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2016 Fiscal Year Annual Research Report

イネのリン吸収における根圏域および根圏微生物の影響

Research Project

Project/Area Number 14F04755
Research InstitutionJapan International Research Center for Agricultural Sciences

Principal Investigator

Wissuwa Matthias  国立研究開発法人国際農林水産業研究センター, 生産環境・畜産領域, 主任研究員 (90442722)

Co-Investigator(Kenkyū-buntansha) PUJOL Vincent  国立研究開発法人国際農林水産業研究センター, 生産環境・畜産領域, 外国人特別研究員
Project Period (FY) 2014-04-25 – 2017-03-31
Keywordsaerenchyma / P deficiency / DJ / Nerica4 / biomass accumulation / RNA-Seq
Outline of Annual Research Achievements

Measurements of root porosity suggested that formation of aerenchyma is more rapid under P deficiency and that this is particularly strong for the genotype with higher tolerance to P deficiency. These results were confirmed using more detailed cytological examinations in combination with image analysis tools. The tolerant genotype DJ had a higher proportion of aerenchymatic tissue compared to Nerica4 and this further increased under P deficient conditions. Aerenchyma formation is thus one of the candidate mechanisms that may explain why DJ is generally performing better under low-input conditions, and specifically why it is capable of utilizing P more efficiently in biomass accumulation when P is the limiting factor.
Analysis of gene expression patterns for three gene families known to be involved in aerenchyma formation produced suggestive rather than conclusive data. It identified a few candidate genes differentially expressed in contrasting genotypes. Further studies are needed to follow up on this. A manuscript describing his work on aerenchyma is nearing completion and will be submitted for review soon.
Furthermore, his assistance with the bioinformatics analysis of the RNA-Seq dataset was instrumental in completing the study of Dr. Nanda. This work is now under review.

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

  • Research Products

    (2 results)

All 2017

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 1 results)

  • [Journal Article] Lysigenous aerenchyma development in rice roots under Phosphorus deficiency in two contrasting genotypes.2017

    • Author(s)
      Pujol V and Wissuwa M
    • Journal Title

      - (投稿準備中)

      Volume: - Pages: -

    • DOI

      -

    • Int'l Joint Research
  • [Journal Article] Patterns of stress response and tolerance based on transcriptome profiling of rice crown tissue under Zn deficiency.2017

    • Author(s)
      Nanda AK, Pujol V, Wissuwa M
    • Journal Title

      Journal of Experimental Botany (審査中)

      Volume: - Pages: -

    • DOI

      -

    • Peer Reviewed / Int'l Joint Research

URL: 

Published: 2018-01-16  

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