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Does the novel nodulation regulator function as a device for preventing the symbiotic signal entanglement?

Research Project

Project/Area Number 15H06863
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Plant molecular biology/Plant physiology
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Yamazaki Akihiro  国立研究開発法人理化学研究所, 環境資源科学研究センター, 研究員 (50752953)

Project Period (FY) 2015-08-28 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords分子生物学 / 根粒共生 / 菌根共生 / 相互作用 / シグナル / 植物生理 / 共生 / 根粒形成 / 転写制御 / 植物 / シグナル伝達 / 根粒 / 菌根
Outline of Final Research Achievements

We have identified CAMTA as a novel regulator of nodulation. In this project, we hypothesized that CAMTA functioned as a controller which prevented a crossing of signals between nodulation and mycorrhization and verified this hypothesis through elucidating the mechanism by which CAMTA regulated nodulation.
We determined the genetic hierarchy of CAMTA in the symbiotic signal cascade and found that the CAMTA was genetically functioning in between the symbiotic ion-channel CASTOR and the symbiotic calcium signal-decoder CCaMK. We also found that CAMTA was interacted with the symbiotic transcriptional factor CYCLOPS, which seemed to affect the expression level of the Nodule Inception (NIN) that played a central role in nodulation.
Although, an analysis of the expression level and pattern of NIN during symbioses revealed that our hypothesis was not the case, we characterized the novel nodulation regulator CAMTA and almost elucidated the mechanism how CAMTA regulated nodulation.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • Research Products

    (3 results)

All 2017 2016

All Presentation (2 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Presentation] カルモジュリン結合転写因子による根粒形成制御2017

    • Author(s)
      山崎 明広
    • Organizer
      第58回日本植物生理学会年会
    • Place of Presentation
      鹿児島大学(鹿児島県・鹿児島市)
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] A novel interactor of symbiotic RLKs is involved in nodulation in Lotus japonicus.2016

    • Author(s)
      Akihiro Yamazaki
    • Organizer
      2016 IS-MPMI XVII congress
    • Place of Presentation
      Portland, OR, USA
    • Year and Date
      2016-07-17
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] 共生微生物 生物と密接に関わるミクロな生命体2016

    • Author(s)
      大野博司(編)、山崎明広、征矢野敬、岡本暁、横田圭祐、箱山雅生、林誠
    • Total Pages
      281
    • Publisher
      化学同人
    • Related Report
      2016 Annual Research Report

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Published: 2015-08-26   Modified: 2018-03-22  

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