J-GLOBAL ID:200904014756790730  Research Project code:0250000204 Update date:Dec. 15, 2003

Protection of soli-born diseases by root endophytic fungi in Solanaceous and Cucurbitaceous crops

Study period:1998 - 2004
Organization (1):
Investigating Researcher (1):
Research overview:
We consider microorganisms that are able to colonize the rhizosphere and then enter, survive or proliferate endophytically can be efficient biocontrol agents, and proposed the idea that there is a wide range of naturally occurring fungal root endophytes that have the potential to suppress disease in their host plants. Based on the idea, we conducted a screening of endophytic candidates that were effective in suppressing Verticillium or Fusarium wilt in host seedlings. In this year, three hundred and forty-nine fungal endophytes were obtained from a total of 1214 root segments of eggplant, melon, barley, and Chinese cabbage grown as bait plants in a mixed soil made up of samples from different forest soil. Five of the 349 isolates, once reinoculated in axenically reared Melon seedlings, almost completely suppressed the effects of a post-inoculated and virulent strain of Fusarim oxysporum f. sp. melonis. All five isolates effective against the pathogen was belonging to Dark-septate fungus had been obtained from the roots of Chinese cabbage. They were easily recovered from preinoculated plants challenged with the pathogen.
Keywords (4):
Chinese cabbage ,  endophyte ,  blue stem ,  biological pest control
Research program: Ordinary Research

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