- 著者
- Wataru Yazaki Tomohisa Shimasaki Yuichi Aoki Sachiko Masuda Arisa Shibata Wataru Suda Ken Shirasu Kazufumi Yazaki Akifumi Sugiyama
- 出版者
- Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles
- 雑誌
- Microbes and Environments (ISSN:13426311)
- 巻号頁・発行日
- vol.36, no.3, pp.ME21004, 2021 (Released:2021-07-06)
- 参考文献数
- 38
- 被引用文献数
- 3
Nitrogen deficiency affects soybean growth and physiology, such as symbiosis with rhizobia; however, its effects on the bacterial composition of the soybean root microbiota remain unclear. A bacterial community analysis by 16S rRNA gene amplicon sequencing showed nitrogen deficiency-induced bacterial community shifts in soybean roots with the marked enrichment of Methylobacteriaceae. The abundance of Methylobacteriaceae was low in the roots of field-grown soybean without symptoms of nitrogen deficiency. Although Methylobacteriaceae isolated from soybean roots under nitrogen deficiency did not promote growth or nodulation when inoculated into soybean roots, these results indicate that the enrichment of Methylobacteriaceae in soybean roots is triggered by nitrogen-deficiency stress.
3 0 0 0 OA Flavonoids in plant rhizospheres: secretion, fate and their effects on biological communication
- 著者
- Akifumi Sugiyama Kazufumi Yazaki
- 出版者
- Japanese Society for Plant Biotechnology
- 雑誌
- Plant Biotechnology (ISSN:13424580)
- 巻号頁・発行日
- vol.31, no.5, pp.431-443, 2014-12-25 (Released:2015-02-27)
- 参考文献数
- 120
- 被引用文献数
- 21 60
Flavonoids, one of the most-described group of plant “specialized metabolites”, consist of more than 10,000 structurally diverse compounds. Most flavonoids accumulate in plant vacuoles as glycosides, with some released by the roots into rhizospheres. These flavonoids are involved in biological communications with rhizobia, arbuscular mycorrhizal fungi, plant growth promoting rhizobacteria, pathogens, nematodes, and other plant species. Both aglycones and glycosides of flavonoids are found in root exudates and in soils. This review describes researches on the mechanisms of flavonoid secretion and the fate of flavonoids released into rhizospheres. This review also discusses the direction of future research that may elucidate the specific roles of flavonoids in biological communications in rhizospheres, enabling the utilization of flavonoid activities and functions in agricultural practice.