| Positional relationship between the gamete fusion site and the first division plane in the rice zygote. | |
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MedLine Citation:
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PMID: 20462944 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In angiosperms, a zygote generally divides into a two-celled proembryo consisting of an apical and a basal cell that possess different cell fates. This first division of the zygote is a putative step in the formation of the apical-basal axis of the proembryo. The gamete fusion activates the egg, and the gamete fusion site on the zygote has been reported to provide a possible cue for subsequent zygotic development and/or embryonic patterning in animals and plants. In this study, the gamete fusion site on the rice zygote was labelled by in vitro fertilization of a rice egg cell with a fluorescence-stained sperm cell. The positional relationship between the gamete fusion site and the division plane formed by zygotic cleavage was monitored using a fixed culture of the fusion site-labelled zygote until the two-celled proembryo stage. The results indicate that gamete fusion sites exist on two-celled proembryos with no relation to the position of the first division plane, and that the gamete fusion site on the rice zygote does not function as a determinant for positioning the zygote division plane. |
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Authors:
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Keisuke Nakajima; Takao Uchiumi; Takashi Okamoto |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-05-12 |
Journal Detail:
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Title: Journal of experimental botany Volume: 61 ISSN: 1460-2431 ISO Abbreviation: J. Exp. Bot. Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-06-25 Completed Date: 2010-09-20 Revised Date: 2013-05-29 |
Medline Journal Info:
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Nlm Unique ID: 9882906 Medline TA: J Exp Bot Country: England |
Other Details:
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Languages: eng Pagination: 3101-5 Citation Subset: IM |
Affiliation:
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Department of Biological Sciences, Tokyo Metropolitan University, Minami-osawa Hachioji, Tokyo 192-0397, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cell Division Cell Fusion Germ Cells, Plant / cytology* Oryza sativa / cytology* Zygote / cytology* |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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