Ultraweak photon emission in germinating seeds: A signal of biological order

Bajpai, R. P.; Bajpai, P. K.; Roy, Debjani

doi:10.1002/bio.1170060403

Cited by 14 publications

(11 citation statements)

References 3 publications

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“…Nandi et al (13) found a significant decrease in stable free radical accumulation in rice seeds during ageing under natural conditions, using an electron paramagnetic resonance response (EPR) technique. In fact, it is remarkable that there have had so many positive correlations at all between EPR responses, lipid analyses and viability (14). Working on various kinds of fresh and aged seeds (barley, wheat, tomato, onion and pepper), Conger and Randolph (15) also suggested that the endogenous free radical concentration in fresh, dry seeds might decay with age, causing cell damage through a series of radical-molecule reactions as it decays.…”

Section: Discussionmentioning

confidence: 99%

Rapid determination of rice seed vigour by spontaneous chemiluminescence and singlet oxygen generation during early imbibition

et al. 2002

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Using a highly sensitive single photon counter, a spontaneous chemiluminescence (CL) study on rice (Oryza sativa L.) seeds stored in different years was carried out. We first observed that the degree of ageing in rice seeds was related to the intensity of spontaneous CL during early imbibition (0-30 min). Rice seeds stored for a shorter time had a stronger intensity of CL in early imbibition. The germination rate of rice seeds showed an obvious positive correlation with the intensity of spontaneous CL. Singlet oxygen ((1)O(2)) in rice seeds during early imbibition was investigated by a CL method using a cypridina luciferin analogue, 2-methyl-6-(p-methoxyphenyl)-3,7-dihydroimidazo [1,2alpha] pyrazin-3-one (MCLA), as a selective CL probe. Additional experimental evidence for the formation of (1)O(2) came from the quenching effect of sodium azide (NaN(3)) on MCLA-mediated rice seeds' CL. Analysis based on the experimental results demonstrated that spontaneous CL in rice seeds during early imbibition was mainly contributed by singlet oxygen ((1)O(2)).

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Section: Discussionmentioning

confidence: 99%

Rapid determination of rice seed vigour by spontaneous chemiluminescence and singlet oxygen generation during early imbibition

et al. 2002

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“…While it is impossible to do full justice here to the many possible models for bioelectromagnetic mechanisms, a few directions [see Wood, 1993;Engstrom and Fitzsimmons, 1999] should be noted since they are valuable starting points for interpreting known effects and formulating future studies. At the level of the , 1955;van Wijk and Schamhart, 1988 information Radiation correlates with cell cycle stage Quickenden and Hee, 1974;Quickenden and Hee, 1976;Popp, 1991, 1995;Grasso et al, 1991 Radiation correlates with cell division rates and morphogenetic events Perelygin and Tarusov, 1966;Chwirot, 1986;Dygdala, 1986, 1991;Bajpai et al, 1991 Radiation can induce changes in chemically-isolated systems Galle et al, 1991, Galle, 1992Schauf et al, 1992 Cells emit specific ELF EM waves Waves correlate with growth events Pohl and Hawk, 1966;Pohl, 1981Pohl, , 1984 Cells emit millimeter EM waves Models based on long-range coherence via these fields have been proposed Pohl, 1980;Cooper, 1981;Fröhlich and Kremer, 1983;Fröhlich, 1988 Cells also communicate in the Cells emit IR pulses Albrecht-Buehler, 1992b infra-read (IR) range Cells detect IR (probably through centrioles) Albrecht-Buehler, 1979, 1992a Cells use IR signals for migration cues Albrecht-Buehler, 1991 biophysics of electromagnetic field interactions with molecular systems, electric fields exert forces on ions, while magnetic fields exert forces on magnetic particles and on moving ions. Barnes [1992] presents an overview of mechanisms, along with possible theories as to how fields whose energies are very weak relative to ambient thermal energy can be detected by biosystems.…”

Section: Mechanismsmentioning

confidence: 99%

Bioelectromagnetics in morphogenesis

Levin¹

2003

Bioelectromagnetics

125

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Understanding the factors that allow biological systems to reliably self-assemble consistent, highly complex, four dimensional patterns on many scales is crucial for the biomedicine of cancer, regeneration, and birth defects. The role of chemical signaling factors in controlling embryonic morphogenesis has been a central focus in modern developmental biology. While the role of tensile forces is also beginning to be appreciated, another major aspect of physics remains largely neglected by molecular embryology: electromagnetic fields and radiations. The continued progress of molecular approaches to understanding biological form and function in the post genome era now requires the merging of genetics with functional understanding of biophysics and physiology in vivo. The literature contains much data hinting at an important role for bioelectromagnetic phenomena as a mediator of morphogenetic information in many contexts relevant to embryonic development. This review attempts to highlight briefly some of the most promising (and often underappreciated) findings that are of high relevance for understanding the biophysical factors mediating morphogenetic signals in biological systems. These data originate from contexts including embryonic development, neoplasm, and regeneration.

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“…Most experimental reports registered induced PE after the removal of stress so the induced PE first elevated from and then reduced to the baseline level of spontaneous UPE Induced PE revealing single-exponential decay patterns with long time constants was not uncommon to plants exposed to non-photic stresses [20][21][22][23]. Induced PE showing double-exponential decay patterns are also appreciable from organisms exposed to photic [24], mechanical [12,21,25,26], chemical [16,[27][28][29][30][31][32][33], and radioactive [13] stresses. Besides the various decay patterns of induced PE, the total duration of induced PE varies over a large range after the stress-removal.…”

Section: Introductionmentioning

confidence: 99%

On the stress-induced photon emission from organism: II, how will the stress-transfer kinetics affect the photo-genesis?

Piao

2020

SN Appl. Sci.

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Much remains to be identified for the temporal course of stress-induced photon emission (PE) following stress of various types including but not limited to light. Induced PE often decays hyperbolically; yet, it is not uncommon for induced PE to manifest decay patterns that are various combinations of first-order responses. Induced PE also presented transient patterns characteristic of second-order responses. A soliton-based photon-storage model addressed the hyperbolic decay pattern of induced PE; however, there are questions regarding non-hyperbolic decay as well as the large range of delayand-decay scales of induced PE. This work offers an alternative interpretation of the temporal course of induced PE when stressed upon an organism. It is proposed that the surface photon emission of induced PE due to a stress involves two causally sequential phases: a stress-transfer phase that transforms the stress to photo-genesis, and a photon-propagation phase that transmits the photons from the site of photo-genesis to surface emission. Part I has argued that a retarded or slow stress-transfer phase is necessary to explain induced PE occurring/lasting at a timescale several orders of magnitude later/longer than the photon propagation delay due to tissue scattering after stress-removal. Part II models the kinetics of the stress-transfer phase that sources the photo-genesis with a linear-system approach. The analysis illustrates how a single stress-transfer pathway may manifest various photo-genesis patterns in responding to the same stressinput, and why a single kinetic pattern of photo-genesis may arise from multiple paths of stress transfer. The theoretical insights may help devise stress-control strategies to enhance the yield of induced PE for more mechanistic discoveries and potentiating broader applications.

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Ultraweak photon emission in germinating seeds: A signal of biological order

Cited by 14 publications

References 3 publications

Rapid determination of rice seed vigour by spontaneous chemiluminescence and singlet oxygen generation during early imbibition

Rapid determination of rice seed vigour by spontaneous chemiluminescence and singlet oxygen generation during early imbibition

Bioelectromagnetics in morphogenesis

On the stress-induced photon emission from organism: II, how will the stress-transfer kinetics affect the photo-genesis?

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