Organelle dynamics in the plant male gametophyte has received attention for its importance in pollen tube growth and cytoplasmic inheritance. We recently revealed the dynamic behaviors of plastids in living Arabidopsis pollen grains and tubes, usi...
The appearance of leaf mesophyll chloroplasts in angiosperms is characterized by their uniform and static shape, which is molded by symmetric division of the preexisting organelles, involving three prokaryote-derived proteins: the division executo...
The unicellular rhodophyte Cyanidioschyzon merolae, having a single plastid and a single mitochondrion, is suitable for the analysis of the cell cycle involving the division of organelles. In conventional methods of synchronous culture of algae, l...
Makoto T. Fujiwara   Haruki Hashimoto   Yusuke Kazama   Tomonari Hirano   Yasushi Yoshioka   Seishiro Aoki   Naoki Sato   Ryuuichi D. Itoh   Tomoko Abe   
PROTOPLASMA 242(1-4) 19-33 2010年6月
The behaviour and multiplication of pollen plastids have remained elusive despite their crucial involvement in cytoplasmic inheritance. Here, we present live images of plastids in pollen grains and growing tubes from transgenic Arabidopsis thalian...
Ryuuichi D. Itoh   Hideo Yamasaki   Andi Septiana   Shigeo Yoshida   Makoto T. Fujiwara   
PHYSIOLOGIA PLANTARUM 139(2) 144-158 2010年6月 [査読有り]
Plastids assume various morphologies depending on their developmental status, but the basis for developmentally regulated plastid morphogenesis is poorly understood. Chemical induction of alterations in plastid morphology would be a useful tool fo...
葉緑体分裂には、進化的に保存されたバクテリア様分裂因子群と真核生物特有のダイナミン様タンパク質が関わる。バクテリア様因子のうちMinDとMinEの二種はバクテリアでは細胞分裂の位置決定に関わる。最近、シロイヌナズナMinE相同因子(AtMinE1)が第三の葉緑体分裂因子として機能すること、またシロイヌナズナ葉緑体分裂異常変異体arc11 (accumulation and replication of chloroplasts 11)がMinD相同...