Institute of Botany Chinese Academy of Sciences Beijing 100093 ChinaCenter for Plant Biology School of Life Sciences Tsinghua University Beijing 100084 ChinaiHuman Institute Shanghai Tech University Shanghai 201210 China;
Institute of Botany Chinese Academy of Sciences Beijing 100093 ChinaUniversity of Chinese Academy of Sciences Beijing 100049 China;
Center for Plant Biology School of Life Sciences Tsinghua University Beijing 100084 China;
pollen tube; apical actin structure; actin dynamics; actin turnover; ADF; AIP1;