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Avenaol, a germination stimulant for root parasitic plants from Avena strigosa
- Source :
- Phytochemistry. 103:85-88
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- Root exudates from the allelopathic plant, black oat (Avena strigosa Schreb.), were found to contain at least six different germination stimulants for root parasitic plants, but no known strigolactones (SLs). One of these germination stimulants was purified and named avenaol. Its HR-ESI-TOFMS analysis indicated that the molecular formula of avenaol is C20H24O7, and thus it contains an additional carbon compared with known C19-SLs. Its structure was determined as 5-((E)-(5-(3-hydroxy-1,5,5-trimethyl-2-oxobicyclo[4.1.0]heptan-7-yl)-2-oxodihydrofuran-3(2H)-ylidene)methoxy)-3-methylfuran-2(5H)-one, by 1D and 2D NMR spectroscopy, and ESI- and EI-MS spectrometry. Although avenaol contains the C-D moiety, the common structural feature for all known SLs, it lacks the B ring and has an additional carbon atom between the A and C rings. Avenaol is a potent germination stimulant of Phelipanche ramosa seeds, but only a weak stimulant for seeds of Striga hermonthica and Orobanche minor.
- Subjects :
- Striga hermonthica
biology
Orobanche
Plant Exudates
medicine.medical_treatment
Germination
Striga
Plant Science
General Medicine
Horticulture
Poaceae
biology.organism_classification
Plant Roots
Biochemistry
Stimulant
Lactones
Phelipanche ramosa
Orobanche minor
Botany
Avena strigosa
medicine
Molecular Biology
Two-dimensional nuclear magnetic resonance spectroscopy
Allelopathy
Subjects
Details
- ISSN :
- 00319422
- Volume :
- 103
- Database :
- OpenAIRE
- Journal :
- Phytochemistry
- Accession number :
- edsair.doi.dedup.....bc036b4711714aec2346778de26af02c