e-journal

Plastid genome sequences of legumes reveal parallel inversions and multiple losses of rps16 in papilionoids

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To date, publicly available plastid genomes of legumes have for the most part been limited to the
subfamily Papilionoideae. Here we report 13 new plastid genomes of legumes spanning all three subfamilies. The
genomes representing Caesalpinioideae and Mimosoideae are highly conserved in gene content and gene order,
similar to the ancestral angiosperm genome organization. Genomes within the Papilionoideae, however, have
reduced sizes due to deletions in nine intergenic spacers primarily in the large single copy region. Our study also
indicates that rps16 has been independently lost at least five times in legumes, with additional gene and intron losses
scattered among the papilionoids. Additionally, genera from two distinct lineages within the papilionoids, Lupinus
and Robinia, have a parallel inversion of 36 and 39 kb, respectively. This parallel inversion is novel as it appears to be caused by a 29 bp repeat within two trnS genes. This repeat is present in all available legume plastid genomes
indicating that there is the potential for this inversion to be present in more species. This case of a homoplasious
inversion is also evidence that some inversion events may not be reliable phylogenetic markers.

Key words: chloroplast genome, Fabaceae, genomic rearrangement, legumes, parallel inversions, rps16.

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Ketersediaan

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Informasi Detail

Judul Seri

J. Syst. Evol.

No. Panggil

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Penerbit

: Institute of Botany., 2015

Deskripsi Fisik

J. Syst. Evol. 53 (5): 458–468, 2015

Bahasa

English

ISBN/ISSN

doi: 10.1111/jse.121

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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