER: S-EPMC5088586 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature