Analysis of dosage compensation in rice autopolyploids

2013 Fiscal Year Final Research Report

• Project/Area Number: 24658003
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Breeding science
• Research Institution: The University of Tokyo
• Principal Investigator: ITOH Jun-ichi 東京大学, 農学生命科学研究科, 准教授 (30345186)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: 倍数体

Research Abstract

Autopolyploids series (diploid, triploid and tetraploid) in rice were artificially created by a colchicine treatment and a genetic crossing. Comparisons between diploid and tetraploid plants revealed that the effect of genome doubling on the rice morphology depends on the developmental stage and traits. It was also suggested the cell size and expression level of some epigenetic related genes in the tetraploids were increased.

Research Products

• [Journal Article] Rice SLENDER LEAF 1 gene encodes cellulose synthase-like D4 and is specifically expressed in M-phase cells to regulate cell proliferation (2013)
  • Author(s): Yoshikawa T, Eiguchi M, Hibara KI, Ito JI, Nagato Y.
  • Journal Title: J Exp Bot Volume: 64 Pages: 2049-2061
  • DOI: 10.1093/jxb/ert060
  • Peer Reviewed
• [Journal Article] Rice DECUSSATE controls phyllotaxy by affecting the cytokinin signaling pathway (2012)
  • Author(s): Itoh, JI., Hibara, K., Kojima, M., Sakakibara, H., and Y. Nagato.
  • Journal Title: Plant J Volume: 72 Pages: 869-881
  • DOI: 10.1111/j.1365-313x.2012.05123.x
  • Peer Reviewed
• [Journal Article] Role of transposon-derived small RNAs in the interplay between genomes and parasitic DNA in rice (2012)
  • Author(s): Nosaka, M., Itoh, J.-I., Nagato, Y., Ono, A., Isiwata, A. and Sato, Y.
  • Journal Title: Plos Genet Volume: 8 Pages: e1002953
  • DOI: 10.1371/journal.pgen.1002953
  • Peer Reviewed
• [Journal Article] Rice PLASTOCHRON genes regulate leaf maturation downstream of the gibberellin signal transduction pathway (2012)
  • Author(s): Mimura M, Nagato Y, Itoh J.
  • Journal Title: Planta Volume: 235 Pages: 1081-9
  • DOI: 10.1007/s00425-012-1639-5
  • Peer Reviewed
• [Presentation] イネの葉間期制御に関わる遺伝子の遺伝的相互作用 (2014)
  • Author(s): 三村真生、長戸康郎、伊藤純一
  • Organizer: 日本育種学会第125回講演会
  • Place of Presentation: 東北大学
  • Year and Date: 20140321-22
• [Presentation] Rice PLASTOCHRON genes regulate organ size and act downstream of the gibberellin signaling pathway (2013)
  • Author(s): M.Mimura, Y. Nagato, J. Itoh.
  • Organizer: 7th International Rice Genetics Symposium
  • Place of Presentation: Manila, Philippines
  • Year and Date: 20131105-08
• [Presentation] イネの葉間期制御におけるPLASTOCHRON遺伝子とOsSPL遺伝子との関係 (2013)
  • Author(s): 三村真生、Luo Le、経塚淳子、長戸康郎、伊藤純一
  • Organizer: 日本育種学会第123回講演会
  • Place of Presentation: 東京農業大学
  • Year and Date: 20130327-28