+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The macronuclear anlage does not play an essential role in stomatogenesis in conjugation in paramecium tetraurelia

, : The macronuclear anlage does not play an essential role in stomatogenesis in conjugation in paramecium tetraurelia. Protistologica 21(3): 391-398

The last stages of assembly of the oral apparatus in the conjugation of Paramecium tetraurelia take place shortly after the initiation of differentiation of the new macronuclei (anlagen). The question asked was whether macronuclear anlage differentiation was essential for these last stomatogenic steps. Conjugates were treated before and after pair-separation with colchicine to prevent differentiation of macronuclear anlagen. Oral membranellar differentiation, and the formation of postoral fibres and food vacuoles could be observed in exconjugates lacking macronuclear anlagen. This demonstrates that the differentiation of the macronuclear anlagen was not indispensable in the last steps towards the completion of a functional oral apparatus, though its participation in an accessory capacity was not ruled out.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006712757

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Takahashi, Y.; Iwase, M.; Konishi, M.; Tanaka, M.; Toh-e, A.; Kikuchi, Y., 1999: Smt3, a SUMO-1 homolog, is conjugated to Cdc3, a component of septin rings at the mother-bud neck in budding yeast. SMT3 of Saccharomyces cerevisiae is an essential gene encoding a ubiquitin-like protein similar to mammalian SUMO-1. When a tagged Smt3 or human SUMO-1 was expressed from GAL1 promoter, either gene rescued the lethality of the smt3 disruptant. By...

Horten, B.C.; Montague, S.R., 1976: In vitro characteristics of a sacrococcygeal chordoma maintained in tissue and organ culture systems. Explants of a human sacral chordoma were successfully maintained on collagen-coated coverslips, gelfoam sponge matrices, and Millipore filter platforms for up to 30 days. Tumor cells cultured on collagen-coated coverslips became increasingly vacuo...

Tyminska-Brzosko, R.; Hofman, J.; Chyrek-Borowska, S.; Czapska, D.; Szymanski, W.; Buluk, K., 1978: Kininogenesis and fibrinolysis in guinea pigs during attack of experimental bronchial asthma. Fibrinolysis activity and kininogen, prekallikrein and plasma kininase levels were estimated in 22 guinea pigs during an experimental attack of bronchial asthma. In 9 animals bronchospasm was induced with histamine aerosol, in 13 ovalbumin-preimmu...

Kuratani, S., 2004: Evolution of the vertebrate jaw: comparative embryology and molecular developmental biology reveal the factors behind evolutionary novelty. It is generally believed that the jaw arose through the simple transformation of an ancestral rostral gill arch. The gnathostome jaw differentiates from Hox-free crest cells in the mandibular arch, and this is also apparent in the lamprey. The bas...

Serrano A. A., 1980: Computer uses in engineering geology. Congres International - Association International de Geologie de l'Ingenieur = International Congress - International Association of Engineering Geology 3, Volumen 10): 399-401

An, H.-Jung; Il-Kim, K.; Kim, J.-Young; Shim, J.-Youn; Kang, H.; Kim, T.-Heon; Kim, J.-Kyung; Jeong, J.-Kim; Lee, S.-Young; Kim, S.-Jo, 2007: Microsatellite instability in enclometrioid type endometrial adenocarcinoma is associated with poor prognostic indicators. Microsatellite instability (NISI) has been reported in 25% to 45% of sporadic endometrial carcinoma. The clinicopathologic and molecular characteristics of MSI-high phenotype in colorectal and gastric carcinomas have been widely investigated; how...

Littmann, L.; Wu, G.; Amirana, O.; Tuntelder, J.R.; Thompson, M.; Dezern, K.R.; Kempler, P.; Tatsis, G.P.; Svenson, R.H., 1994: Percutaneous computerized electrical activation mapping of the heart via multipolar electrode catheters in the coronary arteries and veins in dogs. Journal of the American College of Cardiology 0(SPEC ISSUE): 481A

Gazaryan, I.G.; Skripnikov, A.Y..; Verevkin, A.N.; Fechina, V.A., 1993: Peroxidase status of regenerant plants obtained from a superproducing alfalfa cell culture. Doklady Akademii Nauk 331(3): 364-365

Popova, N. K., 1962: Influence of muscular activity on the cholesterol content of the liver. In the rat, performance of muscular work (swimming) for one hour did not produce a statistically reliable change in cholesterol (I) content of the liver, either in animals which were trained (with gradual increase in the work-period from 30 min. t...

David, T., 1985: Nutrition. Intolerant babies. Community Outlook: 22-28