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Effect of predatory protists on root endophytes and rice plant growth

Research Project

Project/Area Number 22K14804
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38010:Plant nutrition and soil science-related
Research InstitutionNiigata University

Principal Investigator

アシルオグル ムハンメットラシット  新潟大学, 自然科学系, 助教 (30870456)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsProtists / Plant-microbe / microbial ecology / paddy field / predators / protists / prey-predator / plant growth / trophic interaction / protozoa / 原生生物 / 根内生細菌 / イネ / 捕食性原生生物
Outline of Research at the Start

捕食性原生生物(以下、原生生物)は細菌を捕食して細菌群集を変化させ、土壌中の栄養循環を促進し、植物の成長を促進する。これまでの研究では、原生生物と根圏細菌の相互作用(群集構造や機能性の変化)にのみ焦点があてられていた。しかし我々の最近の研究で、原生生物の存在下においては植物根の内生細菌の群集組成もが変化し、コロニー形成が促進されることが確認された。本研究では、原生生物の存在がどうして根内生細菌の個体数を増加させるのかを明らかにすることを第一の目的とし、原生生物による制御によって根内生細菌の機能性、特に植物成長促進効果にどの程度影響を与えるのかを調べることを第二の目的とする。

Outline of Annual Research Achievements

The main part of the project in which we focused on the effects of protists on the root endophytic bacterial communities is completed and the manuscript is submitted to a scientific journal. We showed that microbial predators modulated endophytic communities, which originated in the rhizosphere soil. The modulation of endophytes followed chaotic patterns triggered by changes in the dilution rates of the soil nutrients. Furthermore, the presence of predators enhanced the root colonization of endophytes. Our findings identify a novel key mechanism for the modulation of endophytes and enhance understanding of underground plant-microbe interaction.In addition, our side studies that related to this project produced 4 articles in top journals of soil science.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

We have achieved the majority of our aims in this project so far and majority of the work is done. Everything went smoothly and the article including our major goal is currently submitted to a scientific journal.

Strategy for Future Research Activity

Although the major part is completed, we still need to make some confirmative experiments. So in the last year of the project we will complete the experiments and finalize the project.

Report

(2 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (19 results)

All 2024 2023 2022

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results)

  • [Journal Article] Nitrogen-based fertilizers differentially affect protist community composition in paddy field soils2024

    • Author(s)
      Seda Ozer Bodur, Solomon Oloruntoba Samuel, Kazuki Suzuki, Naoki Harada, Rasit Asiloglu
    • Journal Title

      Soil Ecology Letters

      Volume: 6 Issue: 3 Pages: 230221-230221

    • DOI

      10.1007/s42832-023-0221-3

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predatory Protists: The Key Players in the Quest for Sustainable Agricultural Practices2024

    • Author(s)
      Seda Ozer Bodur,Mayu Fujino,Rasit Asiloglu
    • Journal Title

      Journal of Agricultural Sciences

      Volume: Accepted

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Protists: the hidden ecosystem players in a wetland rice field soil2023

    • Author(s)
      Murase Jun, Asiloglu Rasit
    • Journal Title

      Biology and Fertility of Soils

      Volume: - Issue: 6 Pages: 255-255

    • DOI

      10.1007/s00374-023-01705-9

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Protists modulate active bacterial community composition in paddy field soils2023

    • Author(s)
      Mayu Fujino, Kazuki Suzuki, Naoki Harada, Rasit Asiloglu
    • Journal Title

      Biology and Fertility of Soils

      Volume: 59 Issue: 7 Pages: 709-721

    • DOI

      10.1007/s00374-023-01733-5

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Rice endophytic communities are strongly dependent on microbial communities specific to each soil2023

    • Author(s)
      Samuel, S.O., Suzuki, K., Asiloglu, R, Harada N
    • Journal Title

      Biology and Fertility of Soils

      Volume: - Issue: 7 Pages: 733-746

    • DOI

      10.1007/s00374-023-01743-3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Biochar - microbe interaction: more protist research is needed2022

    • Author(s)
      Asiloglu R
    • Journal Title

      Biochar

      Volume: 4 Issue: 1 Pages: 72-72

    • DOI

      10.1007/s42773-022-00195-6

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Microbial trophic interactions are influenced by organic fertilizers in sugarcane fields2024

    • Author(s)
      Fujino Mayu, Ishizuka Haruka, Kazama Shiori, Ikazaki Kenta, Arai Miwa, Harada Naoki, Asiloglu Rasit
    • Organizer
      KAAB International Symposium 2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bodur Seda Ozer, Asiloglu Rasit, Suzuki Kazuki, Harada Naoki2024

    • Author(s)
      Nutrients Drive Soil Bacterial Population and Predatory Protists Shape Diversity
    • Organizer
      KAAB International Symposium 2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Rhizosphere protists regulate root endophytic communities with chaotic dynamics2024

    • Author(s)
      Asiloglu Rasit, Bodur Seda Ozer, Samuel Oloruntoba Solomon, Aycan Murat, Murase Jun, Harada Naoki
    • Organizer
      KAAB International Symposium 2024
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] 水田土壌における原生生物の生態と機能に関する研究2024

    • Author(s)
      Asiloglu Rasit
    • Organizer
      日本土壌肥料学会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] Effect of soil salinity on protist community composition in paddy field soils2024

    • Author(s)
      BODUR Ozer Seda, SAMUEL Oloruntoba Solomon, POLAT Muhammet Fatih, AYCAN Murat, MITSUI Toshiaki, HARADA Naoki, ASILOGLU Rasit
    • Organizer
      日本土壌肥料学会
    • Related Report
      2023 Research-status Report
  • [Presentation] サトウキビ畑での微生物栄養相互作用に与える有機質肥料の影響2024

    • Author(s)
      藤野まゆ, 石塚晴佳, 風間栞, 伊ヶ崎健大, 荒井見和, 岩崎真也, 原田直樹, Asiloglu Rasit
    • Organizer
      日本土壌肥料学会
    • Related Report
      2023 Research-status Report
  • [Presentation] 原生生物の捕食作用に対する異なる細菌群集の反応2024

    • Author(s)
      久野颯斗、伊ヶ崎健大, 荒井見和, 原田直樹, Asiloglu Rasit
    • Organizer
      日本土壌肥料学会
    • Related Report
      2023 Research-status Report
  • [Presentation] Predatory protists regulate endophytic communities of rice roots2024

    • Author(s)
      Asiloglu Rasit, Bodur Seda Ozer, Samuel Oloruntoba Solomon, Aycan Murat, Murase Jun, Harada Naoki
    • Organizer
      日本土壌微生物学会
    • Related Report
      2023 Research-status Report
  • [Presentation] Top-down predators shape soil bacterial community composition, while bottom-up nutrients drive bacterial abundance2024

    • Author(s)
      Bodur Seda Ozer, Suzuki Kazuki, Harada Naoki, Asiloglu Rasit,
    • Organizer
      日本土壌微生物学会
    • Related Report
      2023 Research-status Report
  • [Presentation] Applied protistology: a pioneering approach in ecologically friendly rice production2023

    • Author(s)
      R. ASILOGLU
    • Organizer
      KAAB International Symposium 2023
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of nitrogen fertilizers on top-down predatory protist in paddy field soils2023

    • Author(s)
      S. B. OZER, R. ASILOGLU, S. O. SAMUEL, K. SUZUKI, N. HARADA
    • Organizer
      KAAB International Symposium 2023
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of nitrogen fertilizers on top-down predatory protist in paddy field soils.2023

    • Author(s)
      Bodur Ozer Seda, Asiloglu Rasit, Suzuki Kazuki, Harada Naoki
    • Organizer
      KAAB International Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Applied protistology: A pioneering approach in ecologically friendly rice production.2023

    • Author(s)
      Asiloglu Rasit,
    • Organizer
      KAAB International Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2024-12-25  

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