Cut-off filter method for light-induced photon emission spectra estimation

Tryka, Stanislaw

doi:10.1016/s0097-8485(97)00021-1

Cited by 11 publications

(10 citation statements)

References 22 publications

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“…PMT was cooled down to 265 K. The impulses from the photomultiplier were shaped by amplifier and then counted and registered by a computer. The system serves as an automatic filter spectrometer with a set of glass filters (long pass filter) SCHOTT type DIN 58191, the socalled cut-off filters enabling the measurement of the UWL spectral distribution (Inaba, 1988;Tryka, 1998). With the increasing wavelength the quantum efficiency of photocathode decreases and the filter transmittance curves deteriorate.…”

Section: Methodsmentioning

confidence: 99%

Ultraweak luminescence of the Characeae plants under the circumstances of cyclical changes in temperature

Borc¹,

Dudziak²,

Jaśkowska³

2011

Current Topics in Biophysics

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The study sought to measure ultraweak chemiluminescence (UWL) of Nitellopsis Obtusa plants with regards to temperature changes within the range from 4 o C to 38 o C. The temperature changes were being executed in reversible cycles. The variations of UWL intensity with temperature had an exponential character. In case when temperature was changed rapidly by 5 o C every 20 min or fluently with rate of 0.17 o C/min we observed a temperature hysteresis loop in the first cycles and the loop character disappeared in the second cycles. When the temperature was being changed fluently but faster (1. o C/min) after cycles (about 2 hours) the curves no longer manifested the loop character. This phenomenon can point that the plants adapted themselves to the temperature changes.We also observed a stimulation of UWL made in successful cycles. Our spectral experiments showed that the UWL may consist mainly of emission of the singlet oxygen sigma (762 nm) and induced emission of chlorophyll.

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Section: Methodsmentioning

confidence: 99%

Ultraweak luminescence of the Characeae plants under the circumstances of cyclical changes in temperature

Borc¹,

Dudziak²,

Jaśkowska³

2011

Current Topics in Biophysics

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“…The recorded spectral data were corrected using the quantum efficiency for the wavelength dependence of R2257P as well as the transmittance of the glass filters. 8,9) 3. Results and Discussion Figures 2 and 3 show the temporal changes in BI for miteinfested and artificially wounded leaves.…”

Section: Spectral Analysis Of Biophoton Emissionmentioning

confidence: 99%

Spectral Analysis of Ultraweak Chemiluminescence from Kidney Bean Leaf Infested with Tetranychus Kanzawai Kishida

Kawabata

Miike

Okabe

et al. 2005

Jpn. J. Appl. Phys.

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We performed the spectral analysis of ultraweak-photon emissions from kidney bean leaves infested by the kanzawa spider mite, Tetranychus kanzawai Kishida (Acari: Tetranychidae). We also measured the spectrum of photon emissions from artificially wounded leaves, and compared the result with spectral data obtained from the mite-infested leaves. Photon emissions from both the mite-infested and wounded leaves primarily consisted of wavelengths ranging from 500 to 700 nm, and photon intensity at these wavelengths increased steadily after perturbation. In contrast, photon intensity of the miteinfested leaves at 300-400 nm exhibited only differential changes; it began increasing at 20 h, and showed two peaks at 72 and 120 h. We previously reported that photon emissions from infested leaves might be the result of both insect damage and plant self-protection. Plant defensive responses, such as herbivore-induced plant volatiles (HIPV), are induced by insect elicitors via insect damage. Therefore, photon intensity at 500-700 nm might be related to direct injury (physiological stress), while photon intensity at 300-400 nm may signify a physiological (biochemical)-action-related defensive response.

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“…(Received 16 May 2003) 2004 7 6 (Accepted 6 July 2004) DOI: 10.1303/jjaez.2004.289 Boveris et al, 1980Abeles, 1986Radotic et al, 1998Iyozumi et al, 2002 1. Inaba, 1988;Tryka, 1998 PK264B2-36:…”

Section: 16mentioning

confidence: 99%

“…600ϳ700 nm 13a-13- Hildebrand et al, 1986;1998550 nm Abeles, 1986Koiwa et al, 1997Koch et al, 1999PI Koiwa et al, 19971999HIPV 2002 500ϳ700 nm Koch et al, 1999;Ozawa et al, 2000…”

Section: 16unclassified

Biophoton Measurement of Herbivore-Induced Plant Responses.

Kawabata¹,

Miike²,

Uefune³

et al. 2004

Jpn. J. Appl. Entomol. Zool.

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We studied spontaneous photon emission from kidney bean leaves infested with kanzawa spider mites, Tetranychus kanzawai Kishida (Acari: Tetranychidae). Strong photon radiation was observed from veins strongly infested with spider mites. Temporal changes in the total photon intensity can be described by two different logistic curves: the one was thought to be due to injury caused by the mites and the other due to induced responses. Photon intensity of the wavelength ranging from 500 to 700 nm increased monotonously soon after spider mites attacked. Photon intensity from 300 to 400 nm began to increase about 20 h after infestation and showed two peaks at about 72 and 120 h. The former phenomena may be the result of direct injury (physical stresses) and the latter to physiological (biochemical) actions related to defensive responses. These results suggest that photon measurement is a powerful tool for evaluating plant responses to herbivory.

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Cut-off filter method for light-induced photon emission spectra estimation

Cited by 11 publications

References 22 publications

Ultraweak luminescence of the Characeae plants under the circumstances of cyclical changes in temperature

Ultraweak luminescence of the Characeae plants under the circumstances of cyclical changes in temperature

Spectral Analysis of Ultraweak Chemiluminescence from Kidney Bean Leaf Infested with Tetranychus Kanzawai Kishida

Biophoton Measurement of Herbivore-Induced Plant Responses.

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