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
| Project/Area Number |
14F04755
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| Research Institution | Japan International Research Center for Agricultural Sciences |
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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)
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| 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
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| Project Period (FY) |
2014-04-25 – 2017-03-31
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| Keywords | aerenchyma / P deficiency / DJ / Nerica4 / biomass accumulation / RNA-Seq |
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| 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.
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| Research Progress Status |
28年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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