CAVITY RING DOWN SPECTROSCOPY
AS A TOOL FOR MONOCHROMATIC LIGHT ACTION ON TOMATO PLANTS IN
BIO-REGENERATIVE LIFE SUPPORT
SYSTEMS
Cristina
DOBROTA1,2,3, Alexandru MARIAN1, Rahela CARPA1,4,
Cristina Lavinia ROSOIU1, Ferenc L. FORRAY5
1 Faculty of Biology and
Geology, Dept. of Molecular Biology and Biotechnology, Babeș-Bolyai
University, 1 Kogălniceanu St., Cluj-Napoca, Romania
2 Babeş-Bolyai
University, Scientific Research Center of Excellence in Physical Chemistry, Faculty
of Chemistry and Chemical Engineering, 11 Arany Janos St., 400028, Cluj-Napoca,
Romania
3 Academy of Romanian Scientists, 3 Ilfov St., 050044, Bucharest, Romania
4 Institute for
Research-Development-Innovation in Applied Natural Sciences, Babeș-Bolyai
University, 30 Fântânele St., 400294 Cluj-Napoca, Romania
5 Faculty of Biology and
Geology, Dept. of Geology, Babeș-Bolyai University, 1 Kogălniceanu
St., Cluj-Napoca, Romania
ABSTRACT Narrow spectrum LEDs, which
regulate diverse photo-morphogenetic responses of plants, can be used to
achieve desired plant responses in terms of germination, growth rate, and
productivity. Current study examined the effect of blue (465-475 nm), green (515-530
nm), red (620-630 nm), and cool-white light (CCT 6000-6500K) on tomato (Solanum
lycopersicum) different cultivars, with determinate
and indeterminate growth. Our findings show that monochromatic light had a
substantial impact on germination, growth, hydration status, and δ13C
values in plantlets grown under experimental conditions. When compared to the
other wavelengths, red light stimulates the most and visible light inhibits the
most germination in the selected tomato varieties. The lowest elongation was
measured in visible light and the greatest elongation was measured in red
light, resulting in a drop in the PPFD from 326.1 to 179.4 μmol∙m−2∙s−1.
Our findings imply that the δ13C signature in plants detected
by Cavity Ring Down Spectroscopy could be a useful proxy for quickly assessing
the physiological condition of plantlets in their early stages of development
in Bio-Regenerative Life Support Systems.
Keywords: monochromatic light,
Bio-Regenerative Life Support Systems, δ13C, photo
morphogenetic response.
DOI
https://doi.org/10.56082/annalsarscibio.2024.1.53
