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Search for paternally expressed imprinted genes regulating endosperm development

Research Project

Project/Area Number 16K14903
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Applied biochemistry
Research InstitutionThe University of Tokyo

Principal Investigator

TAKAYAMA Seiji  東京大学, 大学院農学生命科学研究科(農学部), 教授 (70273836)

Research Collaborator WADA Yuko  奈良先端科学技術大学院大学, バイオサイエンス研究科, 助教 (50379541)
TSUCHIMATSU Takashi  千葉大学, 大学院理学研究院, 准教授 (60740107)
KINOSHITA Tetsu  横浜市立大学, 木原生物学研究所, 教授 (60342630)
ITO Toshiro  奈良先端科学技術大学院大学, バイオサイエンス研究科, 教授 (90517096)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords植物 / 遺伝子 / 発生 / 生殖 / ゲノムインプリンティング / 胚乳
Outline of Final Research Achievements

This project aims to identify paternally expressed imprinted genes that regulate endosperm development. We searched for these genes through the following strategies.
1. Search based on the conflict between maternal and paternal genomes: When Arabidopsis thaliana Col-0 strain was crossed with other natural A. thaliana strains, the obtained F1 seeds exhibited high phenotypic variation in size. A genome-wide association study of seed size identified some associated loci, in which some paternally expressed genes were located.
2. Search based on the gene expression dependent on DNA methylation: The expression of target genes is suggested to be dependent on DNA methylation. The comparative pollen transcriptome analysis of wild type and a DNA methylation mutant identified several candidates genes. Furthermore, the analysis of F1 hybrids between wild type and epiRIL liens identified some loci that affect seed size dependent on DNA methylation.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2017 Other

All Presentation (1 results) Remarks (2 results)

  • [Presentation] 母方インプリント異常による種子崩壊に拮抗的に作用するゲノム領域の探索2017

    • Author(s)
      山口京、和田七夕子、高山誠司、伊藤寿朗
    • Organizer
      2017年度生命科学系学会合同年次大会(ConBio2017)
    • Related Report
      2017 Annual Research Report
  • [Remarks] 東京大学大学院農学生命科学研究科応用生命化学専攻生物有機化学研究室

    • URL

      http://park.itc.u-tokyo.ac.jp/seiyu/

    • Related Report
      2017 Annual Research Report
  • [Remarks] 奈良先端科学技術大学院大学バイオサイエンス研究科細胞間情報学研究室

    • URL

      http://bsw3.naist.jp/takayama/

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2019-03-29  

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