Coincidence of biophoton emission by wheat seedlings during simultaneous, transcontinental germination tests

Gallep, Cristiano M.; Moraes, Thiago Alexandre; Santos, Samuel Ricardo dos; Barlow, Peter W.

doi:10.1007/s00709-012-0447-x

Cited by 22 publications

(12 citation statements)

References 13 publications

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“…More recently, Peter's interests turned towards the moon and the influence that this satellite may have on biological phenomena on Earth [99]. That conference presentation was followed up by many papers investigating the influence of the moon on such plant phenomena as leaf movements [99][100][101], stem elongation [102], fluctuations in diameters of tree stems [103], root growth [104][105][106], emissions of biophotons by seedlings [107][108][109][110], and chlorophyll fluorescence [111]. Not constrained by gravity, Peter was also developing ideas about extraterrestrial influences and plant bioelectricity [112].…”

Section: Extra-terrestrial Influences On Plant-lifementioning

confidence: 99%

The botanical multiverse of Peter Barlow

Chaffey

Volkmann

Baluška

2019

Communicative & Integrative Biology

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Dr Peter Barlow, who died in 2017, was one of the most respected botanists and biologists of the latter half of the 20th Century. His interests covered a wide range of plant biological topics, e.g. root growth and development, plant cytoskeleton, effects of gravity, plant intelligence, pattern formation, and evolution of eukaryotic cells. Here we consider Peter’s numerous contributions to the: elucidation of plant patterns; understanding of root biology; role of the plant cytoskeleton in growth and development; influence of the Moon on terrestrial vegetation; Cell Body concept; and plant neurobiology. In so doing we attempt not only to provide an overview of Peter’s important work in many areas of plant biology, but also to place that work in the context of recent advances in plant and biological sciences.

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Section: Extra-terrestrial Influences On Plant-lifementioning

confidence: 99%

The botanical multiverse of Peter Barlow

Chaffey

Volkmann

Baluška

2019

Communicative & Integrative Biology

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“…In order to investigate the state of the system via UPE, two approaches can be generally applied: (i) measuring the spontaneous (i.e., non-evoked) UPE changes, or (ii) measuring the UPE changes evoked by a stimulus. Whereas non-evoked UPE changes already show a great variability and complexity (i.e., due to cell cycle-dependent activity, chronobiological state changes or also due to external influences like for example the luni-solar gravitational tide 34 – 36 ), the evoked UPE changes exhibit an even increased complexity. Such changes are mainly due to (i) a stimulus applied to a biosystem, which results in triggering a great variety of different cellular processes in this system (which interact with each other resulting in emergent behaviour), and (ii) the specific stimulus-characteristics will translate non-linearly to the reaction of the system.…”

Section: Introductionmentioning

confidence: 99%

Oscillations of ultra-weak photon emission from cancer and non-cancer cells stressed by culture medium change and TNF-α

Madl

Verwanger

Geppert

et al. 2017

Sci Rep

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Cells spontaneously emit photons in the UV to visible/near-infrared range (ultra-weak photon emission, UPE). Perturbations of the cells' state cause changes in UPE (evoked UPE). The aim of the present study was to analyze the evoked UPE dynamics of cells caused by two types of cell perturbations (stressors):(i) a cell culture medium change, and (ii) application of the pro-inflammatory cytokine tumor necrosis factor alpha (TNF-α). Four types of human cell lines were used (squamous cell carcinoma cells, A431; adenocarcinomic alveolar basal epithelial cells, A549; p53-deficient keratinocytes, HaCaT, and cervical cancer cells, HeLa). In addition to the medium change, TNF-α was applied at different concentrations (5, 10, 20, and 40 ng/mL) and UPE measurements were performed after incubation times of 0, 30, 60, 90 min, 2, 5, 12, 24, 48 h. It was observed that (i) the change of cell culture medium (without added TNF-α) induces a cell type-specific transient increase in UPE with the largest UPE increase observed in A549 cells, (ii) the addition of TNF-α induces a cell type-specific and dose-dependent change in UPE, and (iii) stressed cell cultures in general exhibit oscillatory UPE changes.Cells and tissues spontaneously emit photons in the UV to visible/near-infrared spectral range (approx. 200-1300 nm) even without photoexcitation (for a review see [1][2][3][4] ). This spontaneous ultra-weak photon emission (UPE) with an intensity in the order of 10 1 -10 4 photons/s cm 2 3 is not thermal radiation 1 , but considered to be mainly due to the de-excitation of energetically excited species (atoms, molecules) to a deeper energy level that is accompanied by the emission of photons. The energetic state of a molecule of atom (E total ) is, according to the Born-Oppenheimer approximation, given as E total = E electronic + E vibrational + E rotational + E nuclear , with E electronic the electronic energies (i.e., kinetic energies, electron-nuclear attraction as well as interelectronic and internulear repulsive forces), E vibrational the vibrational energies, and E nuclear the nuclear spin energy. Energy transitions of atoms or molecules are quantized involving the resonant absorption of incident energy and the subsequent quantized emission of it. In case of UPE, the excited energy levels involved refer to transitions regarding changes in E vibrational and E rotational , associated with luminescence in the UV-IR optical spectrum. According to the conventional view, the energetically excited species are formed by oxidation reactions caused by radical or non-radical reactive oxygen (ROS) and nitrogen (RNS) species with lipids, proteins and nucleic acids 1,5 . Especially the UPE in the visible/near-infrared region can be attributed to lipid peroxidation, protein and nucleic acid oxidation. As summarized nicely by Pospíšil et al. 5 the chain reactions leading to UPE can be initiated by the oxidation of biomolecules that yield peroxyl and alkoxyl radicals. These radicals then recombine/cyclize to form dioxetanes or tetraoxides, whic...

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“…This light phenomenon differs from a rather bright bioluminescence which is dependent a specific enzymatic complexes which are present only in very specific species such as fireflies and selected jellyfish. What differentiates the general biological autoluminescence from ordinary bioluminescence is, apart the weaker intensity, its ubiquity across biological species ranging from microorganisms [2][3][4][5] through tissue cultures [6][7][8], plants [9][10][11][12][13] up to animals [14] including human [15][16][17]. There are also various synonyma used in the literature describing this light phenomenon such as ultra-weak photon emission [18], ultra-weak bioluminescence [19], endogenous biological chemiluminescence [20], biophotons [21][22][23], etc.…”

Section: Introductionmentioning

confidence: 99%

Short-time fractal analysis of biological autoluminescence

Dlask

Kukal

Poplová

et al. 2019

Preprint

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Biological systems manifest continuous weak autoluminescence, which is present even in the absence of external stimuli. Since this autoluminescence arises from internal metabolic and physiological processes, several works suggested that it could carry information in the time series of the detected photon counts. However, there is little experimental work which would show any difference of this signal from random Poisson noise and some works were prone to artifacts due to lacking or improper reference signals. Here we apply rigorous statistical methods and advanced reference signals to test the hypothesis whether time series of autoluminescence from germinating mung beans display any intrinsic correlations. Utilizing the fractional Brownian bridge that employs short samples of time-series in the method kernel, we suggest that the detected autoluminescence signal from mung beans is not totally random, but it seems to involve a process with a negative memory. Our results contribute to the development of the rigorous methodology of signal analysis of photonic biosignals.

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Coincidence of biophoton emission by wheat seedlings during simultaneous, transcontinental germination tests

Cited by 22 publications

References 13 publications

The botanical multiverse of Peter Barlow

The botanical multiverse of Peter Barlow

Oscillations of ultra-weak photon emission from cancer and non-cancer cells stressed by culture medium change and TNF-α

Short-time fractal analysis of biological autoluminescence

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