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1.
Zusammenfassung Es wird ein neu isolierter, virulenterB. subtilis-Phage beschrieben. Die durch Phenol-Extraktion gewonnene DNA dieses Phagen ist infektiös für kompetente Zellen vonB. subtilis. Bedingungen, unter denen maximale Infektiosität dieser DNA vorliegt, wurden experimentell ermittelt. Einige Eigenschaften, in denen sich dieses System infektiöser Phagen-DNA von der Transformation von Bakteriengenen durch bakterielle DNA unterscheidet, werden diskutiert.

With 7 Figures in the Text

Stipendiat 1962/1963 of Humboldt-Stiftung, Bad Godesberg

Habilitanden Stipendiat 1962/1963 of Deutsche Forschungsgemeinschaft, Bad Godesberg.  相似文献   

2.
Summary We deal with a new variety ofAspergillus which we callAspergillus gracilis Bainiervar. sartoryi (Biourge) Batista, Lima and Vital.This variety appears to be very important under the phylogenetic point of view, apparently being an intermediate form betweenAspergillus andPenicillium.Its morphology resemblesA. gracilis but the conidia characteristics are distinct; we took the epithetsartoryi fromA. sartoryi Biourge which was not described by the respective author.We suggest, too, the transfer of the seriesA. restrictus, where we put our new variety, from the groupA. glaucus, to become independant, as a connective series in the phylogenetic development betweenAspergillus andPenicillium, since the type of the series and the other elements that it embraces does not produce sclerotia or cleistothecia and the conidial apparatus offers curious similarity toPenicillium. Besides, some fungi of the series grow well in certain culture media, in complete discordance with the members of the groupA. glaucus.

Publiçacão no 4

Chefe do Instituto de Micologia;

Diretor do Instituto de Antibióticos e Prof. de Microbiologia da Escola de Química;

Assistente micologista do Instituto de Micologia — (Todos da Universidade do Recife).

Os autores declinam o seu agradecimento ao Dr.Heraldo da Silva maia, Assistente micologista eD. Marilene Maranhão Moreira, Auxiliar-Técnico, do Instituto de Micologia, pela colaboração que lhes prestaram, durante a realização do presente trabalho.  相似文献   

3.
Summary Crossing over in linkage group I ofChlamydomonas reinhardi was studied by means of the analysis of 1721 unordered tetrads. The data indicate that chiasma interference is positive, that chromatid interference is absent and that crossing over occurs at the 4-strand stage.
Zusammenfassung Mit Hilfe der Analyse von 1721 ungeordneten Tetraden wurde das crossing-over in der Koppelungsgruppe I vonChlamydomonas reinhardi untersucht. Aus der Häufigkeit der verschiedenen Tetraden-Typen wird geschlossen, daß crossingover im Vierstrang-Stadium geschieht, und daß eine positive Chiasma-Interferenz existiert, während eine Chromatiden-Interferenz nicht vorkommt.


With 2 Figures in the Text

This work was supported by the United States Public Health Service (Grant No. E 1421) and the National Science Foundation (Grant No. G 2812).

A portion of this work was conducted while a Public Health Service Research Fellow of the National Cancer Institute.  相似文献   

4.
Zusammenfassung Die Fischfamilie der Cypriniden zeigt nach Chromosomenzahl und DNS-Gehalt/Zelle ein Diploid-Tetraploid-Verhältnis. Eine Duplikation der MDH-Isoenzyme läßt sich in der tetraploiden Gruppe nachweisen. Nur der tetraploide Cyprinus carpio hat ein Muster entsprechend der diploiden Gruppe.
Polyploidization in the fish family Cyprinidae Duplication of the gene loci for NAD-dependent malate dehydrogenase
Summary The fish family Cyprinidae can be classified into two groups, a diploid one and a tetraploid one, as shown by chromosome analysis and measurements of the DNA content per cell. Duplications of the MDH isoenzymes can be demonstrated in the tetraploid group with one exception: Cyprinus carpio reveals the diploid pattern.


Direktor: Prof. Dr. Dr. H. Ritter

Mit Unterstützung durch die Deutsche Forschungsgemeinschaft.  相似文献   

5.
The spermatophores of Amblypygi and Uropygi are complicated structurs and vary in different species. In Mastigoproctus, the size and shape of the spermatophores prevent bastardation between M. giganteus and M. brasilianus. Taxonomic and phylogenetical implications are discussed.

Mit Unterstützung der Deutschen Forschungsgemeinschaft.  相似文献   

6.
Summary This paper deals with the study of two strains ofHanseniaspora valbyensis Kloecker respectively isolated from human cecal appendix contents and from epidermal lesions in one case of dermatomycosis.

Publicação no 183  相似文献   

7.
A. K. Koul 《Chromosoma》1964,15(3):243-245
Zusammenfassung Die Bildung von Quadri- und Hexavalenten in Pollenmutterzellen von Coix aquatica Roxb. beruht auf nicht-homologer Assoziation heterochromatischer Abschnitte.

A part of the Doctoral thesis approved by the University of Agra.  相似文献   

8.
Zusammenfassung Es wurden 328 Tomatensorten auf ihr Verhalten gegenüberSynchytrium endobioticum geprüft. Sämtliche Sorten erwiesen sich als hochanfällig.
Summary 328 tomato varieties were tested for their reaction toSynchytrium endobioticum. All varieties were shown to be highly susceptible.


Mit 1 Abbildung  相似文献   

9.
Ohne Zusammenfassung
The adrenal gland ofTupaia belangeri

Die Untersuchungen wurden durch Mittel der Deutschen Forschungsgemeinschaft gefördert.  相似文献   

10.
Summary The procedure which leads to the restoration of the diploid chromosomal number in the egg of the parthenogenetic Luffia ferchaultella is similar in all the eggs laid by one female. But it may vary in the eggs of closely related females (mother and daughters or sisters). Therefore it is not a characteristic of the parthenogenetic strain.

Au Professeur Bauer, en témoignage d'admiration.

Travail subventionné par le Fonds National Suisse de la Recherche Scientifique.  相似文献   

11.
Haplosyllis xeniaecola sp. n. is described. It was collected by W. Kükenthal fromXenia viridis (Octocorallia) at Ternate, Molukken Islands.

Mitglied der Taxonomischen Arbeitsgruppe an der Biologischen Anstalt Helgoland  相似文献   

12.
Ohne Zusammenfassung
Adrenal function in maleTupaia belangeri Adrenal weight, ascorbic acid and glucocorticoid concentration in the blood after short and prolonged psychosocial stress

Herrn Prof. Dr. H. Autrum danke ich sehr für sein Interesse und die Förderung dieser Arbeit. Besonderer Dank gilt Frau M. Jaenicke für ihre Hilfe bei den chemischen Untersuchungen.

Die Arbeit wurde durch Mittel der Deutschen Forschungsgemeinschaft gefördert.  相似文献   

13.
The larvae of Cerura vinula L. and Notodonta anceps Goeze secrete formic acid for defence. The glandular protective system which forms the acid and changes of the cell structure were studied with the light-microscope.

Mit dankenswerter Unterstützung der Deutschen Forschungsgemeinschaft.  相似文献   

14.
Summary For the first time the Authors have proved in the laboratory and in the fieldB. thuringiensis against the citrus-flower moth (Prays citri Mill.) successfully.

La memoria originale è stata publicata per esteso nelBollettino dell'Istituto di Entomologia Agraria e dell'Osservatorio di Fitopatologia di Palermo, 6.  相似文献   

15.
    
J. Reinert 《Planta》1959,53(3):318-333
Summary A strain of callus tissue fromDaucus carota, which for years formed only roots on a coconut milk containing nutrient, could be induced to form shoots by transfer onto a synthetic medium. Formation of roots and shoots is controllable by manipulation of this medium. While most of the roots develop as typical monopolar organs, the shoots arise from bipolar adventitious embryos which develop in the callus to complete plantlets. The course of development of these “embryos” and the r?le of various components of the synthetic medium in the organogenesis are discussed.

Mit 13 Textabbildungen

Die Bezeichnung Adventivembryonen gilt hier im weitesten Sinne für Embryonen, die aus vegetativen Zellen entstehen.

Die Untersuchungen wurden mit Unterstützung der Deutschen Forschungsgemeinschaft durchgeführt.  相似文献   

16.
Summary In continuous light or darkness the pupillary diameter of Tenebrio molitor displays a circadian rhythm (Fig. 1b, c).

Gefördert von der Deutschen Forschungsgemeinschaft.  相似文献   

17.
Summary Experiments to raise the frequency of plastid-mutations inAntirrhinum majus have been ineffective when proplastids were X-rayed in egg-cells or were treated in meristems of growing plants by infiltration of three different chemicals.

Mit Unterstützung der Deutschen Forschungsgemeinschaft.  相似文献   

18.
    
Summary The composition of uropygial gland secretions indicates the formerly stated separate position ofAptenodytes forsteri andA. patagonicus from all other recent penguins withSpheniscus located nearest to them.Pygoscelis adeliae cannot be chemically distinguished fromP. papua.

Herrn Professor Dr. Gernot Grimmer zum 60. Geburtstag gewidmet  相似文献   

19.
W. Laux 《BioControl》1964,9(3):293-298
Summary Two types of larvae ofMalacosoma neustria (L.) different in their behaviour as well as in their activity, produce also layers of hemocytes of different thickness after parasitization by the tachinidMericia ampelus wilk. A nuclear polyhedrosis that occurred simultaneously killed both larval types at different speed. The possibility is discussed that the quality of the hemocyte reaction to parasitization depends not only directly on the larval type, but also indirectly through the polyhedrosis.

Durchgeführt mit Unterstützung der Deutschen Forschungsgemeinschaft.

Herrn WOR Dr. J. M.Franz danke ich für wertvolle Anregungen und jederzeitige Unterstützung der Arbeit.  相似文献   

20.
Summary By means of partial illumination with small spots of monochromatic light, polarized obliquely to the cell axis, we could demonstrate that the phytochrome molecules inMougeotia are oriented in a spiral pattern around the cell surface. The lines of this spiral form an angle of about 45o with the cell axis. The degree of exactness of this orientation has been discussed.

Mit 7 Textabbildungen

Herrn Professor Dr.E. Heitz zum 70. Geburtstag.  相似文献   

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