Cell response to quasi-monochromatic light with different coherence

• Published in: Quantum electronics (Woodbury, N.Y.) N.Y.), 2015-01, Vol.45 (4), p.351-357
• Main Authors: Budagovsky, A.V., Solovykh, N.V., Budagovskaya, O.N., Budagovsky, I.A.
• Format: Article
• Language: English
• Subjects: 60 APPLIED LIFE SCIENCES; Assessments; Biological; BIOLOGICAL FUNCTIONS; BIOLOGICAL MODELS; BIOLOGICAL RADIATION EFFECTS; cell size; Coherence; COHERENCE LENGTH; coherence volume; Correlation; CORRELATION FUNCTIONS; Germination; IN VITRO; laser ligth; Mathematical models; MONOCHROMATIC RADIATION; MORPHOLOGY; photocontrol processes; plants; Pollen; quasi-monochromatic light; Radishes; VISIBLE RADIATION
• ISSN: 1063-7818; 1468-4799
• DOI: 10.1070/QE2015v045n04ABEH015594

The problem of the light coherence effect on the magnitude of the photoinduced cell response is discussed. The origins of ambiguous interpretation of the known experimental results are considered. Using the biological models, essentially differing in anatomy, morphology and biological functions (acrospires of radish, blackberry microsprouts cultivated in vitro, plum pollen), the effect of statistical properties of quasi-monochromatic light on the magnitude of the photoinduced cell response is shown. It is found that for relatively low spatial coherence, the cell functional activity changes insignificantly. The maximal enhancement of growing processes (stimulating effect) is observed when the coherence length and the correlation radius are greater than the cell size, i.e., the entire cell fits into the field coherence volume. In this case, the representative indicators (germination of seeds and pollen, the spears length) exceeds those of non-irradiated objects by . For more correct assessment of the effect of light statistical properties on photocontrol processes, it is proposed to replace the qualitative description (coherent - incoherent) with the quantitative one, using the determination of spatial and temporal correlation functions and comparing them with the characteristic dimensions of the biological structures, e.g., the cell size.