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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
Host Researcher 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)
Foreign Research Fellow 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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