Discovery of novel plastid phenylalanine (trnF) pseudogenes defines a distinctive clade in Solanaceae

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Abstract

Background
The plastome of embryophytes is known for its high degree of conservation in size, structure, gene content and linear order of genes. The duplication of entire tRNA genes or their arrangement in a tandem array composed by multiple pseudogene copies is extremely rare in the plastome. Pseudogene repeats of the trnF gene have rarely been described from the chloroplast genome of angiosperms.

Findings
We report the discovery of duplicated copies of the original phenylalanine (trnFGAA) gene in Solanaceae that are specific to a larger clade within the Solanoideae subfamily. The pseudogenic copies are composed of several highly structured motifs that are partial residues or entire parts of the anticodon, T- and D-domains of the original trnF gene.

Conclusions
The Pseudosolanoid clade consists of 29 genera and includes many economically important plants such as potato, tomato, eggplant and pepper.
Original languageEnglish
JournalSpringerPlus
Volume2
Pages (from-to)459
ISSN2193-1801
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 1181 Ecology, evolutionary biology

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