Study on plant targetting mechanism of soil-borne plant pathogen Ralstonia solanacearum

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04478
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied microbiology
• Research Institution: Hiroshima University
• Principal Investigator: KATO Junichi 広島大学, 先端物質科学研究科, 教授 (90231258)
• Co-Investigator(Renkei-kenkyūsha): TAJIMA Takahisa 広島大学, 大学院先端物質科学研究科, 助教 (80571116) ; KAWASAKI Takeru 広島大学, 大学院先端物質科学研究科, 助教 (00510299)
• Research Collaborator: VANGNAI Alisa S. チュラロンコン大学, 理学部, 准教授
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 走化性 / 青枯病菌 / 物質認識機構 / 植物感染 / 植物-細菌相互作用 / 走化性センサー

Outline of Final Research Achievements

Bacteria continuously sense chemical concentrations around cells and swim to their favorite sites or away from unfavorable sites. This behavioral responses are called chemotaxis. Ralstonia solanacearum, a soil-borne plant pathogen, locates its host plants by moving in soil. Chemotaxis is thought to have an important role in this early stage of infection by R. solanacearum. In this study, we have investigated molecular biology of R. solanacearum chemotaxis to understand how it locates rhizosphere of host plants and how chemotaxis is involved in plant infection. Methyl bromide is effective for controlling R. solanacearum infection, but its usage have been banned because it is a very strong ozone-depleting substance. It is highly expected that this study provides information valuable to establish environmentally-friendly controlling method of R. solanacearum wilt, which is independent on methyl bromide.

Free Research Field

環境バイオテクノロジー、分子生態工学、応用微生物学