Glomalin accumulation and arbuscular mycorrhizal symbiosis of grassland

• Project/Area Number: 26304046
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Tottori University
• Principal Investigator: Yamanaka Norikazu 鳥取大学, 乾燥地研究センター, 教授 (20202385)
• Co-Investigator(Kenkyū-buntansha): 大和 政秀 千葉大学, 教育学部, 准教授 (00571788) ; 谷口 武士 鳥取大学, 乾燥地研究センター, 准教授 (10524275)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000); Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2016: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
• Keywords: 環境 / 菌根 / 生態学 / 黄砂対策

Outline of Final Research Achievements

Mycorrhizal symbiosis and accumulation of glomalin in Mongolian grassland were characterized under gradients of grazing intensity at three study sites of different aridity. With regard to floristic composition, grazing decreased the shoot biomass of Poaceae species, especially Stipa spp. Distinctness of the AM fungal communities was observed among the three study sites, but most of the AM fungal operational taxonomic units (OTUs) were ubiquitous. This result indicates that the AM fungal communities may be derived from similar AM fungal floras in correspondence with environmental factors. The composition of AM fungal communities differed significantly among the grazing intensities at all study sites. The relative abundance of the most dominant AM fungal OTU in the LG plots decreased with increase in grazing intensity at all study sites, and grazing may disturb the AM fungal community structure. Then, it was shown that this may affect glomalin accumulation.

Research Products

• [Int'l Joint Research] モンゴル生命科学大学(モンゴル)
• [Int'l Joint Research] モンゴル生命科学大学(モンゴル)
• [Int'l Joint Research] モンゴル生命科学大学(モンゴル)
• [Journal Article] 鳥取砂丘における海浜植物5種のアーバスキュラー菌根共生とグロマリン様タンパク質蓄積 (2015)
  • Author(s): 由澤敏樹･山中典和・谷口武士
  • Journal Title: 日本緑化工学会誌 Volume: 41 Pages: 27-32
  • NAID: 130005147591
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 降水量と家畜食害強度の違いがモンゴル草原のアーバスキュラー菌根菌群集に与える影響 (2017)
  • Author(s): 日下部亮太、谷口武士、Jamsran Undarmaa、山中典和、Goomaral Altansuk, 大和政秀
  • Organizer: 第64回日本生態学会大会
  • Place of Presentation: 東京
  • Year and Date: 2017-03-15
• [Presentation] モンゴルのステップ草原における家畜食害はアーバスキュラー菌根菌群集に影響を与える (2016)
  • Author(s): 日下部亮太、谷口武士、Jamsran Undarmaa、山中典和、大和政秀
  • Organizer: 第63回日本生態学会大会
  • Place of Presentation: 仙台市
  • Year and Date: 2016-03-22
• [Presentation] モンゴルのステップ草原における家畜食害がアーバスキュラー菌根菌群集に与える影響 (2015)
  • Author(s): 日下部亮太、谷口武士、Jamsran Undarmaa、山中典和、大和政秀
  • Organizer: 菌根研究会2015年度大会
  • Place of Presentation: 帯広市
  • Year and Date: 2015-10-31
• [Book] Rangeland Ecosystems of Mongolia (2018)
  • Author(s): Undarmaa Jamsran, Kenji Tamura, Natsagdorj Luvsan and Norikazu Yamanaka eds
  • Total Pages: 528
  • Publisher: Munkhiin Useg Co. ltd., Ulaanbaatar, Mongolia
  • ISBN: 9789997825674