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.

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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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