• Chromatic adaptation and photoreversal in blue-green algaCalothrix clavata West

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Chromatic adaptation; phycoerythrin; phycocyanin; Calothrix

    • Abstract


      Complementary chromatic adaptation, a well-established phenomenon in some blue-green algae, has been observed inCalothrix clavata, a heterocystous blue-green alga of the family Rivulariaceae. The chromatic adaptation has been observed for fluorescent and incandescent light by measuring the absorption spectra. The material grown in fluorescent light forms more of phycoerythrin whereas more of phycocyanin tends to be formed in incandescent light. Besides this, photoreversal was observed by transferring the incandescent light grown alga to fluorescent light conditions and vice-versa. Effect of photoreversal and chromatic adaptation has also been discussed for this alga under different monochromatic light conditions. The influence of different light conditions on morphological changes, heterocysts and hormogonia formation has also been investigated. Both chromatic adaptation and photomorphogentic phenolmena in this alga show the involvement of some photoreversible (red:green) pigment.

    • Author Affiliations


      A S Ahluwalia1 R K Rai1 H D Kumar1

      1. Department of Botany, Banaras Hindu University, Varanasi - 221 005
    • Dates

  • Journal of Biosciences | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.