Hisae Maki

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Polyphenol oxidase (PPO) activity increased markedly in the micropylar region of the endosperm of tomato (Lycopersicon esculentum) seeds after radicle protrusion. Tissue-printing analyses demonstrated that the majority of the activity is localized in the micropylar area. The increase in the activity was due to the increase in the amounts of enzyme. Within(More)
The incorporation of xyloglucan oligosaccharide (XXXG) into the walls of suspension-cultured tobacco cells accelerated cell expansion followed by cell division, changed cell shape from cylindrical to spherical, decreased cell size, and caused cell aggregation. Fluorescent XXXG added to the culture medium was found to be incorporated into the surface of the(More)
Physarum plasmodium lives as a slimy mass of protoplast in the dark fragments into small multinucleated microplasmodia (mPL) in a liquid medium. When mPL are exposed to several unfavorable environments, they transform into “spherules” with a cell wall. Using a synchronous spherule-induction system for mPL, we examined the effect of 2,6-dichlorobenzonitrile(More)
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