%0 Journal Article
%T Calcium Distribution in Developing Anther Cells of No-pollen Type CMS and Maintainer Lines of Rice(Oryza sativa L.)<br>水稻非花粉型细胞质雄性不育系及其保持系花药发育过程中Ca^2＋的分布变化（英文）
%A OUYANG Jie
%A ZHANG Ming-Yong
%A XIA Kuai-Fei
%A <br>欧阳杰
%A 张明永
%A 夏快飞
%J 植物科学学报
%D 2011
%I 
%X Ca2+ is a well-known "second messenger" in higher plants and is related to their sexual reproduction. To test the effects of calcium localization on pollen abortion in developing rice anthers, calcium distribution during anther development in no-pollen type cytoplasmic male sterile (CMS) rice G37A and its maintainer line G37B at different stages was examined by potassium antimonate precipitation method. Our study showed that many differences existed in Ca2+ distribution in developing anthers between the two studied rice lines. In the fertile anthers of G37B,few Ca2+ precipitates were detected at the pollen mother cell stage and the dyad stage. However, Ca2+ precipitates dramatically increased in the tapetal cells, on the exine of pollen grains and the surface of Ubisch Bodies at the uninucleate pollen stage. After this,Ca2+ precipitates decreased on the anther wall,although many Ca2+ precipitates still existed on the exine of pollen grains. In the sterile anthers of G37A,abundant Ca2+ precipitates accumulated in the microsporocyte,on the anther wall and especially in the middle layer,the tapetum and the ubisch bodies located at the pollen mother cell stage and the dyad stage. After the tetrad stage,Ca2+ precipitates in sterile anthers of G37A decreased generally, and could not be detected at the inner longitudinal plasma membrane of the tapetum. The results proposed that redundant calcium precipitates in sterile anthers may be related with pollen abortion.Kev words: Rice;CMS;Pollen;Potassium antimonite;Ca2+
%K Ca2+<br>水稻
%K 细胞质雄性不育
%K 花粉
%K 焦锑酸钾
%K Ca^2＋
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=9973DE552EA54506F7AABD4780345ED2&aid=0DF0B1634F7820A1854C0D751ADDBBA4&yid=9377ED8094509821&vid=771469D9D58C34FF&iid=CA4FD0336C81A37A&sid=91C9056D8E8856E0&eid=7555FB9CC973F695&journal_id=1000-470X&journal_name=武汉植物学研究&referenced_num=0&reference_num=34