Photon-counts during germination of wheat (Triticum aestivum) in wastewater sediment solutions correlated with seedling growth

Gallep, Cristiano M.; Santos, Samuel Ricardo dos

doi:10.15258/sst.2007.35.3.08

Cited by 27 publications

(24 citation statements)

References 12 publications

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“…Whereas this is characteristic of non-stressed samples (Gallep and dos Santos 2007), stressed samples show diminished rhythmicity. Spontaneous circadian rhythms of photon emission were first described for seedlings raise in darkness by Yan (2005), and since this first discovery, more than 9,000 h of biophotonic tests have been performed in our laboratory (LaFA/FT-Unicamp), using wheat seedlings as the test material.…”

Section: Introductionmentioning

confidence: 89%

“…Series 1 is comprised of six 3-day germination tests performed during March 2008 (raw data at Gallep and dos Santos 2007). Series 2 is comprised of 22 2-day tests performed during January and February 2008.…”

Section: Methodsmentioning

confidence: 99%

“…Not only were daily, circadian-type rhythms routinely observed but so also were monthly rhythms. A first publication on these observations appeared in a conference in 2007 and was related to two simultaneous series of germination tests (Gallep and dos Santos 2007).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spontaneous ultra-weak light emissions from wheat seedlings are rhythmic and synchronized with the time profile of the local gravimetric tide

Moraes

Barlow

Klingelé

et al. 2012

Naturwissenschaften

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Semi-circadian rhythms of spontaneous photon emission from wheat seedlings germinated and grown in a constant environment (darkened chamber) were found to be synchronized with the rhythm of the local gravimetric (lunisolar) tidal acceleration. Time courses of the photon-count curves were also found to match the growth velocity profile of the seedlings. Pair-wise analyses of the data--growth, photon count, and tidal--by local tracking correlation always revealed significant coefficients (P > 0.7) for more than 80% of any of the time periods considered. Using fast Fourier transform, the photon-count data revealed periodic components similar to those of the gravimetric tide. Time courses of biophoton emissions would appear to be an additional, useful, and innovative tool in both chronobiological and biophysical studies.

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Section: Introductionmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Spontaneous ultra-weak light emissions from wheat seedlings are rhythmic and synchronized with the time profile of the local gravimetric tide

Moraes

Barlow

Klingelé

et al. 2012

Naturwissenschaften

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show abstract

“…Figure (a) presents the time profile of a sample in 3% solution, whose UPE intensity was 30% stronger than the control group (not shown), although the weak stress promoted by the waste solution did not suppress germination too much (88% against 92% of control group). However, the average sprout development was severely depressed, 66% against 80% of control .…”

Section: Recent Results: Lafa Datamentioning

confidence: 88%

Ultraweak, spontaneous photon emission in seedlings: toxicological and chronobiological applications

Gallep

2014

Luminescence

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The detection of ultraweak light emission in seedlings has been explored in toxicological and chronobiological studies. The main studies in this area are reviewed briefly, including a report on applied tests held in the last 7 years at LaFA--UNICAMP (Brazil). In general, results indicate that a linear relation for total light emission versus germination performance is found if only strong stress situations are considered, when external factors depress a seedling's development, even when considering a sequential series of tests. Light emitted by a single seedling was detected in a compact apparatus, and data are presented here for the first time showing pronounced circadian cycles are evident, with similar time and frequency profiles as those of the local gravimetric tide.

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“…In the last decades the spontaneous ultra-weak photon emission (UPE) phenomena in plants and animals have got attention of research groups around the world, in biology, agriculture and medicine, in areas as seeds viability [1,2,3], water quality [4] and eco-toxicology [5].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous biophoton measurement of control and fluoride stressed seedlings samples

Bertogna

Conforti

Gallep

2013

2013 SBMO/IEEE MTT-S International Microwave &Amp; Optoelectronics Conference (IMOC)

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A series of 10 germinations experiments with duplicated wheat seedlings samples -one imbibed in sodium fluoride (NaF, EC50) and another in water -have their spontaneous, ultra-weak photon emission measured simultaneously for 24-h, at the 4 th day of germination, in two identical measurement systems. The UPE profiles of acute stressed sprouts present initially higher increase but after 6 hours a fast decrease. These variations for the profiles local angular coefficient are so correlated to germination parameters -roots elongation and biomass gain -with clear difference between the stressed and control samples. Variations of such methodology can be developed for quick and reliable analysis of toxicity in germination tests.

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Photon-counts during germination of wheat (Triticum aestivum) in wastewater sediment solutions correlated with seedling growth

Cited by 27 publications

References 12 publications

Spontaneous ultra-weak light emissions from wheat seedlings are rhythmic and synchronized with the time profile of the local gravimetric tide

Spontaneous ultra-weak light emissions from wheat seedlings are rhythmic and synchronized with the time profile of the local gravimetric tide

Ultraweak, spontaneous photon emission in seedlings: toxicological and chronobiological applications

Simultaneous biophoton measurement of control and fluoride stressed seedlings samples

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