allopolyploid; homeolog gene; transcriptomics; next generation sequencer
Kubo Ken-ichi, Paape Timothy, Hatakeyama Masaomi, Entani Tetsuyuki, Takara Akie, Kajihara Kie, Tsukahara Mai, Shimizu-Inatsugi Rie, Shimizu Kentaro K, Takayama Seiji (2015), Gene duplication and genetic exchange drive the evolution of S-RNase-based self-incompatibility in Petunia., in Nature Plants
, 1(14005), 1-9.
Akama Satoru, Shimizu-Inatsugi Rie, Shimizu Kentaro K., Sese Jun (2014), Genome-wide quantification of homeolog expression ratio revealed nonstochastic gene regulation in synthetic allopolyploid Arabidopsis, in NUCLEIC ACIDS RESEARCH
, 42(6), 46.
Shimizu-Inatsugi Rie, Shimizu Kentaro K (2014), Speciation after the 20th century: adaptation to new environments by genome duplications., in Cell Technology (Saiboukougaku)
, 33(8), 878-883.
Mandakova Terezie, Kovarik Ales, Zozomova-Lihova Judita, Shimizu-Inatsugi Rie, Shimizu Kentaro K., Mummenhoff Klaus, Marhold Karol, Lysak Martin A. (2013), The More the Merrier: Recent Hybridization and Polyploidy in Cardamine, in PLANT CELL
, 25(9), 3280-3295.
Shimizu-Inatsugi Rie Shimizu Kentaro K (2012), Chachapter 16: Genome duplication - speciation and ecogenomics of polyploid species., in Morinaga Shinichi Kudoh Hiroshi (ed.), Kyoritsu, Tokyo, Japan, Tokyo, 246-262.
Yamada Megumi, Shimizu-Inatsugi Rie, Shimizu Kentaro K, Sese Jun (2012), Quantified expression levels of genes in allopolyploid species., in IPSJ SIG Technical Reports
, 21, 1-2.
Saito Hideyuki, Sese Jun, Shimizu-Inatsugi Rie, Kamimura Shoko, Yamada Tadayasu, Shimizu Kenta (2011), Development of a microarrray for Fagus crenata (フナの DNA マイクロアレイの開発), in Forest Tree Breeding of Hokkaido
, 54, 11-14.
Takeuchi Yayoi, Salcher Michaela M, Ushio Masayuki, Shimizu-Inatsugi Rie, Kobayashi Masaki J, Diway Bibian, von Mering Christian, Pernthaler Jakob, Shimizu Kentaro K (2011), In situ enzyme activity in the dissolved and particulate fraction of the fluid from four pitcher plant species of the genus Nepenthes., in PloS one
, 6(9), 25144-25144.
Shimizu-Inatsugi Rie, Shimizu Kentaro K (2011), Plant flowering and sexual reproduction during climate change: quantitative prediction by eco-systems biology, in Cell Technology
, 30(2), 167-173.
Genome duplication is a common phenomenon in animals, fungi and plants. However, in spite of the fact that it played an important role in evolutionary history, very little is known about the molecular mechanism to control the doubled genome, and the evolutionary and physiological significance of genome duplication. In this study, I focus on the gene expression control of polyploid plant species, which have wider or different distribution and environmental tolerance compared to their parental species. The analysis of wild species is enabled by taking advantage of two different types of 2nd generation sequencers. I use seven wild species (4 diploids, 2 allopolyploids and 1 autopolyploid) closely related to Arabidopsis thaliana, to exploit its genome information I hypothesize that a combination of two sets of genes could be more adaptive for certain environments. In addition, I hope to find out new functional genes which play important roles for environmental tolerances.