Haruko Kuroiwa

TL;DR: It is shown by laser cell ablation that two synergid cells adjacent to the egg cell attract the pollen tube, and a single synergid cell was sufficient to generate an attraction signal, and two cells enhanced it.

TL;DR: P phylogenetic analyses of various lineages of mitochondria-containing eukaryotic organisms using nuclear multigene sequences, including the complete sequences from the primitive red alga Cyanidioschyzon merolae, resolved a robust non-sister relationship between green plants and red algae within a robust monophyletic group composed of red algae and the eukARYotic organisms belonging to Group B.

TL;DR: The behavior of cell nuclei, mitochondria and chloroplasts was followed during the mitotic cycle in the primitive unicellular red alga Cyanidioschyzon merolae by epifluorescence microscopy after staining with 4',6-diamidino-2-phenylindole (DAPI) or 3,3'-dihexyloxacarbocyanine iodide (DIOC6).

TL;DR: SigA shows high sequence similarity to the sigma factors of cyanobacteria, which is indicative of the ancestral endosymbiotic event and subsequent transfer of the sigA gene to the nuclear genome.

TL;DR: Biochemical and immunocytochemical investigations suggest that the FtsZ ring;–based system, which originated from a plastid ancestor, cyanobacteria, and the plastsid-dividing ring;-based system form a complex and are involved inplastid division by distinct modes.