Skip to main content
SpringerLink
Log in

Studies onCyclotella meneghiniana kütz. IV. Progressive diminution in cell size

  • Published:
Proceedings / Indian Academy of Sciences

Abstract

Cyclotella meneghiniana, when grown under different salinity regimes, shows varying rates of size reduction which is directly proportional to the salinity of the medium and is always greater for large than for small cells. The differential flexibility of the girdle band is responsible for differences in size reduction. Cells of dia 7·5–3·0μ are elongated on the pervalvar axis. The elongation is maximum in Reimann medium and decreased with increasing salinities and is brought about by the formation of new intercalary bandsC. meneghiniana maintains an internal osmotic pressure in excess of the surrounding medium and this ability helps in its survival in an environment of fluctuating salinities.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Badour S S 1968 Experimental separation of cell division and silica shell formation inCyclotella cryptica;Arch. Mikrobiol. 62 17–33

    Article  Google Scholar 

  • Braarud T 1944 Experimental studies on marine plankton diatoms;K. Nor. Vidensk. Selsk. Skr. 10 1–16

    Google Scholar 

  • Denffer D V 1949 Die planktische Massenkultur pennater Grund-Diatomeen;Arch. Mikrobiol. 14 159–202

    Article  Google Scholar 

  • Desikachary T V and Rao V N R 1972 Salinity and diatoms;J. Mar. Biol. Ass. India 14 524–538

    Google Scholar 

  • Desikachary T V and Rao V N R 1973 Studies onCyclotella meneghiniana Kütz. III. The frustule;Proc. Indian Acad. Sci. B77 78–91

    Google Scholar 

  • Geitler L 1932 Der Formwechsel der pennaten Diatomeen;Arch. Protistenk. 78 1–226

    Google Scholar 

  • Gross F 1937–38 Life-history of some marine plankton diatoms:Phil. Trans. R. Soc. 228 1–48

    Article  Google Scholar 

  • Hofler K 1965 Physiologische Eigenart mariner Planktondiatomeen;Ber. dt. Bot. Ges. 78 13–18

    Google Scholar 

  • Jorgensen E G 1964 Chlorophyll content and rate of photosynthesis in relation to cell size of the diatomCyclotella meneghiniana:Physiol. Plantol. 17 407–413

    Article  Google Scholar 

  • Locker F 1950 Beiträge zur Kenntnis des Formwechsels der Diatomeen an Hand von Kulturversuchen;Öst. Bot. Z. 97 322–332

    Article  Google Scholar 

  • Miquel P 1892–93 Recherches experimentales sur la physiologie, la morphologie et la pathologie des Diatomées;Ann. d. Microgr. 4 529–558

    Google Scholar 

  • Rao V N R 1971 Studies onCyclotella meneghiniana Kütz. II. Induction of Auxospore formation;Phykos 10 84–98

    Google Scholar 

  • Rao V N R 1974 Size reduction accompanying cell division in diatoms inSymp. Phycology—Taxonomy of Algae. Centre for Advanded Study in Botany, University of Madras (in press).

  • Rao V N R and Desikachary T V 1970 Macdonald-Pfitzer hypothesis and cell size in diatoms;Beih. Nova Hedwigia 31 485–493

    Google Scholar 

  • Reimann B E F, Lewin J C and Guillard R R L 1963Cyclotella cryptica, a new brackish water diatom species;Phycologia 3 75–84

    Google Scholar 

  • Stosch H A V and Drebes G 1964. Entwicklungsgeschichtliche Untersuchungen an zentricshen Diatomeen IV. Die Plankton DiatomeeStephanopyxis turris, ihre Behandlung und Entwick lunsgeschichte;Helgol. Wiss. Meeresunters.11 209–257

    Article  Google Scholar 

  • Williams R B 1964 Division rates of marsh diatoms in relation to salinity and cell size;Ecology 45 877–880

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. University Botany Laboratory, Madras 600 005, Chepauk

    V N R Rao

Authors
  1. V N R Rao
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Memoir No. 241 from the Centre of Advanced Study in Botany.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rao, V.N.R. Studies onCyclotella meneghiniana kütz. IV. Progressive diminution in cell size. Proc. Indian Acad. Sci. 87, 1–15 (1978). https://doi.org/10.1007/BF03046865

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03046865

Keywords

Search

Navigation