Satoshi Iwakami

Graduate School of Agriculture, Kyoto UniversityAssistant Professor*Profile is at the time of the award.

2019Inamori Research GrantsBiology & Life sciences

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Research topics: Unlocking the mystery of a super weed that acquired resistance to herbicides

Keyword

Summary: In modern agriculture, efficient weed control through herbicides is an essential technology. Repeated use of herbicides, however, has given birth to weeds that have developed resistance to such herbicides, posing a major threat to crop production. One of the most problematic examples is a “super weed” on which many herbicides do not work due to a mutation of enzyme genes that detoxify the herbicides. It is assumed that in these resistant weeds, a super-enzyme gene, which detoxifies many herbicides, is activated, but little is known about its causal genes or its activation mechanism. Discovered in the U.S., herbicide-resistant Echinochloa colonum (L.) Link shows resistance to many herbicides and its resistance is attributable to herbicide detoxification metabolism. This proposed research aims to identify the super-enzyme gene that is involved in detoxification of herbicides and to understand the mechanism of acquisition of resistance to multiple herbicides.

Message from recipient

We are most grateful for the research grant, which we will use to elucidate the mechanism of adaptive evolution of weeds.

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