GPS in pollen tubes: Found!  

作　　者：Sha Li Yan Zhang 

机构地区：[1]State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University

出　　处：《Science China(Life Sciences)》2016年第4期438-439,共2页中国科学（生命科学英文版）

摘　　要：Sexual reproduction of flowering plants depends on the delivery of two immotile sperm cells to the female gametophyte（FG）,i.e.the embryo sac,through the growth of a pollen tube,a long cylindrical cellular extension from a pollen grain.The journey of pollen tubes toward the embryo sacs is led by female cues,which guide the path of the pollen tubes.Sexual reproduction of flowering plants depends on the delivery of two immotile sperm cells to the female gametophyte(FG),i.e.the embryo sac,through the growth of a pollen tube,a long cylindrical cellular extension from a pollen grain.The journey of pollen tubes toward the embryo sacs is led by female cues,which guide the path of the pollen tubes.Recognition between the male-female gametophytes in some cases precedes successful

关 键 词：pollen embryo fertilization Recognition flowering sperm journey directional reproduction toward 

分 类 号：Q944.42[生物学—植物学]