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Impact of Introduction of Arbuscular Mycorrhizal Fungi on the Root Microbial Community in Agricultural Fields

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Title: Impact of Introduction of Arbuscular Mycorrhizal Fungi on the Root Microbial Community in Agricultural Fields
Authors: Akyol, Turgut Yigit Browse this author
Niwa, Rieko Browse this author
Hirakawa, Hideki Browse this author
Maruyama, Hayato Browse this author →KAKEN DB
Sato, Takumi Browse this author
Suzuki, Takae Browse this author
Fukunaga, Ayako Browse this author
Sato, Takashi Browse this author
Yoshida, Shigenobu Browse this author
Tawaraya, Keitaro Browse this author
Saito, Masanori Browse this author
Ezawa, Tatsuhiro Browse this author →KAKEN DB
Sato, Shusei Browse this author
Issue Date: 2019
Publisher: Japanese Society of Microbial Ecology
Journal Title: Microbes and Environments
Volume: 34
Issue: 1
Start Page: 23
End Page: 32
Publisher DOI: 10.1264/jsme2.ME18109
Abstract: Arbuscular mycorrhizal (AM) fungi are important members of the root microbiome and may be used as biofertilizers for sustainable agriculture. To elucidate the impact of AM fungal inoculation on indigenous root microbial communities, we used high-throughput sequencing and an analytical pipeline providing fixed operational taxonomic units (OTUs) as an output to investigate the bacterial and fungal communities of roots treated with a commercial AM fungal inoculum in six agricultural fields. AM fungal inoculation significantly influenced the root microbial community structure in all fields. Inoculation changed the abundance of indigenous AM fungi and other fungal members in a field-dependent manner. Inoculation consistently enriched several bacterial OTUs by changing the abundance of indigenous bacteria and introducing new bacteria. Some inoculum-associated bacteria closely interacted with the introduced AM fungi, some of which belonged to the genera Burkholderia, Cellulomonas, Microbacterium, Sphingomonas, and Streptomyces and may be candidate mycorrhizospheric bacteria that contribute to the establishment and/or function of the introduced AM fungi. Inoculated AM fungi also co-occurred with several indigenous bacteria with putative beneficial traits, suggesting that inoculated AM fungi may recruit specific taxa to confer better plant performance. The bacterial families Methylobacteriaceae, Acetobacteraceae, Armatimonadaceae, and Alicyclobacillaceae were consistently reduced by the inoculation, possibly due to changes in the host plant status caused by the inoculum. To the best of our knowledge, this is the first large-scale study to investigate interactions between AM fungal inoculation and indigenous root microbial communities in agricultural fields.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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