Gamete fusion site on the egg cell and autonomous establishment of cell polarity in the zygote
Gamete fusion site on the egg cell and autonomous establishment of cell polarity in the zygote
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DOI：
10.4161/psb.5.11.13468
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发表时间：
2010-01-01
影响因子：
2.9
通讯作者：
Okamoto, Takashi
中科院分区：
文献类型：
--
作者：
Okamoto, Takashi
Gamete fusion activates the egg in animals and plants, and the gamete fusion site on the zygote might provide a possible cue for zygotic development and/or embryonic patterning. In angiosperms, a zygote generally divides into a two-celled proembryo consisting of an apical and a basal cell with different cell fates. This is a putative step in the formation of the apicalbasal axis of the proembryo. We observed the positional relationship between the gamete fusion site and the division plane formed by zygotic cleavage using an in vitro fertilization system with rice gametes. There was no relationship between the gamete fusion site and the division plane leading to the two-celled proembryo. Thus, the gamete fusion site on the rice zygote does not appear to function as a determinant for positioning the zygote division plane, and the zygote apparently possesses autonomous potential to establish cell polarity along the apicalbasal axis for its first cleavage.
