Metagenomic microbial community composition and its relation to biogeochemical carbon cycling in no-tilled upland soils

2016 Fiscal Year Final Research Report

• Project/Area Number: 26310302
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 特設分野
• Research Field: Food Cycle Research
• Research Institution: Ibaraki University
• Principal Investigator: Ohta Hiroyuki 茨城大学, 農学部, 教授 (80168947)
• Co-Investigator(Kenkyū-buntansha): 西脇 淳子 茨城大学, 農学部, 助教 (00549892) ; 小松崎 将一 茨城大学, 農学部, 教授 (10205510) ; 西澤 智康 茨城大学, 農学部, 准教授 (40722111)
• Co-Investigator(Renkei-kenkyūsha): HATTORI MASAHIRA 東京大学, 新領域創成科学研究科, 教授 (70175537) ; KANEKO NOBUHIRO 横浜国立大学, 環境情報研究科, 教授 (30183271) ; NIIMI HIROSHI (独)農業・食品産業技術総合研究機構, 九州沖縄農業研究センター, 主任研究員 (70414828)
• Research Collaborator: HASHIMOTO TOMOYOSHI (独)農業・食品産業技術総合研究機構, 室長 ; Hashimi Rahmatullah 茨城大学, 大学院農学研究科 ; SHIZUKUDA MAI 茨城大学, 大学院農学研究科 ; NAKANE MASAMI 茨城大学, 大学院農学研究科
• Project Period (FY): 2014-07-18 – 2017-03-31
• Keywords: 不耕起栽培 / 土壌団粒 / 微生物群集 / 炭素隔離 / 温室効果ガス / 気候変動 / メタシークエンス

Outline of Final Research Achievements

The outcome of this research was to reveal the impact of no tillage vs. conventional tillage systems on soil biological properties, aggregate stability, and carbon sequestration function. Particularly, this research showed that comparing with the tillage system, no tillage management increased the soil biomass of earthworms and fungi, altered soil fungal and bacterial community structures, increased soil bacterial diversity, and induced the formation of microhabitats for specific bacterial groups such as members of the phylum Acidobacteria within soil aggregates. These findings will contribute to a better understanding of relationships between soil microbes’ microhabitats and carbon cycle in agriculture ecosystem and further represent environmental merits of non-tillage farming, comparing with the conventional tillage cultivation.

Free Research Field

環境毒性化学