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infrared light-emitting diode radiation causes gravitropic and morphological effects in dark-grown oat seedlingsOat (Avena sativa cv Seger) seedlings were irradiated with IR light-emitting diode (LED) radiation passed through a visible-light-blocking filter. Infrared LED irradiated seedlings exhibited differences in growth and gravitropic response when compared to seedlings grown in darkness at the same temperature. Thus, the oat seedlings in this study were able to detect IR LED radiation. These findings call into question the use of IR LED as a safe-light for some photosensitive plant response experiments. These findings also expand the defined range of wavelengths involved in radiation-gravity (light-gravity) interactions to include wavelengths in the IR region of the spectrum.
Document ID
20040112212
Document Type
Reprint (Version printed in journal)
Authors
Johnson, C. F.
(NASA Kennedy Space Center Cocoa Beach FL United States)
Brown, C. S.
Wheeler, R. M.
Sager, J. C.
Chapman, D. K.
Deitzer, G. F.
Date Acquired
August 21, 2013
Publication Date
February 1, 1996
Publication Information
Publication: Photochemistry and photobiology
Volume: 63
Issue: 2
ISSN: 0031-8655
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAS10-11624
CONTRACT_GRANT: NAS10-12180
CONTRACT_GRANT: NAG2-574
Distribution Limits
Public
Copyright
Other
Keywords
NASA Center KSC
NASA Discipline Life Support Systems
NASA Discipline Plant Biology