Research Project
Grant-in-Aid for Scientific Research (B)
Seed or root exudate components are known to regulate nematode behaviours, however currently it’s unclear how plant affect the spermosphere or rhizosphere microbiota composition. Here we showed compounds associated with the seed coat mucilage or root exudates can regulate the behaviour of soil-borne pathogens, the root-knot nematodes, M. incognita.We found that flax seed exudate is capable of attracting RKN in a dose-dependent manner. The RKN attractant could be purified from flax mucilage and consists of a hydrophilic carbohydrate derivatives. On the other hand, we screened a chemical library of synthetic compound for M. incognita attractants. M. incognita were found to be attracted specifically by natural compounds that possess three to five methylene groups between two terminal amino groups. Using cryo-TOF-SIMS/SEM, one of the diamine was indeed detected in soybean root cortex cells and the surrounding rhizosphere, establishing a chemical gradient.
本研究により、線虫の植物誘引物質が同定出来た。また、植物への感染過程における分子機構の一端も明らかになった。これらの情報は、学術的には、植物-動物相互作用の分子機構が明らかになっただけでなく、どのようにパラサイトーホストの関係が進化してきたかを紐解く鍵になると考えられる。また、これらの情報は、線虫のトラップ剤の開発や、線虫に抵抗性を持つ作物品種の開発にも繋がると考えられ、基礎研究だけでなく、応用研究分野にも、今後、広く、利用されると考えられる。
All 2019 2018 2017 Other
All Int'l Joint Research (4 results) Journal Article (19 results) (of which Int'l Joint Research: 9 results, Peer Reviewed: 19 results, Open Access: 7 results) Presentation (18 results) (of which Int'l Joint Research: 9 results, Invited: 11 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)
Plant Biotechnology
Volume: 36 Issue: 3 Pages: 205-208
10.5511/plantbiotechnology.19.0725a
130007724770
Acta Phytotax. Geobot.
Volume: In Press
Current Biology
Volume: 29 Issue: 20 Pages: 3525-3531
10.1016/j.cub.2019.08.071
Plant Cell Physiol
Volume: 60 Issue: 10 Pages: 2255-2262
10.1093/pcp/pcz118
Phytotaxa
Volume: 404 Pages: 137-145
10.5962/bhl.title.154048
120006951628
Current Opinion in Plant Biology
Volume: 51 Pages: 81-87
10.1016/j.pbi.2019.04.005
PLoS Genet.
Volume: 7 Issue: 3 Pages: e1007997-e1007997
10.1371/journal.pgen.1007997
120006621164
Mol. Plants.
Volume: 12 Issue: 1 Pages: 99-122
10.1016/j.molp.2018.11.008
Plant Cell & Environment.
Volume: 42 Issue: 3 Pages: 1033-1044
10.1111/pce.13475
Nature Plants
Volume: 4 Issue: 12 Pages: 1071-1081
10.1038/s41477-018-0317-4
Curr. Biol.
Volume: 28 Issue: 15 Pages: 838-840
10.1016/j.cub.2018.06.040
Volume: 4 Issue: 8 Pages: 596-604
10.1038/s41477-018-0212-z
Volume: 35 Issue: 1 Pages: 17-22
10.5511/plantbiotechnology.18.0122a
130006727675
J. Biol.
Volume: 9 Issue: 4 Pages: 27-34
10.5539/ijb.v9n4p27
Plant and Cell Physiology
Volume: 58 Issue: 11 Pages: 1848-1856
10.1093/pcp/pcx139
Cell
Volume: 171 Issue: 2 Pages: 287-304
10.1016/j.cell.2017.09.030
120006353839
Frontiers in Plant Science
Volume: 8 Pages: 1195-1195
10.3389/fpls.2017.01195
International Journal of Biology
Volume: 9 Issue: 3 Pages: 12-16
10.5539/ijb.v9n3p51
Plant J.
Volume: 91 Issue: 2 Pages: 306-324
10.1111/tpj.13566
http://www.sci.kumamoto-u.ac.jp/~sawa/