Masakazu Toyoshima   Naobumi V. Sasaki   Makoto Fujiwara   Shigeki Ehira   Masayuki Ohmori   Naoki Sato   
ARCHIVES OF MICROBIOLOGY 192(1) 23-31 2010年1月 [査読有り]
The filamentous cyanobacterium Anabaena sp. PCC 7120 fixes dinitrogen facultatively. Upon depletion of combined nitrogen, about 10% of vegetative cells within the filaments differentiate terminally into nitrogen-fixing cells. The heterocyst has be...
Kei H. Kojo   Makoto T. Fujiwara   Ryuuichi D. Itoh   
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY 73(12) 2632-2639 2009年12月 [査読有り]
While it has been established that binary fission of leaf chloroplasts requires the prokaryote-derived, division site determinant protein MinE, it remains to be clarified whether chloroplast division in non-leaf tissues and the division of non-col...
Makoto T. Fujiwara   Dongliang Li   Yusuke Kazama   Tomoko Abe   Tomohide Uno   Hiroshi Yamagata   Kengo Kanamaru   Ryuuichi D. Itoh   
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY 73(7) 1693-1697 2009年7月 [査読有り]
Symmetric chloroplast division requires a prokaryote-derived division regulator protein MinD, whose subchloroplastic localization remains to be completely established. We investigated the localization and functionality of AtMinD1 (Arabidopsis thal...
Makoto T. Fujiwara   Kohsuke Sekine   Yoshiharu Y. Yamamoto   Tomoko Abe   Naoki Sato   Ryuuichi D. Itoh   
PLANT AND CELL PHYSIOLOGY 50(6) 1116-1126 2009年6月 [査読有り]
Chloroplast division involves the tubulin-related GTPase FtsZ that assembles into a ring structure (Z-ring) at the mid-chloroplast division site, which is where invagination and constriction of the envelope membranes occur. Z-ring assembly is usua...
PLANT AND CELL PHYSIOLOGY 50(6) 1127-1141 2009年6月 [査読有り]
To elucidate the mechanism(s) underlying dioecious flower development, the present study analyzed a SUPERMAN (SUP) homolog, SlSUP, which was identified in Silene latifolia. The sex of this plant is determined by heteromorphic X and Y sex chromosom...
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...