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Dissection of niche competition between introduced and indigenous arbuscular mycorrhizal fungi with respect to soybean yield responses
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| Title: | Dissection of niche competition between introduced and indigenous arbuscular mycorrhizal fungi with respect to soybean yield responses |
| Authors: | Niwa, Rieko Browse this author | | Koyama, Takuya Browse this author | | Sato, Takumi Browse this author | | Adachi, Katsuki Browse this author | | Tawaraya, Keitaro Browse this author | | Sato, Shusei Browse this author | | Hirakawa, Hideki Browse this author | | Yoshida, Shigenobu Browse this author | | Ezawa, Tatsuhiro Browse this author →KAKEN DB |
| Issue Date: | 9-May-2018 |
| Publisher: | Nature Publishing Group |
| Journal Title: | Scientific reports |
| Volume: | 8 |
| Start Page: | 7419 |
| Publisher DOI: | 10.1038/s41598-018-25701-4 |
| Abstract: | Arbuscular mycorrhizal (AM) fungi associate with most land plants and deliver phosphorus to the host. Identification of biotic/abiotic factors that determine crop responses to AM fungal inoculation is an essential step for successful application of the fungi in sustainable agriculture. We conducted three field trials on soybean with a commercial inoculum and developed a new molecular tool to dissect interactions between the inoculum and indigenous fungi on the MiSeq sequencing platform. Regression analysis indicated that sequence read abundance of the inoculum fungus was the most significant factor that determined soybean yield responses to the inoculation, suggesting that dominance of the inoculum fungus is a necessary condition for positive yield responses. Agricultural practices (fallow/cropping in the previous year) greatly affected the colonization levels (i.e. read abundances) of the inoculum fungus via altering the propagule density of indigenous AM fungi. Analysis of niche competition revealed that the inoculum fungus competed mainly with the indigenous fungi that are commonly distributed in the trial sites, probably because their life-history strategy is the same as that of the inoculum fungus. In conclusion, we provide a new framework for evaluating the significance of environmental factors towards successful application of AM fungi in agriculture. |
| Rights: | © The Author(s) 2018 | | http://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/70989 |
| 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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Submitter: 江澤 辰広
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