Abstract
Apiaceae belong to angiosperm families with frequent plastome structural rearrangements, some of which are generally regarded as synapomorphic for large clades, although typically with limited taxon sampling. Our study aims to improve understanding of the structural rearrangements in plastome within the Tordylieae tribe (ApiaceaeApioideae) with a dense sampling scheme of its species. We showed that presence of psbA pseudogene in inverted repeats near the border with a large single-copy region, which is found in the Tordylieae tribe, may be a clade-specific synapomorphy.
Highlights
Apiaceae are one of the largest and most economically important families of angiosperms
It has been repeatedly stipulated that structural reorganizations in plastid genomes such as the change of gene order, small deletions and duplications in non-coding regions, losses and additions of whole genes or their separate parts, can serve as phylogenetic markers in addition to the results obtained from the analysis of nucleotide substitutions [2,3,4]
Instability in the plastid genome is often associated with the junctions between inverted repeats (IR) and single-copy regions
Summary
Apiaceae are one of the largest and most economically important families of angiosperms. It has been repeatedly stipulated that structural reorganizations in plastid genomes such as the change of gene order, small deletions and duplications in non-coding regions, losses and additions of whole genes or their separate parts, can serve as phylogenetic markers in addition to the results obtained from the analysis of nucleotide substitutions [2,3,4]. Apiaceae plastomes appear to be unusual in angiosperm families due to the frequency and large size of IR junction shifts [5,6].
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