“School of Nano-Sciences”
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| Paper IPM / Nano-Sciences / 14440 |
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Ultra-weak photon emission (UPE) is an endogenous bioluminescence phenomenon present in all biological
samples with an active oxidative metabolism, even without an external pre-illumination. To verify the potential
of UPE for non-invasive monitoring of metabolismand growth in germinating plants, the aimof this study was to
investigate the UPE from a model system - germinating mung bean seedlings (Vigna radiata) - and analyze the
statistical properties of UPE during the growth in two different conditions of imbibition (pure water and 1negative binomial distribution whose parameters changed during the growth due to the increasing ratio of
signal-to-detector dark count. Correspondingly for both groups, the mean values of UPE increased during the
seedlings growth, while the values of Fano factor show a decreasing trend towards 1 during the 6 day period.
While our results do not show any significant difference in hypocotyl length and weight gain between the two
groups of mung seedlings, there is an indication of a tiny suppressing effect of sucrose on UPE intensity. We believe
that UPE can be exploited for a sensitive non-invasive analysis of oxidative metabolism during the plant development and growth with potential applications in agricultural research,
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