Study on mechanisms of Xanthomonas oryzae pv. oryzae TAL effectors on induction of rice susceptibility to the bacterium

2015 Fiscal Year Final Research Report

• Project/Area Number: 25450062
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant protection science
• Research Institution: Kyoto Prefectural University
• Principal Investigator: TSUGE Seiji 京都府立大学, 生命環境科学研究科(系), 准教授 (10254319)
• Research Collaborator: USAMI Mao ; IKAWA Yumi
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: イネ白葉枯病菌 / エフェクター / hrp / 病原性・非病原性

Outline of Final Research Achievements

Xanthomonas oryzae pv. oryzae MAFF311018 produces 15 transcriptional activator-like (TAL) effectors, which are directly secreted into rice cells via the type III secretion system and, there, activates susceptibility- or resistance-related rice genes. We analyzed importance of each TAL effector in virulence of the bacterium and found that the mutant lacking two TAL effector genes completely lost bacterial virulence on rice. Previous reports showed that both genes activate sucrose transporter gene OsSWEET11 and OsSWEET13, resppectively. The results suggest that acquisition of sucrose by activating rice sucrose transporters is essential for virulence of X. oryzae pv. oryzae.

Free Research Field

植物病理学