Effect of He-Ne laser radiation on polytene chromosomes of Chironomus

Gregory E. Brill; Oksana R. Apina; Svetlana I. Belyanina; Nadezda P. Panina

doi:10.1117/12.169140

15 February 1994 Effect of He-Ne laser radiation on polytene chromosomes of Chironomus

Gregory E. Brill, Oksana R. Apina, Svetlana I. Belyanina, Nadezda P. Panina

Proceedings Volume 2086, Medical Applications of Lasers; (1994) https://doi.org/10.1117/12.169140
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

Abstract

In this work the influence of He-Ne laser irradiation (wavelength 632.8 nm, power density 1 mW/cm², 15 and 30 min) on giant polytene chromosomes from salivary gland cells of larvae Chironomus plumosus and Chironomus balatonicus was studied. Increase of chromosome compactness depending on the dose, as well as formation of puffs de novo in different loci of different chromosomes, were revealed. The activity of the nucleolar organizer increased only in the case of initially low activity of this zone. Indices of genetic activity of Balbiani ring-7 in chromosome 4 and Balbiani ring-16 in chromosome 1 did not change.

Citation Download Citation

Gregory E. Brill, Oksana R. Apina, Svetlana I. Belyanina, and Nadezda P. Panina "Effect of He-Ne laser radiation on polytene chromosomes of Chironomus", Proc. SPIE 2086, Medical Applications of Lasers, (15 February 1994); https://doi.org/10.1117/12.169140

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