Approach of allelopathy study with Arabidopsis thaliana (L.) Hevnh. and Neurospora crassa |
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Authors: | KAORI TOMITA-YOKOTANI TAKAKO KATO MOHAMMAD MASUD PARVEZ YASUHEI MORI NOBUHARU GOTO KOJI HASEGAWA |
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Institution: | Institute of Applied Biochemistry,;Graduate School of Life and Environmental Sciences, University of Tsukuba,;Chemical Ecology Unit, National Institute for Agro-Environmental Sciences,;Master's Program in Biosystem Studies, Tsukuba, Ibaraki and;Department of Biology, Miyagi University of Education, Aramaki, Aoba, Sendai, Japan |
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Abstract: | Allelopathy in Arabidopsis seeds was investigated in the present study because there are few available reports of allelopathy studies regarding the early development stage of the plant life cycle, and because Arabidopsis is widely used as a model plant for molecular biology. When cockscomb ( Celosia cristata ) was incubated together with Arabidopsis seeds, the growth of cockscomb was promoted by Arabidopsis seeds. Exudate of Arabidopsis seeds showed a promotive activity on the growth of cockscomb and Arabidopsis itself. A new method for studying allelopathic mechanisms involving the interaction of the plant Arabidopsis thaliana (L.) Hevnh. and the fungus Neurospora crassa was suggested. Arabidopsis seed exudate and the water-soluble fraction of the exudate promoted Arabidopsis growth and reduced fungal germination, indicating that the seed exudate has a species-selective activity. Conversely, the ethylacetate-soluble fraction inhibited growth of all tested materials in the current study. These results demonstrate that the water-soluble substance(s) released from Arabidopsis seeds have species-selective activity on growth of both plants and microorganisms. |
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Keywords: | allelopathy allelopathy-diversity Arabidopsis thaliana (L ) Hevnh Neurospora crassa |
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