Induced morphogenetic variations inAspergillus oryzae by 8-azaguanine

Résumé Proliférations de l'appareil sporifère d'Aspergillus oryzae traité à l'azaguanine.

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The authors are deeply indebted to Dr.O. Isler of F. Hoffmann-La Roche, Basel (Switzerland) for his generous gift of 8-azaguanine and 6-azauracil. They are also grateful to the University Grants Commission, at New Delhi, which financed this research programme by grant-in-aid No. F-8/5-63 (G), to R.K.K.     

Dehydrogenation of khusilic acid

Zusammenfassung Neue Befunde zur Interpretation der Selendehydrierung.     

L'effet de la basse température sur l'incorporation de précurseurs des acides nucléiques et des protéines dans les cellules du méristème radiculaire deVicia faba

Summary The uptake of labelled RNA and protein precursors inVicia faba root meristems into nuclei at 4°C is less depressed than in the cytoplasm. Reversion of the normal pattern of incorporation would seem to indicate an inhibition of the RNA transfer from nucleus to cytoplasm.     

Cordycepin inhibits induction of puffs by ions inChironomus salivary gland chromosomes

Zusammenfassung In 80–85% aller Speicheldrüsenzellen vonChironomus thummi bewirkt 100 g/ml Cordycepin: 1. Fast vollständige Hemmung des³H-Uridin-Einbaues in Chromosomen und Nukleolen. 2. Rückbildung aller vorhandenen Puffs und Kollaps der Balbiani-Ringe und 3. Hemmung der Puff-Induktion durch anorganische (K/Mg) und organische (Tryptophan) Ionen.