EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ 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

Regulation of life cycle in epiphytic brown alga dictyosiphon foeniculaceus


, : Regulation of life cycle in epiphytic brown alga dictyosiphon foeniculaceus. Scientific Papers of the Institute of Algological Research Faculty of Science Hokkaido University 8(1): 31-62

Epiphytic marine brown alga, Dictyosiphon foeniculaceus from Muroran, Hokkaido, was investigated to clarify the entire life cycle, sexual evidence and nuclear phase in laboratory cultures. Dictyosiphon foeniculaceus showed heteromorphic alternation of generations between a macrothallus bearing unilocular sporangia and a microthallus bearing plurilocular sporangia, and the nuclear phases of all stages were haploid (n=8). The sexual process was not observed and the alternation of nuclear phases did not occur. The life cycle of this species was regulated by several environmental factors, especially a chemical substance contained in seawater and the host community. The life cycle of Dictyosiphon foeniculaceus was regulated by using PSIS (plurilocular sporangium inducing substance) and MIS (macrothallus inducing substance) in pure culture, and characterization of PSIS and MIS was attempted. According to the results obtained, the following factors were clarified. The life cycle of D. foeniculaceus was not completed under axenic ASP 12-NTA medium, only vegetative growth of microthalli was observed repeatedly. The PSIS-activity is present in seawater, yeast extract, malt extract and Neorhodomela extract, and it appeared as a strong polarized fraction of Neorhodomela extract. This indicates that PSIS may be a kind of sugar or a related substance. On the other hand, the MIS-activity was discovered in extract of the parasitic yellow bacteria on Scytosiphon thallus and it appeared in a volatile fraction, and this indicates that MIS may be a carbohydrate. By the nutritional study, PSIS is identified with inositol or its chemical analogue and MIS is regarded as an unknown substance. The entire life cycle of Dictyosiphon foeniculaceus was completed in axenic artificial medium containing PSIS and MIS for the first time.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 006288995

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:
Close
Close

Other references

Vogel, Erica P.; Weliky, David P., 2013: Quantitation of Recombinant Protein in Whole Cells and Cell Extracts via Solid-State NMR Spectroscopy. Recombinant proteins (RPs) are commonly expressed in bacteria followed by solubilization and chromatography. Purified RP yield can be diminished by losses at any step with very different changes in methods that can improve the yield. Time and labo...

Krioutchkova, Marina, M.; Onishchenko, Galina, E.; Chentsov, Yurii, S., 1994: An ultrastructural study of the centrosome and centrioles in gametogenesis and early embryogenesis of Lymnaea stagnalis L.: II. Centrosome and centrioles in oogenesis and early embryogenesis. The fine structure of astral poles during both meiotic and early mitotic divisions of Lymnaea stagnalis eggs is studied. It is shown that both meiosis I spindle poles contain single centrioles due, apparently, to uncoupling of the nuclear and cent...

Muthuswamy, R.; Aravamudhan, P., 1958: Dual action seed treatment for sugarcane. Setts of B.O.17 were steeped for 10 minutes in various combined fungicide-insecticide solutions before being planted in March in a soil moderately infested with termites, and the effects on germination, tillering, growth, termite attack and yield...

Kretschmer H., 1983: The reflection of lotkas law in the structure of citations of a journal. A complex structure measure for social groups was applied to the structure of citations in a journal. The citation structure reflected Lotka's law on the various levels of group structure measure. On the 1st structure level the reciprocal eff...

Khan, E., 1982: Inagreius gloriosus gen. n., sp. n. and descriptions of three new species of Xiphinema Cobb, 1913 along with report on X. radicicola T. Goodey, 1936 and X. elongatum Sch. Stek. & Teun, 1938 (Nematodah: Longidoroidea) from India. Indian Journal of Nematology. 1981 ; 112: 189-204

Grandgirard, D.; Gianinazzi, C.; Simon, F.; Tauber, M. G.; Leib, S. L., 2003: In vitro model of brain damage in bacterial meningitis hippocampal dentate gyrus neurons die by apoptosis induced by staurosporine but not by pneumococci. Brain damage is a serious consequence of bacterial meningitis causing neurological sequelae in up to 50% of the surviving patients. Loss of neurons in the dentate gyrus (DG) of the hippocampus occurs by apoptosis, likely triggered by host inflamma...

Michael H. Albert; Xue-Zhong Yu; Thomas Magg, 2008: Ethylenecarbodiimide-coupled allogeneic antigen presenting cells induce human CD4 + regulatory T cells. Clinical Immunology 129(3): 381-393

Denenberg V.H.; Sherman G.F.; Rosen G.D.; Galaburda A.M., 1988: Learning and laterality differences in bxsb mice as a function of neocortical anomaly. Society for Neuroscience Abstracts 14(2): 1260

Anonymous, 2011: Isolation and phylogenetic analysis of pandemic H1N1/9 influenza virus from swine in Jiangsu province of China. To investigate whether the 29 pandemic H1N1 influenza A virus was still being transmitted in swine, a total of 129 nasal swab samples from healthy swine were collected from January to May 21 in Jiangsu province of China. Eight H1N1 influenza virus...

Kushnirenko, E. F.; Kushnirenko, C. M., 1970: Comparison of methods of determining mobile forms of phosphorus and potassium in the profile of typical chernozems and gray podzolized soils. The supply of easily soluble P was best determined by the methods of Machigin, Egner-Riehm, and Burriel-Hernando. Redistribution of P during podzolization was best determined by Chirikov's method and of K by the methods of Maslova, Machigin,...