Experiments regarding the problem of differentiation in multicellular systems.
نویسندگان
چکیده
The temporal pattern of control by phytochrome of the enzyme lipoxygenase (EC 1.13.1.13) in the m ustard seedling (Sinapis alba L.) is described. The biosynthetic system which produces lipoxygenase does not respond to phytochrome (Pfr) up to 33.25 h after sowing (25 °C ). By this time the control by Pfr comes suddenly and fully into play. At 48 h after sowing the system escapes from the control by Pfr . Neither the beginning nor the end of the period of control is influenced by phytochrome. Interpretation of the data requires a double action control mechanism. It is argued that such a mechanism is necessarily a characteristic of development in multicellular organism.
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ورودعنوان ژورنال:
- Zeitschrift fur Naturforschung. Teil B, Chemie, Biochemie, Biophysik, Biologie und verwandte Gebiete
دوره 25 11 شماره
صفحات -
تاریخ انتشار 1970