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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2010.01.014
|2 doi
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|a pubmed24n0651.xml
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|a (DE-627)NLM195240626
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|a (NLM)20170980
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Kato-Noguchi, Hisashi
|e verfasserin
|4 aut
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|a Contribution of momilactone A and B to rice allelopathy
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 03.08.2010
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a 2010 Elsevier GmbH. All rights reserved.
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|a Eight cultivars of rice (Oryza sativa L.) inhibited shoot and root growth of Echinochloa crus-galli when co-cultured with rice seedlings in a bioassay medium. Momilactone A and B were found in the bioassay medium of all rice cultivars, and concentrations of momilactone A and B in the medium were 0.21-1.5 and 0.66-3.8 micromol/L, respectively, indicating that all rice cultivars may secrete momilactone A and B into the medium. Exogenously applied momilactone A and B inhibited the growth of shoots and roots of E. crus-galli at concentrations greater than 30 and 1 micromol/L, respectively. The concentrations required for 50% growth inhibition of E. crus-galli shoots and roots, respectively, were 146 and 91 micromol/L for momilactone A and 6.5 and 6.9 micromol/L for momilactone B. Considering the growth inhibitory activity and concentrations found in the bioassay medium, momilactone A may have caused only 0.8-2.2% of the observed growth inhibition of E. crus-galli roots and shoots by rice. However, momilactone B in the medium was estimated to be able to cause 59-82% of the observed growth inhibition of E. crus-galli roots and shoots by the rice seedlings. In addition, the concentrations of momilactone B in the medium reflected the observed differences in the growth inhibition of E. crus-galli by the eight rice cultivars investigated. This suggests that the allelopathic activity of rice may depend primarily on the secretion level of momilactone B. Therefore, momilactone B may play a very important role in rice allelopathy
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|a Journal Article
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|a Diterpenes
|2 NLM
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|a Lactones
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a momilactone B
|2 NLM
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|a momilactone A
|2 NLM
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|a 51415-07-7
|2 NLM
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| 700 |
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|a Hasegawa, Morifumi
|e verfasserin
|4 aut
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| 700 |
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|a Ino, Takeshi
|e verfasserin
|4 aut
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| 700 |
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|a Ota, Katsumi
|e verfasserin
|4 aut
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|a Kujime, Hiroya
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 167(2010), 10 vom: 01. Juli, Seite 787-91
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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|g volume:167
|g year:2010
|g number:10
|g day:01
|g month:07
|g pages:787-91
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|u http://dx.doi.org/10.1016/j.jplph.2010.01.014
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