𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Inhibition of aggregation by light in the cellular slime moldDictyostelium discoideum

✍ Scribed by Donat-P. Häder; Kenneth L. Poff

Publisher
Springer
Year
1979
Tongue
English
Weight
945 KB
Volume
123
Category
Article
ISSN
0302-8933

No coin nor oath required. For personal study only.

✦ Synopsis

Aggregation of Dictyostelium amoebae is inhibited by light. White light intensities >102 laW-cm 2 cause an inhibition which reaches a saturation at 2.103 laW" cm-2. The action spectrum, based on photon fluence -response curves, shows a major peak around 405 nm and extends through most of the visible spectrum with a secondary maximum at about 530nm. The action spectrum of the inhibition of aggregation resembles the action spectrum of accumulations of amoebae in light traps and the action spectrum ofphotodispersal from light traps; it does not resemble the action spectrum of phototaxis in pseudoplasmodia.

📜 SIMILAR VOLUMES

Macrocyst formation in the cellular slim
Macrocyst formation in the cellular slime moldDictyostelium mucoroides: Involvement of light and volatile morphogenetic substance(s)
✍ Filosa, Michael F. 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 232 KB

## Abstract In the dark, cultures of __Dictyostelium mucoroides__ produce macrocysts while in the light fruiting bodies are formed. However, dark cultures will form fruiting bodies if grown over activated charcoal indicating that some gas or volatile substance is involved. Light cultures will form

The localization and fate of concanavali
The localization and fate of concanavalin a in amoebae of the cellular slime mold,Dictyostelium discoideum
✍ Gillette, Martha Ulbrick ;Dengler, R. E. ;Filosa, M. F. 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 English ⚖ 334 KB 👁 1 views

## Abstract Two different methods for the localization of Con A indicate that this lectin is bound to the surface of __Dictyostelium discoideum__ amoebae. Redistribution of the Con A receptors occurs both on cells in suspension and cells moving on an agar surface. Internalization of the Con A does