Journal
JOURNAL OF PESTICIDE SCIENCE
Volume 42, Issue 1-2, Pages 58-61Publisher
PESTICIDE SCI SOC JAPAN
DOI: 10.1584/jpestics.D16-103
Keywords
maize; strigolactones; germination stimulant; parasitic weeds
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Funding
- Science and Technology Research Promotion Program for Agriculture, Forestry, Fisheries and Food Industry
- KAKENHI [15K07093, 26850069]
- JGC-S Scholarship Foundation
- RPD (JSPS)
- Grants-in-Aid for Scientific Research [15K07093, 26850069] Funding Source: KAKEN
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One of the germination stimulants for root parasitic weeds produced by maize (Zea mays) was isolated and named methyl zealactonoate (1). Its structure was determined to be methyl (2E,3E)-4-((RS)-3,3-dimethyl-2-(3-methyl-but-2-en-2-yl)-5-oxotetrahydrofuran-2-yl)-2-((((R)-4-methyl-5-oxo-2,5-dihydrofran-2-yl)oxy)methylene)but-3-enoate using by 1D and 2D NMR spectroscopy and ESI and EI-MS spectrometry. Feeding experiments with C-13-carlactone (CL), a biosynthetic intermediate for strigolactones, confirmed that 1 is produced from CL in maize. Methyl zealactonoate strongly elicits Striga hermonthica and Phelipanche ramosa seed germination, while Orobanche minor seeds are 100-fold less sensitive to this stimulant. (C) Pesticide Science Society of Japan
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