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Title of Journal: Plant Syst Evol

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Abbravation: Plant Systematics and Evolution

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Springer Vienna

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DOI

10.1016/j.bbagen.2013.08.029

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1615-6110

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Genometypespecific variation of the 19th intron

Authors: H Takahashi T Sato YI Sato I Nakamura
Publish Date: 2009/07/22
Volume: 282, Issue: 1-2, Pages: 21-29
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Abstract

Rice PolA1 gene encoding for the largest subunit of RNA polymerase I spans ca 15 kb containing 21 exons and presents as a singlecopyperhaploid genome The genus Oryza comprises 22 wild species and 9 recognized genome types AA BB CC EE FF GG BBCC CCDD and HHJJ We analyzed sequences of the 19th intron PI19 within PolA1 genes in 17 Oryza species The AA species containing two cultivated species showed similar length of PI19 to that of CC species 287–296 bp The longer PI19s were found in BB 502 bp and FF 349 bp species although EE 217 bp and GG 222 bp species had shorter sequences The size differences of the PI19s are particularly useful to discriminate between diploid BB and CC and allotetraploid BBCC species using simple PCR analysis The evolutionary relationship among seven genomes was inferred based on the comparison of their PI19 sequencesWe are grateful to Dr Masahiro Mii Chiba University for his encouragement and helpful advice on the research This work was funded by Sato Project Research Institute of Humanity and Nature Contribution No 13 of Sato Project RIHN Accessions of wildrice species were supplied by Dr Nori Kurata National Bio Resources Project National Institute of Genetics Japan

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